Banerji, Manda, Ferreras, Ignacio, Abdalla, Filipe B., Hewett, Paul, Lahav, Ofer
We present an analysis of the evolution of 8625 Luminous Red Galaxies between z = 0.4 and z = 0.8 in the 2dF and SDSS LRG and QSO (2SLAQ) survey. The LRGs are split into redshift bins and the...
GAMA: towards a physical understanding of galaxy formation (2009)
Driver, Simon P., Norberg, Peder, Baldry, Ivan K., Bamford, Steven P., Hopkins, Andrew M., Liske, Jochen, ...
The Galaxy And Mass Assembly (GAMA) project is the latest in a tradition of large galaxy redshift surveys, and is now underway on the 3.9m Anglo-Australian Telescope at Siding Spring Observatory....
Lahav, Ofer, Kiakotou, Angeliki, Abdalla, Filipe B., Blake, Chris
We study the prospects for detecting neutrino masses from the galaxy angular power spectrum in photometric redshift shells of the Dark Energy Survey (DES) over a volume of 20 (Gpc/h)^3 combined with...
The 6dF Galaxy Survey: final redshift release (DR3) and southern large-scale structures (2009)
Jones, D. Heath, Read, Mike A., Saunders, Will, Colless, Matthew, Jarrett, Tom, Parker, Quentin A., ...
We report the final redshift release of the 6dF Galaxy Survey (6dFGS), a combined redshift and peculiar velocity survey over the southern sky (|b| > 10°). Its 136 304 spectra have yielded 110 256...
Galaxy Zoo: Reproducing Galaxy Morphologies Via Machine Learning (2009)
Banerji, Manda, Lahav, Ofer, Lintott, Chris J., Abdalla, Filipe B., Schawinski, Kevin, Andreescu, Dan, ...
We present morphological classifications obtained using machine learning for objects in SDSS DR7 that have been classified by Galaxy Zoo into three classes namely spirals, ellipticals and...
EXOFIT: Bayesian Estimation of Orbital Parameters of Extrasolar Planets (2009)
Balan, Sreekumar T., Lahav, Ofer
We introduce EXOFIT, a Bayesian tool for estimating orbital parameters of extrasolar planets from radial velocity measurements. EXOFIT can search for either one or two planets at present. EXOFIT...
We predict the acceleration of the Local Group generated by the 2MASS Redshift Survey within the framework of LambdaCDM and the halo model of galaxies. We show that as the galaxy fluctuations derived...
The 6dF Galaxy Survey: Final Redshift Release (DR3) and Southern Large-Scale Structures (2009)
Jones, D. Heath, Read, Mike A., Saunders, Will, Colless, Matthew, Jarrett, Tom, Parker, Quentin, ...
We report the final redshift release of the 6dF Galaxy Survey, a combined redshift and peculiar velocity survey over the southern sky (|b|>10 deg). Its 136,304 spectra have yielded 110,256 new...
A Comparison of Six Photometric Redshift Methods Applied to 1.5 Million Luminous Red Galaxies (2008)
Abdalla, Filipe B., Banerji, Manda, Lahav, Ofer, Rashkov, Valery
We present an updated version of MegaZ-LRG (Collister et al.,(2007)) with photometric redshifts derived with the neural network method, ANNz as well as five other publicly available photo-z codes...
The cluster-galaxy cross-spectrum: an additional probe of cosmological and halo parameters (2008)
There are several wide field galaxy and cluster surveys planned for the nearest future, e.g. BOSS, WFMOS, ADEPT, Hetdex, SPT, eROSITA. In the simplest approach one would analyze these independently,...
ExoFit: Orbital Parameters of Extra-solar Planets from Radial Velocities (2008)
Balan, Sreekumar T., Lahav, Ofer
Retrieval of orbital parameters of extrasolar planets poses considerable statistical challenges.Due to sparse sampling, measurement errors, parameters degeneracy and modelling limitations, there are...
The Three Faces of Omega_m: Testing Gravity with Low and High Redshift SN Ia Surveys (2008)
Peculiar velocities of galaxies hosting Type Ia supernovae generate a significant systematic effect in deriving the dark energy equation of state w, at level of a few percent. Here we illustrate how...
Galaxy and Mass Assembly (GAMA) (2008)
Driver, Simon P., Baldry, Ivan K., Bamford, S., Bland-Hawthorn, Joss, Bridges, Terry J., Cameron, Ewan, ...
The GAMA survey aims to deliver 250,000 optical spectra (3--7Ang resolution) over 250 sq. degrees to spectroscopic limits of r_{AB}
Galaxy and Mass Assembly (GAMA) (2008)
Driver, Simon P., Baldry, Ivan K., Bamford, S., Bland-Hawthorn, Joss, Bridges, Terry J., Cameron, Ewan, ...
The GAMA survey aims to deliver 250,000 optical spectra (3--7Ang resolution) over 250 sq. degrees to spectroscopic limits of r_{AB}
Blake, Chris, Collister, Adrian, Lahav, Ofer
We analyse the small-scale clustering in 'MegaZ-LRG', a large photometric redshift catalogue of luminous red galaxies extracted from the imaging data set of the Sloan Digital Sky Survey. MegaZ-LRG,...
Galaxy and Mass Assembly (GAMA) (2008)
Driver, Simon P., Baldry, Ivan K., Bamford, S., Bland-Hawthorn, Joss, Bridges, Terry J., Cameron, Ewan, ...
The GAMA survey aims to deliver 250,000 optical spectra (3--7Ang resolution) over 250 sq. degrees to spectroscopic limits of r_{AB}
Blake, Chris, Collister, Adrian, Lahav, Ofer
We analyse the small-scale clustering in 'MegaZ-LRG', a large photometric redshift catalogue of luminous red galaxies extracted from the imaging data set of the Sloan Digital Sky Survey. MegaZ-LRG,...
Dark Energy: back to Newton? (2007)
Dark Energy is currently one of the biggest mysteries in science. In this article the origin of the concept is traced as far back as Newton and Hooke in the seventeenth century. Newton considered,...
Bas'ilio X. Santiago, 2 (2007)
Sune Hermit, Ofer Lahav, Michael A. Strauss, Alan Dressler, John P. Huchra
T E X style file v1.4) The two-point correlation function and morphological
Jonathan E. Baker, Marc Davis, Michael A. Strauss, Ofer Lahav
We have used the Optical Redshift Survey (ORS; Santiago et al. 1995) to construct the gravity field due to fluctuations in the galaxy density field out to distances of 8000 km s \Gamma1. At large...
Sune Hermit, Basílio X. Santiago, Ofer Lahav, Michael A. Strauss, Alan Dressler, John P. Huchra
We study the clustering of galaxies in real and redshift space using the Optical Redshift Survey (ORS). We estimate the two point correlation function in redshift space, ¸(s), for several subsamples...
Basílio X. Santiago, Bas'ilio X. Santiago, Michael A. Strauss, Ofer Lahav, Marc Davis, Alan Dressler, ...
We quantify the effects of Galactic extinction on the derived luminosity and diameter functions and on the density field of a redshift sample. Galaxy magnitudes are more affected by extinction than...
The Velocity Field Predicted By The Optical Redshift Survey (2007)
Jonathan Baker, Marc Davis, Michael A. Strauss, Ofer Lahav
We have used the Optical Redshift Survey (ORS; Santiago et al. 1995) to construct the gravity field due to fluctuations in the galaxy density field out to distances of 8000 km s \Gamma1 . At large...
Objective Classication of Galaxy Spectra using the Information Bottleneck Method (2007)
Noam Slonim, Rachel Somerville, Naftali Tishby, Ofer Lahav
A new method for classication of galaxy spectra is presented, based on a recently introduced information theoretical principle, the information bottleneck. For any desired number of classes, galaxies...
WIENER RECONSTRUCTION OF THE IRAS 1.2Jy GALAXY REDSHIFT SURVEY: COSMOGRAPHICAL IMPLICATIONS (2007)
Matthew Webster, Ofer Lahav, Karl Fisher
We utilise the method of Wiener reconstruction with spherical harmonics and Bessel functions to recover the density and velocity fields from the IRAS 1.2Jy redshift survey. The reconstruction relies...
Banerji, Manda, Abdalla, Filipe B., Lahav, Ofer, Lin, Huan
We conduct a detailed analysis of the photometric redshift requirements for the proposed Dark Energy Survey (DES) using two sets of mock galaxy simulations and an artificial neural network code -...
Host, Ole, Lahav, Ofer, Abdalla, Filipe B., Eitel, Klaus
We present a showcase for deriving bounds on the neutrino masses from laboratory experiments and cosmological observations. We compare the frequentist and Bayesian bounds on the effective electron...
Neutrino Mass, Dark Energy, and the Linear Growth Factor (2007)
Kiakotou, Angeliki, Elgaroy, Oystein, Lahav, Ofer
We study the degeneracies between neutrino mass and dark energy as they manifest themselves in cosmological observations. In contradiction to a popular formula in the literature, the suppression of...
Rogers, Ben, Ferreras, Ignacio, Lahav, Ofer, Bernardi, Mariangela, Kaviraj, Sugata, Yi, Sukyoung K.
(Abridged) We apply Principal Component Analysis (PCA) to a sample of early-type galaxies from the Sloan Digital Sky Survey (SDSS) in order to infer differences in their star formation histories. Out...
The Future of the Local Large Scale Structure: the roles of Dark Matter and Dark Energy (2007)
Hoffman, Yehuda, Lahav, Ofer, Yepes, Gustavo, Dover, Yaniv
We study the distinct effects of Dark Matter and Dark Energy on the future evolution of nearby large scale structures using constrained N-body simulations. We contrast a model of Cold Dark Matter and...
Halo-model signatures from 380,000 SDSS Luminous Red Galaxies with photometric redshifts (2007)
Blake, Chris, Collister, Adrian, Lahav, Ofer
We analyze the small-scale clustering in "MegaZ-LRG", a large photometric-redshift catalogue of Luminous Red Galaxies extracted from the imaging dataset of the Sloan Digital Sky Survey. MegaZ-LRG,...
Blake, Christopher A., Collister, Adrian A., Bridle, Sarah, Lahav, Ofer
We analyse MegaZ-LRG, a photometric-redshift catalogue of luminous red galaxies (LRGs) based on the imaging data of the Sloan Digital Sky Survey (SDSS) 4th Data Release. MegaZ-LRG, presented in a...
MegaZ-LRG : a photometric redshift catalogue of one million SDSS luminous red galaxies (2007)
Collister, Adrian A., Lahav, Ofer, Blake, Christopher A., Cannon, Russell D., Croom, Scott M., Drinkwater, Michael J., ...
We describe the construction of MegaZ-LRG, a photometric redshift catalogue of over one million luminous red galaxies (LRGs) in the redshift range 0.4 < z < 0.7 with limiting magnitude i < 20. The...
MegaZ-LRG: a photometric redshift catalogue of one million SDSS luminous red galaxies (2007)
Collister, Adrian, Lahav, Ofer, Blake, Chris, Cannon, Russell D., Croom, Scott M., Drinkwater, Michael J., ...
We describe the construction of MegaZ-LRG, a photometric redshift catalogue of over one million luminous red galaxies (LRGs) in the redshift range 0.4 < z < 0.7 with limiting magnitude i < 20. The...
Blake, Chris, Collister, Adrian, Bridle, Sarah, Lahav, Ofer
We analyse MegaZ-LRG, a photometric-redshift catalogue of luminous red galaxies (LRGs) based on the imaging data of the Sloan Digital Sky Survey (SDSS) 4th Data Release. MegaZ-LRG, presented in a...
MegaZ-LRG : a photometric redshift catalogue of one million SDSS luminous red galaxies (2007)
Collister, Adrian A., Lahav, Ofer, Blake, Christopher A., Cannon, Russell D., Croom, Scott M., Drinkwater, Michael J., ...
We describe the construction of MegaZ-LRG, a photometric redshift catalogue of over one million luminous red galaxies (LRGs) in the redshift range 0.4 < z < 0.7 with limiting magnitude i < 20. The...
Blake, Christopher A., Collister, Adrian A., Bridle, Sarah, Lahav, Ofer
We analyse MegaZ-LRG, a photometric-redshift catalogue of luminous red galaxies (LRGs) based on the imaging data of the Sloan Digital Sky Survey (SDSS) 4th Data Release. MegaZ-LRG, presented in a...
Blake, Christopher A., Collister, Adrian A., Bridle, Sarah, Lahav, Ofer
We analyse MegaZ-LRG, a photometric-redshift catalogue of luminous red galaxies (LRGs) based on the imaging data of the Sloan Digital Sky Survey (SDSS) 4th Data Release. MegaZ-LRG, presented in a...
MegaZ-LRG : a photometric redshift catalogue of one million SDSS luminous red galaxies (2007)
Collister, Adrian A., Lahav, Ofer, Blake, Christopher A., Cannon, Russell D., Croom, Scott M., Drinkwater, Michael J., ...
We describe the construction of MegaZ-LRG, a photometric redshift catalogue of over one million luminous red galaxies (LRGs) in the redshift range 0.4 < z < 0.7 with limiting magnitude i < 20. The...
Blake, Chris, Collister, Adrian, Bridle, Sarah, Lahav, Ofer
We analyse MegaZ-LRG, a photometric-redshift catalogue of luminous red galaxies (LRGs) based on the imaging data of the Sloan Digital Sky Survey (SDSS) 4th Data Release. MegaZ-LRG, presented in a...
MegaZ-LRG: a photometric redshift catalogue of one million SDSS luminous red galaxies (2007)
Collister, Adrian, Lahav, Ofer, Blake, Chris, Cannon, Russell D., Croom, Scott M., Drinkwater, Michael J., ...
We describe the construction of MegaZ-LRG, a photometric redshift catalogue of over one million luminous red galaxies (LRGs) in the redshift range 0.4 < z < 0.7 with limiting magnitude i < 20. The...
Reconstructed density and velocity fields from the 2MASS Redshift Survey (2006)
Erdoğdu, Pirin, Lahav, Ofer, Huchra, John P., Colless, Matthew, Cutri, Roc M., Falco, Emilio, ...
We present the reconstructed real-space density and the predicted velocity fields from the Two-Micron All-Sky Redshift Survey (2MRS). The 2MRS is the densest all-sky redshift survey to date and...
Cross-correlation of 2MASS and WMAP3: Implications for the Integrated Sachs-Wolfe effect (2006)
Rassat, Anais, Land, Kate, Lahav, Ofer, Abdalla, Filipe B.
We perform a cross-correlation of the Cosmic Microwave Background (CMB) using the third year Wilkinson Microwave Anisotropy Probe (WMAP) data with the 2 Micron All Sky Survey (2MASS) galaxy map...
Conference Summary: Astronomy Perspective of Astro-Statistics (2006)
This is a summary of the `Astronomy Perspective' of the 4th meeting on 'Statistical Challenges in Modern Astronomy' held at Penn State University in June 2006. We comment on trends in the Astronomy...
Reconstructed Density and Velocity Fields from the 2MASS Redshift Survey (2006)
Erdogdu, Pirin, Lahav, Ofer, Huchra, John P., Colless, Matthew, Cutri, Roc M., Falco, Emilio, ...
We present the reconstructed real-space density and the predicted velocity fields from the Two Mass Redshift Survey (2MRS). The 2MRS is the densest all-sky redshift survey to date and includes about...
MegaZ-LRG: A photometric redshift catalogue of one million SDSS Luminous Red Galaxies (2006)
Collister, Adrian, Lahav, Ofer, Blake, Chris, Cannon, Russell, Croom, Scott, Drinkwater, Michael, ...
We describe the construction of MegaZ-LRG, a photometric redshift catalogue of over one million luminous red galaxies (LRGs) in the redshift range 0.4 < z < 0.7 with limiting magnitude i < 20. The...
Sub-eV upper limits on neutrino masses from cosmology (2006)
Upper limits on neutrino masses from cosmology have been reported recently to reach the impressive sub-eV level, which is competitive with future terrestrial neutrino experiments. In this brief...
Limit on the Neutrino Mass from the WMAP Three Year Data (2006)
Fukugita, Masataka, Ichikawa, Kazuhide, Kawasaki, Masahiro, Lahav, Ofer
We derive an upper limit on the neutrino mass from the WMAP three-year data alone by employing a deterministic minimisation method based on a grid search in multi-parameter space. Assuming the flat...
Blake, Chris, Collister, Adrian, Bridle, Sarah, Lahav, Ofer
We analyze MegaZ-LRG, a photometric-redshift catalogue of Luminous Red Galaxies (LRGs) based on the imaging data of the Sloan Digital Sky Survey (SDSS) 4th Data Release. MegaZ-LRG, presented in a...
The Cosmological Parameters 2006 (2006)
This is a review article for The Review of Particle Physics 2006 (aka the Particle Data Book). It forms a compact review of knowledge of the cosmological parameters as at May 2006. Topics included...
Ferreras, Ignacio, Pasquali, Anna, De Carvalho, Reinaldo R., De La Rosa, Ignacio G., Lahav, Ofer
Environmental differences in the stellar populations of early-type galaxies are explored using principal component analysis (PCA), focusing on differences between elliptical galaxies in Hickson...
Reconstructed density and velocity fields from the 2MASS Redshift Survey (2006)
Erdoğdu, Pirin, Lahav, Ofer, Mader, Jeff, Martimbeau, Nathalie, Pahre, Michael A, Parker, Quentin A, ...
We present the reconstructed real-space density and the predicted velocity fields from the Two-Micron All-Sky Redshift Survey (2MRS). The 2MRS is the densest all-sky redshift survey to date and...
Reconstructed density and velocity fields from the 2MASS Redshift Survey (2006)
Erdoğdu, Pirin, Lahav, Ofer, Mader, Jeff, Martimbeau, Nathalie, Pahre, Michael A, Parker, Quentin A, ...
We present the reconstructed real-space density and the predicted velocity fields from the Two-Micron All-Sky Redshift Survey (2MRS). The 2MRS is the densest all-sky redshift survey to date and...
Massive elliptical galaxies : From cores to haloes (2005)
Lintott, Chris, Ferreras, Ignacio, Lahav, Ofer
In the context of recent observational results that show massive ellipticals were in place at high redshifts, we reassess the status of monolithic collapse in a LCDM universe. Using a sample of over...
Dark Energy Studies: Challenges to Computational Cosmology (2005)
Annis, James, Castander, Francisco J., Evrard, August E., Frieman, Joshua A., Gaztanaga, Enrique, Jain, Bhuvnesh, ...
The ability to test the nature of dark mass-energy components in the universe through large-scale structure studies hinges on accurate predictions of sky survey expectations within a given world...
Constraining Dark Energy with the Dark Energy Survey: Theoretical Challenges (2005)
Annis, James, Bridle, Sarah, Castander, Francisco J., Evrard, August E., Fosalba, Pablo, Frieman, Joshua A., ...
The Dark Energy Survey (DES) will use a new imaging camera on the Blanco 4-m telescope at CTIO to image 5000 square degrees of sky in the South Galactic Cap in four optical bands, and to carry out...
Hilton, Matt, Collins, Chris, De Propris, Roberto, Baldry, Ivan K., Baugh, Carlton M., Bland-Hawthorn, Joss, ...
The ROSAT-ESO Flux Limited X-ray (REFLEX) galaxy cluster survey and the 2dF Galaxy Redshift Survey (2dFGRS) respectively comprise the largest, homogeneous X-ray selected cluster catalogue and...
The 6dF Galaxy Survey: Samples, Observational Techniques and the First Data Release (2005)
Jones, D. Heath, Saunders, Will, Colless, Matthew, Read, Mike A., Parker, Quentin A., Watson, Fred G., ...
The 6dF Galaxy Survey (6dFGS) aims to measure the redshifts of around 150,000 galaxies, and the peculiar velocities of a 15,000-member sub-sample, over almost the entire southern sky. When complete,...
On virialization with dark energy (2005)
We review the inclusion of dark energy into the formalism of spherical collapse, and the virialization of a two-component system, made of matter and dark energy. We compare two approaches in previous...
Hilton, Matt, Collins, Chris A., De Propris, Roberto, Baldry, Ivan K., Baugh, Carlton, Bland-Hawthorn, Joss, ...
The ROSAT-European Southern Observatory (ESO) flux-limited X-ray (REFLEX) galaxy cluster survey and the Two-degree Field Galaxy Redshift Survey (2dFGRS), respectively, comprise the largest,...
Cole, Shaun, Percival, Will, Peacock, John A., Norberg, Peder, Baugh, Carlton, Frenk, Carlos S., ...
We present a power-spectrum analysis of the final 2dF Galaxy Redshift Survey (2dFGRS), employing a direct Fourier method. The sample used comprises 221 414 galaxies with measured redshifts. We...
Conway, Edward, Maddox, Stephen J., Wild, Vivienne, Peacock, John A., Hawkins, Edward, Norberg, P., ...
We present an analysis of the relative bias between early- and late-type galaxies in the Two-degree Field Galaxy Redshift Survey (2dFGRS) – as defined by the η parameter of Madgwick et al., which...
Hilton, Matt, Collins, Chris A., De Propris, Roberto, Baldry, Ivan K., Baugh, Carlton, Bland-Hawthorn, Joss, ...
The ROSAT-European Southern Observatory (ESO) flux-limited X-ray (REFLEX) galaxy cluster survey and the Two-degree Field Galaxy Redshift Survey (2dFGRS), respectively, comprise the largest,...
Cole, Shaun, Percival, Will, Peacock, John A., Norberg, Peder, Baugh, Carlton, Frenk, Carlos S., ...
We present a power-spectrum analysis of the final 2dF Galaxy Redshift Survey (2dFGRS), employing a direct Fourier method. The sample used comprises 221 414 galaxies with measured redshifts. We...
Conway, Edward, Maddox, Stephen J., Wild, Vivienne, Peacock, John A., Hawkins, Edward, Norberg, P., ...
We present an analysis of the relative bias between early- and late-type galaxies in the Two-degree Field Galaxy Redshift Survey (2dFGRS) – as defined by the η parameter of Madgwick et...
The 2dF Galaxy Redshift Survey: stochastic relative biasing between galaxy populations (2005)
Wild, Vivienne, Peacock, John A., Lahav, Ofer, Conway, Edward, Maddox, Stephen J., Baldry, Ivan K., ...
It is well known that the clustering of galaxies depends on galaxy type. Such relative bias complicates the inference of cosmological parameters from galaxy redshift surveys, and is a challenge to...
The 2dF Galaxy Redshift Survey: luminosity functions by density environment and galaxy type (2005)
Croton, Darren J., Farrar, Glennys R., Norberg, Peder, Colless, Matthew, Peacock, John A., Baldry, Ivan K., ...
We use the 2dF Galaxy Redshift Survey to measure the dependence of the bJ-band galaxy luminosity function on large-scale environment, defined by density contrast in spheres of radius 8 h−1 Mpc ,...
The 2dF Galaxy Redshift Survey: stochastic relative biasing between galaxy populations (2005)
Wild, Vivienne, Peacock, John A., Lahav, Ofer, Conway, Edward, Maddox, Steve, Baldry, Ivan K., ...
It is well known that the clustering of galaxies depends on galaxy type. Such relative bias complicates the inference of cosmological parameters from galaxy redshift surveys, and is a challenge to...
The 2dF Galaxy Redshift Survey: luminosity functions by density environment and galaxy type (2005)
Croton, Darren J., Farrar, Glennys R., Norberg, Peder, Colless, Matthew, Peacock, John A., Baldry, Ivan K., ...
We use the 2dF Galaxy Redshift Survey to measure the dependence of the bJ-band galaxy luminosity function on large-scale environment, defined by density contrast in spheres of radius 8 h−1 Mpc...
Large-scale structure from 2dFGRS (2005)
Peacock, John A., Colless, Matthew, Baldry, Ivan K., Baugh, Carlton, Bland-Hawthorn, Joss, Bridges, Terry J., ...
The 2dF Galaxy Redshift Survey was the first to observe more than 100,000 redshifts, making possible precise measurements of many aspects of galaxy clustering. The final database of more than 230,000...
Hilton, Matt, Collins, Chris A., De Propris, Roberto, Baldry, Ivan K., Baugh, Carlton, Bland-Hawthorn, Joss, ...
The ROSAT-European Southern Observatory (ESO) flux-limited X-ray (REFLEX) galaxy cluster survey and the Two-degree Field Galaxy Redshift Survey (2dFGRS), respectively, comprise the largest,...
Cole, Shaun, Percival, Will, Peacock, John A., Norberg, Peder, Baugh, Carlton, Frenk, Carlos S., ...
We present a power-spectrum analysis of the final 2dF Galaxy Redshift Survey (2dFGRS), employing a direct Fourier method. The sample used comprises 221 414 galaxies with measured redshifts. We...
Conway, Edward, Maddox, Stephen J., Wild, Vivienne, Peacock, John A., Hawkins, Edward, Norberg, P., ...
We present an analysis of the relative bias between early- and late-type galaxies in the Two-degree Field Galaxy Redshift Survey (2dFGRS) – as defined by the η parameter of Madgwick et al., which...
The 2dF Galaxy Redshift Survey: stochastic relative biasing between galaxy populations (2005)
Wild, Vivienne, Peacock, John A., Lahav, Ofer, Conway, Edward, Maddox, Stephen J., Baldry, Ivan K., ...
It is well known that the clustering of galaxies depends on galaxy type. Such relative bias complicates the inference of cosmological parameters from galaxy redshift surveys, and is a challenge to...
The 2dF Galaxy Redshift Survey: luminosity functions by density environment and galaxy type (2005)
Croton, Darren J., Farrar, Glennys R., Norberg, Peder, Colless, Matthew, Peacock, John A., Baldry, Ivan K., ...
We use the 2dF Galaxy Redshift Survey to measure the dependence of the bJ-band galaxy luminosity function on large-scale environment, defined by density contrast in spheres of radius 8 h−1 Mpc ,...
Large-scale structure from 2dFGRS (2005)
Peacock, John A., Colless, Matthew, Baldry, Ivan K., Baugh, Carlton, Bland-Hawthorn, Joss, Bridges, Terry J., ...
The 2dF Galaxy Redshift Survey was the first to observe more than 100,000 redshifts, making possible precise measurements of many aspects of galaxy clustering. The final database of more than 230,000...
The distribution of red and blue galaxies in groups: an empirical test of the halo model (2004)
Collister, Adrian A., Lahav, Ofer
The popular halo model predicts that the power spectrum of the galaxy fluctuations is simply the sum of the large scale linear halo-halo power spectrum and the weighted power spectrum of the halo...
Neutrino Masses from Cosmological Probes (2004)
There is a renewed interest in constraining the sum of the masses of the three neutrino flavours by using cosmological measurements. Solar, atmospheric, and reactor neutrino experiments have...
Nearby Large-Scale Structures and the Zone of Avoidance: A Conference Summary and Assessment (2004)
This conference has brought together many of the world's `cosmographers', particularly those focussed on the mapping nearby large-scale structures. Not surprisingly, numerous portrayals of the Local...
Quantifying the Cosmic Web in the New Era of Redshift Surveys (2004)
Two main strategies have been implemented in mapping the local universe: whole-sky 'shallow' surveys and 'deep' surveys over limited parts of the sky. The two approaches complement each other in...
Weighing Neutrinos with Large-Scale Structure (2004)
While it is established that the effect of neutrinos on the evolution of cosmic structure is small, the upper limits derived from large-scale structure could help significantly to constrain the...
The 2dF Galaxy Redshift Survey: the local E+A galaxy population (2004)
Blake, Chris, Pracy, Michael, Couch, Warrick, Bekki, Kenji, Lewis, Ian, Glazebrook, Karl, ...
We select a sample of low-redshift (z ~ 0.1) E+A galaxies from the 2dF Galaxy Redshift Survey (2dFGRS). The spectra of these objects are defined by strong hydrogen Balmer absorption lines (H-delta,...
The Cosmological Parameters (2004)
This is a new review article for The Review of Particle Physics 2004 (aka the Particle Data Book). It forms a compact review of knowledge of the cosmological parameters as at the end of 2003. Topics...
Percival, Will J., Burkey, Daniel, Heavens, Alan, Taylor, Andy, Cole, Shaun, Peacock, John A., ...
We present the result of a decomposition of the 2dFGRS galaxy overdensity field into an orthonormal basis of spherical harmonics and spherical Bessel functions. Galaxies are expected to directly...
Substructure Analysis of Selected Low Richness 2dFGRS Clusters of Galaxies (2004)
Burgett, William S., Vick, Michael M., Davis, David S., Colless, Matthew, De Propris, Roberto, Baldry, Ivan, ...
Complementary one-, two-, and three-dimensional tests for detecting the presence of substructure in clusters of galaxies are applied to recently obtained data from the 2dF Galaxy Redshift Survey. The...
The 2dF Galaxy Redshift Survey as a Cosmological Laboratory (2004)
The 2dF Galaxy Redshift Survey (2dFGRS) of 230,000 redshifts of nearby (z~0.1) galaxies is now complete. It has allowed the 2dFGRS team and others to estimate fundamental cosmological parameters and...
The 2dF Galaxy Redshift Survey: stochastic relative biasing between galaxy populations (2004)
Wild, Vivienne, Peacock, John A., Lahav, Ofer, Conway, Edward, Maddox, Steve, Baldry, I. K., ...
It is well known that the clustering of galaxies depends on galaxy type.Such relative bias complicates the inference of cosmological parameters from galaxy redshift surveys, and is a challenge to...
The 6dF Galaxy Survey: Samples, Observational Techniques and the First Data Release (2004)
Jones, D. Heath, Saunders, Will, Colless, Matthew, Read, Mike A., Parker, Quentin A., Watson, Fred G., ...
The 6dF Galaxy Survey (6dFGS) aims to measure the redshifts of around 150,000 galaxies, and the peculiar velocities of a 15,000-member sub-sample, over almost the entire southern sky. When complete,...
De Propris, Roberto, Colless, Matthew, Peacock, John, Couch, Warrick, Driver, Simon, Balogh, Michael, ...
We derive the fraction of blue galaxies in a sample of clusters at z < 0.11 and the general field at the same redshift. The value of the blue fraction is observed to depend on the luminosity limit...
The 2dF Galaxy Redshift Survey: the clustering of galaxy groups (2004)
Padilla, Nelson D., Baugh, Carlton M., Eke, Vincent R., Norberg, Peder, Cole, Shaun, Frenk, Carlos S., ...
The 6dF galaxy survey : samples, observational techniques and the first data release (2004)
Jones, D. Heath, Saunders, Will, Hartley, Malcom, Cass, Paul, James, Dionne, Russell, Ken, ...
The 6dF Galaxy Survey (6dFGS) aims to measure the redshifts of around 150 000 galaxies, and the peculiar velocities of a 15 000-member subsample, over almost the entire southern sky. When complete,...
The 6dF galaxy survey : samples, observational techniques and the first data release (2004)
Jones, D. Heath, Saunders, Will, Hartley, Malcom, Cass, Paul, James, Dionne, Russell, Ken, ...
The 6dF Galaxy Survey (6dFGS) aims to measure the redshifts of around 150 000 galaxies, and the peculiar velocities of a 15 000-member subsample, over almost the entire southern sky. When complete,...
Substructure analysis of selected low-richness 2dFGRS clusters of galaxies (2004)
Burgett, William S., Vick, Michael M., Davis, D. Scott, Colless, Matthew, De Propris, Roberto, Baldry, Ivan K., ...
Complementary one-, two- and three-dimensional tests for detecting the presence of substructure in clusters of galaxies are applied to recently obtained data from the 2dF Galaxy Redshift Survey. The...
Galaxy ecology : groups and low-density environments in the SDSS and 2dFGRS (2004)
Balogh, Michael L., Eke, Vince, Miller, Christopher J., Lewis, Ian, Bower, Richard G., Couch, Warrick J., ...
We analyse the observed correlation between galaxy environment and Hα emission-line strength, using volume-limited samples and group catalogues of 24 968 galaxies at 0.05 < z < 0.095,...
Eke, Vince, Frenk, Carlos S., Baugh, Carlton, Cole, Shaun, Norberg, Peder, Peacock, John A., ...
The Two-degree Field Galaxy Redshift Survey (2dFGRS) Percolation-Inferred Galaxy Group (2PIGG) catalogue of ∼29 000 objects is used to study the luminous content of galaxy systems of various...
Galaxy groups in the 2dFGRS: the group-finding algorithm and the 2PIGG catalogue (2004)
Eke, Vince, Baugh, Carlton, Cole, Shaun, Frenk, Carlos S., Norberg, Peder, Peacock, John A., ...
The construction of a catalogue of galaxy groups from the Two-degree Field Galaxy Redshift Survey (2dFGRS) is described. Groups are identified by means of a friends-of-friends percolation algorithm...
The 2dF Galaxy Redshift Survey: the local E+A galaxy population (2004)
Blake, Chris, Pracy, Michael B., Couch, Warrick J., Bekki, Kenji, Lewis, Ian, Glazebrook, Karl, ...
We select a sample of low-redshift (z ∼ 0.1) E+A galaxies from the 2dF Galaxy Redshift Survey (2dFGRS). The spectra of these objects are defined by strong hydrogen Balmer absorption lines...
The 2dF Galaxy Redshift Survey: the clustering of galaxy groups (2004)
Padilla, Nelson D., Baugh, Carlton, Eke, Vincent R., Norberg, Peder, Cole, Shaun, Frenk, Carlos S., ...
We measure the clustering of galaxy groups in the 2dFGRS Percolation-Inferred Galaxy Group (2PIGG) catalogue. The 2PIGG sample has 28 877 groups with at least two members. The clustering amplitude of...
De Propris, Roberto, Colless, Matthew, Peacock, John A., Couch, Warrick J., Driver, Simon P., Balogh, Michael L., ...
We derive the fraction of blue galaxies in a sample of clusters at z < 0.11 and the general field at the same redshift. The value of the blue fraction is observed to depend on the luminosity limit...
The 2dF Galaxy Redshift Survey: higher-order galaxy correlation functions (2004)
Croton, Darren J., Gaztanaga, Enrique, Baugh, Carlton, Norberg, Peder, Colless, Matthew, Baldry, Ivan K., ...
We measure moments of the galaxy count probability distribution function in the Two-degree Field Galaxy Redshift Survey (2dFGRS). The survey is divided into volume-limited subsamples in order to...
The 2dF Galaxy Redshift Survey: Wiener reconstruction of the cosmic web (2004)
Erdogdu, Pirin, Lahav, Ofer, Zaroubi, Saleem, Efstathiou, George P., Moody, Stephen J., Peacock, John A., ...
We reconstruct the underlying density field of the Two-degree Field Galaxy Redshift Survey (2dFGRS) for the redshift range 0.035 < z < 0.200 using the Wiener filtering method. The Wiener filter...
The 2dF Galaxy Redshift Survey: hierarchical galaxy clustering (2004)
Baugh, Carlton, Croton, Darren J., Gaztanaga, Enrique, Norberg, Peder, Colless, Matthew, Baldry, Ivan K., ...
We use the Two-Degree Field Galaxy Redshift Survey (2dFGRS) to test the hierarchical scaling hypothesis: namely, that the p-point galaxy correlation functions can be written in terms of the two-point...
The 2dF Galaxy Redshift Survey: voids and hierarchical scaling models (2004)
Croton, Darren J., Colless, Matthew, Gaztanaga, Enrique, Baugh, Carlton, Norberg, Peder, Baldry, Ivan K., ...
We measure the redshift-space reduced void probability function (VPF) for 2dFGRS volume-limited galaxy samples covering the absolute magnitude range MbJ -5log10 h = -18 to -22. Theoretically, the VPF...
Percival, Will J., Burkey, Daniel, Heavens, Alan F., Taylor, Andy N., Cole, Shaun, Peacock, John A., ...
We present the result of a decomposition of the 2dF Galaxy Redshift Survey (2dFGRS) galaxy overdensity field into an orthonormal basis of spherical harmonics and spherical Bessel functions. Galaxies...
The 2dF galaxy redshift survey: clustering properties of radio galaxies (2004)
Magliocchetti, Manuela, Maddox, Stephen J., Hawkins, Edward, Peacock, John A., Bland-Hawthorn, Joss, Bridges, Terry J., ...
The clustering properties of local, S1.4 GHz ≥ 1 mJy, radio sources are investigated for a sample of 820 objects drawn from the joint use of the Faint Images of the Radio Sky at 20 cm (FIRST)...
Substructure analysis of selected low-richness 2dFGRS clusters of galaxies (2004)
Burgett, William S., Vick, Michael M., Davis, David S., Colless, Matthew, De Propris, Roberto, Baldry, Ivan, ...
Complementary one-, two- and three-dimensional tests for detecting the presence of substructure in clusters of galaxies are applied to recently obtained data from the 2dF Galaxy Redshift Survey. The...
Galaxy ecology: groups and low-density environments in the SDSS and 2dFGRS (2004)
Balogh, Michael L., Eke, Vince, Miller, Christopher J., Lewis, Ian, Bower, Richard G., Couch, Warrick J., ...
We analyse the observed correlation between galaxy environment and Hα emission-line strength, using volume-limited samples and group catalogues of 24 968 galaxies at 0.05 < z < 0.095, drawn from the...
Eke, Vince, Frenk, Carlos S., Baugh, Carlton, Cole, Shaun, Norberg, Peder, Peacock, John A., ...
The Two-degree Field Galaxy Redshift Survey (2dFGRS) Percolation-Inferred Galaxy Group (2PIGG) catalogue of ∼29 000 objects is used to study the luminous content of galaxy systems of various...
Galaxy groups in the 2dFGRS: the group-finding algorithm and the 2PIGG catalogue (2004)
Eke, Vince, Baugh, Carlton, Cole, Shaun, Frenk, Carlos S., Norberg, Peder, Peacock, John A., ...
The construction of a catalogue of galaxy groups from the Two-degree Field Galaxy Redshift Survey (2dFGRS) is described. Groups are identified by means of a friends-of-friends percolation algorithm...
The 2dF Galaxy Redshift Survey: the local E+A galaxy population (2004)
Blake, Chris, Pracy, Michael B., Couch, Warrick J., Bekki, Kenji, Lewis, Ian, Glazebrook, Karl, ...
We select a sample of low-redshift (z ∼ 0.1) E+A galaxies from the 2dF Galaxy Redshift Survey (2dFGRS). The spectra of these objects are defined by strong hydrogen Balmer absorption lines...
The 2dF Galaxy Redshift Survey: the clustering of galaxy groups (2004)
Padilla, Nelson D., Baugh, Carlton, Eke, Vincent R., Norberg, Peder, Cole, Shaun, Frenk, Carlos S., ...
We measure the clustering of galaxy groups in the 2dFGRS Percolation-Inferred Galaxy Group (2PIGG) catalogue. The 2PIGG sample has 28 877 groups with at least two members. The clustering amplitude of...
De Propris, Roberto, Colless, Matthew, Peacock, John A., Couch, Warrick J., Driver, Simon P., Balogh, Michael L., ...
We derive the fraction of blue galaxies in a sample of clusters at z < 0.11 and the general field at the same redshift. The value of the blue fraction is observed to depend on the luminosity limit...
The 2dF Galaxy Redshift Survey: higher-order galaxy correlation functions (2004)
Croton, Darren J., Gaztanaga, Enrique, Baugh, Carlton, Norberg, Peder, Colless, Matthew, Baldry, Ivan K., ...
We measure moments of the galaxy count probability distribution function in the Two-degree Field Galaxy Redshift Survey (2dFGRS). The survey is divided into volume-limited subsamples in order to...
The 2dF Galaxy Redshift Survey: Wiener reconstruction of the cosmic web (2004)
Erdogdu, Pirin, Lahav, Ofer, Zaroubi, Saleem, Efstathiou, George P., Moody, Stephen J., Peacock, John A., ...
We reconstruct the underlying density field of the Two-degree Field Galaxy Redshift Survey (2dFGRS) for the redshift range 0.035 < z < 0.200 using the Wiener filtering method. The Wiener filter...
The 2dF Galaxy Redshift Survey: hierarchical galaxy clustering (2004)
Baugh, Carlton, Croton, Darren J., Gaztanaga, Enrique, Norberg, Peder, Colless, Matthew, Baldry, Ivan K., ...
We use the Two-Degree Field Galaxy Redshift Survey (2dFGRS) to test the hierarchical scaling hypothesis: namely, that the p-point galaxy correlation functions can be written in terms of the two-point...
The 2dF Galaxy Redshift Survey: voids and hierarchical scaling models (2004)
Croton, Darren J., Colless, Matthew, Gaztanaga, Enrique, Baugh, Carlton, Norberg, Peder, Baldry, Ivan K., ...
We measure the redshift-space reduced void probability function (VPF) for 2dFGRS volume-limited galaxy samples covering the absolute magnitude range MbJ -5log10 h = -18 to -22. Theoretically, the VPF...
Percival, Will J., Burkey, Daniel, Heavens, Alan F., Taylor, Andy N., Cole, Shaun, Peacock, John A., ...
We present the result of a decomposition of the 2dF Galaxy Redshift Survey (2dFGRS) galaxy overdensity field into an orthonormal basis of spherical harmonics and spherical Bessel functions. Galaxies...
The 2dF Galaxy Redshift Survey: clustering properties of radio galaxies (2004)
Magliocchetti, Manuela, Maddox, Stephen J., Hawkins, Edward, Peacock, John A., Bland-Hawthorn, Joss, Bridges, Terry J., ...
The clustering properties of local, S1.4 GHz ≥ 1 mJy, radio sources are investigated for a sample of 820 objects drawn from the joint use of the Faint Images of the Radio Sky at 20 cm (FIRST) and...
The 2dF Galaxy Redshift Survey: Wiener Reconstruction of the Cosmic Web (2003)
Erdogdu, Pirin, Lahav, Ofer, Zaroubi, Saleem, Efstathiou, George, Moody, Steve, Peacock, John A., ...
We reconstruct the underlying density field of the 2 degree Field Galaxy Redshift Survey (2dFGRS) for the redshift range 0.035
The 2dF Galaxy Redshift Survey: Clustering properties of radio galaxies (2003)
Magliocchetti, Manuela, Maddox, Steve J., Hawkins, Ed, Peacock, John A., Bland-Hawthorn, Joss, Bridges, Terry, ...
The clustering properties of local, S_{1.4 GHz} > 1 mJy, radio sources are investigated for a sample of 820 objects drawn from the joint use of the FIRST and 2dF Galaxy Redshift surveys. To this aim,...
Galaxy ecology: groups and low-density environments in the SDSS and 2dFGRS (2003)
Balogh, Michael, Eke, Vince, Miller, Chris, Lewis, Ian, Bower, Richard, Couch, Warrick, ...
We analyse the observed correlation between galaxy environment and H-alpha emission line strength, using volume-limited samples and group catalogues of 24968 galaxies drawn from the 2dF Galaxy...
ANNz: estimating photometric redshifts using artificial neural networks (2003)
Collister, Adrian A., Lahav, Ofer
We introduce ANNz, a freely available software package for photometric redshift estimation using Artificial Neural Networks. ANNz learns the relation between photometry and redshift from an...
Measuring our universe from galaxy redshift surveys (2003)
Galaxy redshift surveys have achieved significant progress over the last couple of decades. Those surveys tell us in the most straightforward way what our local universe looks like. While the galaxy...
The Cosmological Parameters (2003)
Pre-publication version withdrawn at the request of the journal. Final version now available in Reviews of Particle Physics at http://pdg.lbl.gov/2004/reviews/contents_sports.html
The 2dF Galaxy Redshift Survey: Final Data Release (2003)
Colless, Matthew, Peterson, Bruce A., Jackson, Carole, Peacock, John A., Cole, Shaun, Norberg, Peder, ...
The 2dF Galaxy Redshift Survey (2dFGRS) has obtained spectra for 245591 sources, mainly galaxies, brighter than a nominal extinction-corrected magnitude limit of b_J=19.45. Reliable redshifts were...
Precision Cosmology? Not Just Yet (2003)
Bridle, Sarah L., Lahav, Ofer, Ostriker, Jeremiah P., Steinhardt, Paul J.
The recent announcement from the Wilkinson Microwave Anisotropy Probe (WMAP) satellite experiment combined with other recent advances in observational cosmology verifies key components of the...
Upper limits on neutrino masses from the 2dFGRS and WMAP: the role of priors (2003)
Solar, atmospheric, and reactor neutrino experiments have confirmed neutrino oscillations, implying that neutrinos have non-zero mass, but without pinning down their absolute masses. While it is...
The 2dF Galaxy Redshift Survey: final data release (2003)
Colless, Matthew, Peterson, Bruce A., Jackson, Carole, Peacock, John A., Cole, Shaun, Norberg, Peder, ...
The 2dF Galaxy Redshift Survey (2dFGRS) has obtained spectra for 245591 sources, mainly galaxies, brighter than a nominal extinction-corrected magnitude limit of b_J=19.45. Reliable redshifts were...
The 2dF Galaxy Redshift Survey: final data release (2003)
Colless, Matthew, Peterson, Bruce A., Jackson, Carole, Peacock, John A., Cole, Shaun, Norberg, Peder, ...
The 2dF Galaxy Redshift Survey (2dFGRS) has obtained spectra for 245591 sources, mainly galaxies, brighter than a nominal extinction-corrected magnitude limit of b_J=19.45. Reliable redshifts were...
The 2dF Galaxy Redshift Survey: galaxy clustering per spectral type (2003)
Madgwick, Darren, Hawkins, Edward, Lahav, Ofer, Maddox, Stephen J., Norberg, Peder, Peacock, John A., ...
We have calculated the two-point correlation functions in redshift space, Ζ (σ, π), for galaxies of different spectral types in the 2dF Galaxy Redshift Survey. Using these...
The 2dF Galaxy Redshift Survey: the luminosity function of cluster galaxies (2003)
De Propris, Roberto, Colless, Matthew, Driver, Simon P., Couch, Warrick J., Peacock, John A., Baldry, Ivan K., ...
We have determined the composite luminosity function (LF) for galaxies in 60 clusters from the 2dF Galaxy Redshift Survey. The LF spans the range -22.5 < MbJ <-15, and is well fitted by a...
Hawkins, Edward, Maddox, Stephen J., Cole, Shaun, Lahav, Ofer, Madgwick, Darren, Norberg, Peder, ...
We present a detailed analysis of the two-point correlation function, ξ(σ, π) , from the 2dF Galaxy Redshift Survey (2dFGRS). The large size of the catalogue, which contains...
The 2dF Galaxy Redshift Survey: galaxy clustering per spectral type (2003)
Madgwick, Darren, Hawkins, Edward, Lahav, Ofer, Maddox, Stephen J., Norberg, Peder, Peacock, John A., ...
We have calculated the two-point correlation functions in redshift space, Ζ (σ, π), for galaxies of different spectral types in the 2dF Galaxy Redshift Survey. Using these...
The 2dF Galaxy Redshift Survey: the luminosity function of cluster galaxies (2003)
De Propris, Roberto, Colless, Matthew, Driver, Simon P., Couch, Warrick J., Peacock, John A., Baldry, Ivan K., ...
We have determined the composite luminosity function (LF) for galaxies in 60 clusters from the 2dF Galaxy Redshift Survey. The LF spans the range -22.5 < MbJ <-15, and is well fitted by a...
Hawkins, Edward, Maddox, Stephen J., Cole, Shaun, Lahav, Ofer, Madgwick, Darren, Norberg, Peder, ...
We present a detailed analysis of the two-point correlation function, ξ(σ, π) , from the 2dF Galaxy Redshift Survey (2dFGRS). The large size of the catalogue, which contains...
The 2dF Galaxy Redshift Survey: final data release (2003)
Colless, Matthew, Peterson, Bruce A., Jackson, Carole, Peacock, John A., Cole, Shaun, Norberg, Peder, ...
The 2dF Galaxy Redshift Survey (2dFGRS) has obtained spectra for 245591 sources, mainly galaxies, brighter than a nominal extinction-corrected magnitude limit of b_J=19.45. Reliable redshifts were...
Could Dark Energy be Measured from Redshift Surveys ? (2002)
We review the ability of redshift surveys to provide constraints on the Dark Energy content of the Universe. The matter power spectrum and dynamics at the present epoch are nearly `blind' to Dark...
Madgwick, Darren, Somerville, Rachel, Lahav, Ofer, Ellis, Richard
We investigate the physical significance of a new spectral parameter, eta. This parameter was defined using a Principal Component Analysis of the 2dF Galaxy Redshift Survey, to retain astrophysical...
Moriond Conference Summary: The Cosmological Model(s) (2002)
The XXXVIIth Rencontres de Moriond on "The Cosmological Model" is briefly summarized. Almost none of the current observations argues against the popular Cold Dark Matter + Lambda concordance model....
Parameter constraints for flat cosmologies from CMB and 2dFGRS power spectra (2002)
Percival, Will J., Sutherland, Will, Peacock, John A., Baugh, Carlton M., Bland-Hawthorn, Joss, Bridges, Terry, ...
We constrain flat cosmological models with a joint likelihood analysis of a new compilation of data from the cosmic microwave background (CMB) and from the 2dF Galaxy Redshift Survey (2dFGRS)....
The 2dF Galaxy Redshift Survey: Cosmological Parameters and Galaxy Biasing (2002)
The 2dF Galaxy Redshift Survey (2dFGRS) has already measured over 220,000 redshifts of nearby (z ~0.1) galaxies. It allows us to estimate fundamental cosmological parameters and to subdivide the...
Lewis, Ian, Balogh, Michael, De Propris, Roberto, Couch, Warrick, Bower, Richard, Offer, Alison, ...
We have measured the equivalent width of the H-alpha emission line for 11006 galaxies brighter than M_b=-19 (LCDM) at 0.05
Spectroscopic detection of quasars in the 2dF Galaxy Redshift Survey (2002)
Madgwick, Darren S., Hewett, Paul C., Mortlock, Daniel J., Lahav, Ofer
The 100,000 spectra from the 2 degree Field Galaxy Redshift Survey (2dFGRS) in the 100k Public Data Release represent the largest single compilation of galaxy spectra available. By virtue of its...
Estimating photometric redshifts with artificial neural networks (2002)
Firth, Andrew E., Lahav, Ofer, Somerville, Rachel S.
A new approach to estimating photometric redshifts - using Artificial Neural Networks (ANNs) - is investigated. Unlike the standard template-fitting photometric redshift technique, a large...
Erdogdu, Pirin, Ettori, Stefano, Lahav, Ofer
We use a generalised procedure for the combined likelihood analysis of different cosmological probes, the `Hyper-Parameters' method, that allows freedom in the relative weights of the raw...
The 2dF Galaxy Redshift Survey: galaxy luminosity functions per spectral type (2002)
Madgwick, Darren S., Lahav, Ofer, Bland-Hawthorn, Joss, Bridges, Terry, Cannon, Russell, Colless, Matthew, ...
not available
The 2dF Galaxy Redshift Survey: galaxy luminosity functions per spectral type (2002)
Madgwick, Darren S., Lahav, Ofer, Bland-Hawthorn, Joss, Bridges, Terry, Cannon, Russell, Colless, Matthew, ...
not available
Lahav, Ofer, Bridle, Sarah L., Colless, Matthew, Jackson, Carole, Peterson, Bruce A. (et Al.)
not available
The 2dF Galaxy Redshift Survey: galaxy luminosity functions per spectral type (2002)
Madgwick, Darren S., Lahav, Ofer, Bland-Hawthorn, Joss, Bridges, Terry, Cannon, Russell, Colless, Matthew, ...
not available
Lahav, Ofer, Bridle, Sarah L., Colless, Matthew, Jackson, Carole, Peterson, Bruce A. (et Al.)
not available
Baldry, Ivan K., Glazebrook, Karl, Baugh, Carlton, Bland-Hawthorn, Joss, Bridges, Terry J., Cannon, Russell D., ...
We present the first results on the history of star formation in the universe based on the "cosmic spectrum," in particular the volume-averaged, luminosity-weighted, stellar absorption-line...
Norberg, Peder, Baugh, Carlton, Hawkins, Edward, Maddox, Stephen J., Madgwick, Darren, Lahav, Ofer, ...
We investigate the dependence of galaxy clustering on luminosity and spectral type using the 2dF Galaxy Redshift Survey (2dFGRS). Spectral types are assigned using the principal-component analysis of...
The 2dF Galaxy Redshift Survey: galaxy luminosity functions per spectral type (2002)
Madgwick, Darren, Lahav, Ofer, Baldry, Ivan K., Baugh, Carlton, Bland-Hawthorn, Joss, Bridges, Terry J., ...
We calculate the optical bJ luminosity function (LF) of the 2dF Galaxy Redshift Survey (2dFGRS) for different subsets defined by their spectral properties. These spectrally selected subsets are...
The 2dF Galaxy Redshift Survey: the population of nearby radio galaxies at the 1-mJy level (2002)
Magliocchetti, Manuela, Maddox, Stephen J., Jackson, C. A., Bland-Hawthorn, Joss, Bridges, Terry J., Cannon, Russell D., ...
We use redshift determinations and spectral analysis of galaxies in the 2dF Galaxy Redshift Survey to study the properties of local radio sources with S ≥ 1 mJy. 557 objects (hereafter called the...
Sadler, Elaine M., Jackson, C. A., Cannon, Russell D., McIntyre, Vincent J., Murphy, Tara, Bland-Hawthorn, Joss, ...
We have cross-matched the 1.4-GHz NRAO VLA Sky Survey (NVSS) with the first 210 fields observed in the 2dF Galaxy Redshift Survey (2dFGRS), covering an effective area of 325 deg2 (about 20 per cent...
Lewis, Ian, Balogh, Michael L., De Propris, Roberto, Couch, Warrick J., Bower, Richard G., Offer, Alison R., ...
We have measured the equivalent width of the Ha emission line for 11 006 galaxies brighter than Mb, = -19 (ΩΛ = 0.7, Ωm = 0.3, H0 = 70 km s-1 Mpc-1) at 0.05 < z < 0.1 in the 2dF Galaxy Redshift...
The 2dF Galaxy Redshift Survey: a targeted study of catalogued clusters of galaxies (2002)
De Propris, Roberto, Couch, Warrick J., Colless, Matthew, Dalton, Gavin B., Collins, Chris A., Baugh, Carlton, ...
We have carried out a study of known clusters within the 2dF Galaxy Redshift Survey (2dFGRS) observed areas and have identified 431 Abell, 173 APM and 343 EDCC clusters. Precise redshifts, velocity...
The 2dF Galaxy Redshift Survey: the bias of galaxies and the density of the Universe (2002)
Verde, Licia, Heavens, Alan F., Percival, Will J., Matarrese, Sabino, Baugh, Carlton, Bland-Hawthorn, Joss, ...
We compute the bispectrum of the 2dF Galaxy Redshift Survey (2dFGRS) and use it to measure the bias parameter of the galaxies. This parameter quantifies the strength of clustering of the galaxies...
Percival, Will J., Sutherland, William J., Peacock, John A., Baugh, Carlton, Bland-Hawthorn, Joss, Bridges, Terry J., ...
We constrain flat cosmological models with a joint likelihood analysis of a new compilation of data from the cosmic microwave background (CMB) and from the 2dF Galaxy Redshift Survey (2dFGRS)....
Lahav, Ofer, Bridle, Sarah, Percival, Will J., Peacock, John A., Efstathiou, George P., Baugh, Carlton, ...
We compare the amplitudes of fluctuations probed by the 2dF Galaxy Redshift Survey (2dFGRS) and by the latest measurements of the cosmic microwave background (CMB) anisotropies. By combining the...
New upper limit on the total neutrino mass from the 2 Degree Field Galaxy Redshift Survey (2002)
Elgaroy, O., Lahav, Ofer, Percival, Will J., Peacock, John A., Madgwick, Darren, Bridle, Sarah, ...
We constrain fν≡Ων/Ωm, the fractional contribution of neutrinos to the total mass density in the Universe, by comparing the power spectrum of fluctuations derived from the 2 Degree Field Galaxy...
Efstathiou, George P., Moody, Stephen J., Peacock, John A., Percival, Will J., Baugh, Carlton, Bland-Hawthorn, Joss, ...
We perform a joint likelihood analysis of the power spectra of the 2dF Galaxy Redshift Survey (2dFGRS) and the cosmic microwave background (CMB) anisotropies under the assumptions that the initial...
Norberg, Peder, Cole, Shaun, Baugh, Carlton, Frenk, Carlos S., Baldry, Ivan K., Bland-Hawthorn, Joss, ...
We use more than 110 500 galaxies from the 2dF Galaxy Redshift Survey (2dFGRS) to estimate the bJ-band galaxy luminosity function at redshift z = 0, taking account of evolution, the distribution of...
Baldry, Ivan K., Glazebrook, Karl, Baugh, Carlton, Bland-Hawthorn, Joss, Bridges, Terry J., Cannon, Russell D., ...
We present the first results on the history of star formation in the universe based on the "cosmic spectrum," in particular the volume-averaged, luminosity-weighted, stellar absorption-line...
Norberg, Peder, Baugh, Carlton, Hawkins, Edward, Maddox, Stephen J., Madgwick, Darren, Lahav, Ofer, ...
We investigate the dependence of galaxy clustering on luminosity and spectral type using the 2dF Galaxy Redshift Survey (2dFGRS). Spectral types are assigned using the principal-component analysis of...
The 2dF Galaxy Redshift Survey: galaxy luminosity functions per spectral type (2002)
Madgwick, Darren, Lahav, Ofer, Baldry, Ivan K., Baugh, Carlton, Bland-Hawthorn, Joss, Bridges, Terry J., ...
We calculate the optical bJ luminosity function (LF) of the 2dF Galaxy Redshift Survey (2dFGRS) for different subsets defined by their spectral properties. These spectrally selected subsets are...
The 2dF Galaxy Redshift Survey: the population of nearby radio galaxies at the 1-mJy level (2002)
Magliocchetti, Manuela, Maddox, Stephen J., Jackson, C. A., Bland-Hawthorn, Joss, Bridges, Terry J., Cannon, Russell D., ...
We use redshift determinations and spectral analysis of galaxies in the 2dF Galaxy Redshift Survey to study the properties of local radio sources with S ≥ 1 mJy. 557 objects (hereafter called the...
Sadler, Elaine M., Jackson, C. A., Cannon, Russell D., McIntyre, Vincent J., Murphy, Tara, Bland-Hawthorn, Joss, ...
We have cross-matched the 1.4-GHz NRAO VLA Sky Survey (NVSS) with the first 210 fields observed in the 2dF Galaxy Redshift Survey (2dFGRS), covering an effective area of 325 deg2 (about 20 per cent...
Lewis, Ian, Balogh, Michael L., De Propris, Roberto, Couch, Warrick J., Bower, Richard G., Offer, Alison R., ...
We have measured the equivalent width of the Ha emission line for 11 006 galaxies brighter than Mb, = -19 (ΩΛ = 0.7, Ωm = 0.3, H0 = 70 km s-1 Mpc-1) at 0.05 < z < 0.1 in the 2dF Galaxy Redshift...
The 2dF Galaxy Redshift Survey: a targeted study of catalogued clusters of galaxies (2002)
De Propris, Roberto, Couch, Warrick J., Colless, Matthew, Dalton, Gavin B., Collins, Chris A., Baugh, Carlton, ...
We have carried out a study of known clusters within the 2dF Galaxy Redshift Survey (2dFGRS) observed areas and have identified 431 Abell, 173 APM and 343 EDCC clusters. Precise redshifts, velocity...
The 2dF Galaxy Redshift Survey: the bias of galaxies and the density of the Universe (2002)
Verde, Licia, Heavens, Alan F., Percival, Will J., Matarrese, Sabino, Baugh, Carlton, Bland-Hawthorn, Joss, ...
We compute the bispectrum of the 2dF Galaxy Redshift Survey (2dFGRS) and use it to measure the bias parameter of the galaxies. This parameter quantifies the strength of clustering of the galaxies...
Percival, Will J., Sutherland, William J., Peacock, John A., Baugh, Carlton, Bland-Hawthorn, Joss, Bridges, Terry J., ...
We constrain flat cosmological models with a joint likelihood analysis of a new compilation of data from the cosmic microwave background (CMB) and from the 2dF Galaxy Redshift Survey (2dFGRS)....
Lahav, Ofer, Bridle, Sarah, Percival, Will J., Peacock, John A., Efstathiou, George P., Baugh, Carlton, ...
We compare the amplitudes of fluctuations probed by the 2dF Galaxy Redshift Survey (2dFGRS) and by the latest measurements of the cosmic microwave background (CMB) anisotropies. By combining the...
New upper limit on the total neutrino mass from the 2 Degree Field Galaxy Redshift Survey (2002)
Elgaroy, O., Lahav, Ofer, Percival, Will J., Peacock, John A., Madgwick, Darren, Bridle, Sarah, ...
We constrain fν≡Ων/Ωm, the fractional contribution of neutrinos to the total mass density in the Universe, by comparing the power spectrum of fluctuations derived from the 2 Degree Field Galaxy...
Efstathiou, George P., Moody, Stephen J., Peacock, John A., Percival, Will J., Baugh, Carlton, Bland-Hawthorn, Joss, ...
We perform a joint likelihood analysis of the power spectra of the 2dF Galaxy Redshift Survey (2dFGRS) and the cosmic microwave background (CMB) anisotropies under the assumptions that the initial...
Norberg, Peder, Cole, Shaun, Baugh, Carlton, Frenk, Carlos S., Baldry, Ivan K., Bland-Hawthorn, Joss, ...
We use more than 110 500 galaxies from the 2dF Galaxy Redshift Survey (2dFGRS) to estimate the bJ-band galaxy luminosity function at redshift z = 0, taking account of evolution, the distribution of...
The 2dF Galaxy Redshift Survey: galaxy luminosity functions per spectral type (2002)
Madgwick, Darren S., Lahav, Ofer, Bland-Hawthorn, Joss, Bridges, Terry, Cannon, Russell, Colless, Matthew, ...
not available
Lahav, Ofer, Bridle, Sarah L., Colless, Matthew, Jackson, Carole, Peterson, Bruce A. (et Al.)
not available
Observational Tests of FRW World Models (2001)
Observational tests for the Cosmological Principle are reviewed. Assuming the FRW metric we then summarize estimates of cosmological parameters from various data sets, in particular the Cosmic...
Lahav, Ofer, Bridle, Sarah L., Percival, Will J., Peacock, John A., Efstathiou, George, Baugh, Carlton M., ...
We compare the amplitudes of fluctuations probed by the 2dF Galaxy Redshift Survey and by the latest measurements of the Cosmic Microwave Background anisotropies. By combining the 2dFGRS and CMB data...
Galaxy Spectral Types and Their Applications in the 2dFGRS (2001)
Madgwick, Darren S., Lahav, Ofer
The 2dF Galaxy Redshift Survey (2dFGRS) has already measured over 200,000 redshifts of nearby (median redshift z~0.1) galaxies. This is the single largest set of galaxy spectra ever collected. It...
Efstathiou, George, Moody, Stephen, Peacock, John A., Percival, Will J., Baugh, Carlton, Bland-Hawthorn, Joss, ...
We perform a joint likelihood analysis of the power spectra of the 2dF Galaxy Redshift Survey (2dFGRS) and the cosmic microwave background (CMB) anisotropies under the assumptions that the initial...
The 2dF Galaxy Redshift Survey: A targeted study of catalogued clusters of galaxies (2001)
De Propris, Roberto, Couch, Warrick, Colless, Matthew, Dalton, Gavin, Collins, Chris, Baugh, Carlton, ...
We have carried out a study of known clusters within the 2dF Galaxy Redshift Survey (2dFGRS) observed areas and have identified 431 Abell, 173 APM and 343 EDCC clusters. Precise redshifts, velocity...
Do globular clusters time the Universe? (2001)
Gnedin, Oleg Y., Lahav, Ofer, Rees, Martin J.
Estimating the age of the Universe is an old problem. Rapid progress in observational cosmology in recent years has led to more accurate values of the fundamental parameters. The current most popular...
Large Surveys in Cosmology: The Changing Sociology (2001)
Galaxy redshift surveys and Cosmic Microwave Background experiments are undertaken with larger and larger teams, in a fashion reminiscent of particle physics experiments and the human genome...
The Age of the Universe from Joint Analysis of Cosmological Probes (2001)
Analyses of various cosmological probes, including the latest Cosmic Microwave Background anisotropies, the 2dF Galaxy Redshift Survey and Cepheid-calibrated distance indicators suggest that the age...
New Cosmological Data and the `Best-Fit' FRW Universe (2001)
Observational tests for the homogeneity of the Universe on large scales are reviewed. Assuming the Cosmological Principle we then estimate cosmological parameters by joint analysis of the Cosmic...
The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the universe (2001)
Percival, Will J., Baugh, Carlton M., Bland-Hawthorn, Joss, Bridges, Terry, Cannon, Russell, Cole, Shaun, ...
The 2dF Galaxy Redshift Survey has now measured in excess of 160000 galaxy redshifts. This paper presents the power spectrum of the galaxy distribution, calculated using a direct FFT-based technique....
The 2dF gravitational lens survey (2001)
Mortlock, Daniel J., Madgwick, Darren S., Lahav, Ofer
The 2 degree Field (2dF) galaxy redshift survey will involve obtaining approximately 2.5 x 10^5 spectra of objects previously identified as galaxy candidates on morphological grounds. Included in...
The 2dF galaxy redshift survey: near-infrared galaxy luminosity functions (2001)
Cole, Shaun, Norberg, Peder, Baugh, Carlton, Frenk, Carlos S., Bland-Hawthorn, Joss, Bridges, Terry J., ...
We combine the Two Micron All Sky Survey (2MASS) Extended Source Catalogue and the 2dF Galaxy Redshift Survey to produce an infrared selected galaxy catalogue with 17 173 measured redshifts. We use...
The 2dF Galaxy Redshift Survey: luminosity dependence of galaxy clustering (2001)
Norberg, Peder, Baugh, Carlton, Hawkins, Edward, Maddox, Stephen J., Peacock, John A., Cole, Shaun, ...
We investigate the dependence of the strength of galaxy clustering on intrinsic luminosity using the Anglo-Australian two degree field galaxy redshift survey (2dFGRS). The 2dFGRS is over an order of...
The 2dF Galaxy Redshift Survey: spectra and redshifts (2001)
Colless, Matthew, Dalton, Gavin B., Maddox, Stephen J., Sutherland, William J., Norberg, Peder, Cole, Shaun, ...
The 2dF Galaxy Redshift Survey (2dFGRS) is designed to measure redshifts for approximately 250 000 galaxies. This paper describes the survey design, the spectroscopic observations, the redshift...
The 2dF Galaxy Redshift Survey: the power spectrum and the matter content of the Universe (2001)
Percival, Will J., Baugh, Carlton, Bland-Hawthorn, Joss, Bridges, Terry J., Cannon, Russell D., Cole, Shaun, ...
The 2dF Galaxy Redshift Survey has now measured in excess of 160 000 galaxy redshifts. This paper presents the power spectrum of the galaxy distribution, calculated using a direct Fourier transform...
The 2dF Galaxy Redshift Survey: the number and luminosity density of galaxies (2001)
Cross, Nicholas J. G., Driver, Simon P., Couch, Warrick, Baugh, Carlton, Bland-Hawthorn, Joss, Bridges, Terry J., ...
We present the bivariate brightness distribution (BBD) for the 2dF Galaxy Redshift Survey (2dFGRS) based on a preliminary subsample of 45 000 galaxies. The BBD is an extension of the galaxy...
Objective classification of galaxy spectra using the information bottleneck method (2001)
Noam Slonim, Rachel Somerville, Naftali Tishby, Ofer Lahav
method
The 2dF Galaxy Redshift Survey: near-infrared galaxy luminosity functions (2001)
Cole, Shaun, Norberg, Peder, Baugh, Carlton, Frenk, Carlos S., Bland-Hawthorn, Joss, Bridges, Terry J., ...
We combine the Two Micron All Sky Survey (2MASS) Extended Source Catalogue and the 2dF Galaxy Redshift Survey to produce an infrared selected galaxy catalogue with 17 173 measured redshifts. We use...
The 2dF Galaxy Redshift Survey: luminosity dependence of galaxy clustering (2001)
Norberg, Peder, Baugh, Carlton, Hawkins, Edward, Maddox, Stephen J., Peacock, John A., Cole, Shaun, ...
We investigate the dependence of the strength of galaxy clustering on intrinsic luminosity using the Anglo-Australian two degree field galaxy redshift survey (2dFGRS). The 2dFGRS is over an order of...
The 2dF Galaxy Redshift Survey: spectra and redshifts (2001)
Colless, Matthew, Dalton, Gavin B., Maddox, Stephen J., Sutherland, William J., Norberg, Peder, Cole, Shaun, ...
The 2dF Galaxy Redshift Survey (2dFGRS) is designed to measure redshifts for approximately 250 000 galaxies. This paper describes the survey design, the spectroscopic observations, the redshift...
The 2dF Galaxy Redshift Survey: the power spectrum and the matter content of the Universe (2001)
Percival, Will J., Baugh, Carlton, Bland-Hawthorn, Joss, Bridges, Terry J., Cannon, Russell D., Cole, Shaun, ...
The 2dF Galaxy Redshift Survey has now measured in excess of 160 000 galaxy redshifts. This paper presents the power spectrum of the galaxy distribution, calculated using a direct Fourier transform...
The 2dF Galaxy Redshift Survey: the number and luminosity density of galaxies (2001)
Cross, Nicholas J. G., Driver, Simon P., Couch, Warrick, Baugh, Carlton, Bland-Hawthorn, Joss, Bridges, Terry J., ...
We present the bivariate brightness distribution (BBD) for the 2dF Galaxy Redshift Survey (2dFGRS) based on a preliminary subsample of 45 000 galaxies. The BBD is an extension of the galaxy...
Peacock, John A., Cole, Shaun, Norberg, Peder, Baugh, Carlton M., Bland-Hawthorn, Joss, Bridges, Terry, ...
The large-scale structure in the distribution of galaxies is thought to arise from the gravitational instability of small fluctuations in the initial density field of the Universe. A key test of this...
Cosmological Parameters and Hyper-Parameters: The Hubble Constant from Boomerang and Maxima (2000)
We generalise the procedure for joint estimation of cosmological parameters to allow freedom in the relative weights of various probes. This is done by including in the joint Likelihood function a...
The 2dF Galaxy Redshift Survey: Near Infrared Galaxy Luminosity Functions (2000)
Cole, Shaun, Norberg, Peder, Baugh, Carlton, Frenk, Carlos, Bland-Hawthorn, Joss, Bridges, Terry, ...
We combine the 2MASS extended source catalogue and the 2dFGRS to produce an IR selected galaxy catalogue with 17,173 measured redshifts. We use this extensive dataset to estimate the J and K-band...
Compression and Classification Methods for Galaxy Spectra in Large Redshift Surveys (2000)
Methods for compression and classification of galaxy spectra, which are useful for large galaxy redshift surveys (such as the SDSS, 2dF, 6dF and VIRMOS), are reviewed. In particular, we describe and...
The 2dF Galaxy Redshift Survey: The Number and Luminosity Density of Galaxies (2000)
Cross, Nicholas, Driver, Simon P., Couch, Warrick, Baugh, Carlton M., Bland-Hawthorn, Joss, Bridges, Terry, ...
We present the bivariate brightness distribution (BBD) for the 2dF Galaxy Redshift Survey (2dFGRS) based on a preliminary subsample of 45,000 galaxies. The BBD is an extension of the galaxy...
Clustering of Very Red Galaxies in the Las Campanas IR Survey (2000)
McCarthy, Patrick, Carlberg, Ray, Marzke, Ron, Chen, Hsiao-Wen, Firth, Andrew, McMahon, Richard, ...
We report results from the first 1000 square arc-minutes of the Las Campanas IR survey. We have imaged 1 square degree of high latitude sky in six distinct fields to a 5-sigma H-band depth of 20.5...
Constraints on Cosmological Anisotropy out to z=1 from Supernovae Ia (2000)
Kolatt, Tsafrir S., Lahav, Ofer
A combined sample of 79 high and low redshift supernovae Ia (SNe) is used to set constraints on the degree of anisotropy in the Universe out to $z\simeq1$. First we derive the global most probable...
The Universe behind the Milky Way (2000)
Kraan-Korteweg, Renee C., Lahav, Ofer
Due to the foreground extinction of the Milky Way, galaxies appear increasingly fainter the closer they lie to the Galactic Equator, creating a "zone of avoidance" of about 25% in the distribution of...
Observational Tests for the Cosmological Principle and World Models (2000)
We review observational tests for the homogeneity of the Universe on large scales. Redshift and peculiar velocity surveys, radio sources, the X-Ray Background, the Lyman-$\alpha$ forest and the...
Objective Classification of Galaxy Spectra using the Information Bottleneck Method (2000)
Noam Slonim, Rachel Somerville, Naftali Tishby, Ofer Lahav
A new method for classication of galaxy spectra is presented, based on a recently introduced information theoretical principle, the information bottleneck. For any desired number of classes, galaxies...
Massive Lossless Data Compression and Multiple Parameter Estimation from Galaxy Spectra (1999)
Heavens, Alan, Jimenez, Raul, Lahav, Ofer
We present a method for radical linear compression of datasets where the data are dependent on some number $M$ of parameters. We show that, if the noise in the data is independent of the parameters,...
Testing Homogeneity on Large Scales (1999)
We review observational tests for the homogeneity of the Universe on large scales. Redshift and peculiar velocity surveys, radio sources, the X-Ray Background, the Lyman-alpha forest and the Cosmic...
The Ly-alpha forest in a truncated hierarchical structure formation (1999)
The Ly-alpha forest provides important constraints on the smoothness of the universe on large scales. We calculate the flux distribution along line-of-sight to quasars in a universe made of randomly...
The 2dF Galaxy Redshift Survey: spectral types and luminosity functions (1999)
Folkes, Simon, Ronen, Shai, Price, Ian, Lahav, Ofer, Colless, Matthew, Couch, Warrick, ...
We describe the 2dF Galaxy Redshift Survey (2dFGRS) and the current status of the observations. In this exploratory paper, we apply a principal component analysis to a preliminary sample of 5869...
The 2dF Galaxy Redshift Survey: spectral types and luminosity functions (1999)
Folkes, Simon, Ronen, Shai, Price, Ian, Lahav, Ofer, Colless, Matthew, Couch, Warrick, ...
We describe the 2dF Galaxy Redshift Survey (2dFGRS) and the current status of the observations. In this exploratory paper, we apply a principal component analysis to a preliminary sample of 5869...
The 2dF Galaxy Redshift Survey: spectral types and luminosity functions (1999)
Folkes, Simon, Ronen, Shai, Price, Ian, Lahav, Ofer, Colless, Matthew, Couch, Warrick, ...
We describe the 2dF Galaxy Redshift Survey (2dFGRS) and the current status of the observations. In this exploratory paper, we apply a principal component analysis to a preliminary sample of 5869...
The 2dF Galaxy Redshift Survey: spectral types and luminosity functions (1999)
Folkes, Simon, Ronen, Shai, Price, Ian, Lahav, Ofer, Colless, Matthew, Maddox, Stephen J., ...
We describe the 2dF Galaxy Redshift Survey (2dFGRS) and the current status of the observations. In this exploratory paper, we apply a principal component analysis to a preliminary sample of 5869...
The 2dF Galaxy Redshift Survey: spectral types and luminosity functions (1999)
Folkes, Simon, Ronen, Shai, Price, Ian, Lahav, Ofer, Colless, Matthew, Maddox, Stephen J., ...
We describe the 2dF Galaxy Redshift Survey (2dFGRS) and the current status of the observations. In this exploratory paper, we apply a principal component analysis to a preliminary sample of 5869...
The 2dF Galaxy Redshift Survey: spectral types and luminosity functions (1999)
Folkes, Simon, Ronen, Shai, Price, Ian, Lahav, Ofer, Colless, Matthew, Couch, Warrick, ...
We describe the 2dF Galaxy Redshift Survey (2dFGRS) and the current status of the observations. In this exploratory paper, we apply a principal component analysis to a preliminary sample of 5869...
We discuss cosmological inference from galaxy surveys, the X-Ray Background (XRB) and the Cosmic Microwave Background (CMB). We assume a family of Cold Dark Matter (CDM) models in a spatially flat...
How Smooth is the Universe on Large Scales ? (1998)
We review cosmological inference from optical and radio galaxy surveys, the X-Ray Background and the Cosmic Microwave Background. We focus on three topics: (i) First results from the 2dF galaxy...
Stochastic Nonlinear Galaxy Biasing (1998)
We propose a general formalism for galaxy biasing and apply it to methods for measuring cosmological parameters, such as regression of light versus mass, the analysis of redshift distortions,...
Cosmological Tests from the New Surveys (1998)
We review cosmological inference from galaxy surveys at low and high redshifts, with emphasis on new Southern sky surveys. We focus on several issues: (i) The importance of understanding selection...
The Large-Scale Smoothness of the Universe (1998)
Wu, Kelvin K. S., Lahav, Ofer, Rees, Martin J.
New measurements of galaxy clustering and background radiations provide improved constraints on the isotropy and homogeneity of the Universe on large scales. In particular, the angular distribution...
The Velocity Field Predicted by the Optical Redshift Survey (1998)
Baker, Jonathan E., Davis, Marc, Strauss, Michael A., Lahav, Ofer, Santiago, Basilio X.
We have used the Optical Redshift Survey (ORS; Santiago et al. 1995) to construct the gravity field due to fluctuations in the galaxy density field out to distances of 8000 km/s. At large scales...
Joint estimation of cosmological parameters from CMB and IRAS data (1998)
Webster, Matthew, Bridle, S. L., Hobson, M. P., Lasenby, A. N., Lahav, Ofer, Rocha, Graca
Observations of large scale structure (LSS) and the Cosmic Microwave Background (CMB) each place separate constraints on the values of cosmological parameters. We calculate a joint likelihood based...
Large Scale Fluctuations in the X-Ray Background (1998)
Treyer, Marie, Scharf, Caleb, Lahav, Ofer, Jahoda, Keith, Boldt, Elihu, Piran, Tsvi
We present an attempt to measure the large angular scale fluctuations in the X-Ray Background (XRB) from the HEAO1-A2 data, expressed in terms of spherical harmonics. We model the harmonic...
Searching for Large Scale Structure in Deep Radio Surveys (1997)
Baleisis, Audra, Lahav, Ofer, Loan, Andrew J., Wall, Jasper V.
(Abridged Abstract) We calculate the expected amplitude of the dipole and higher spherical harmonics in the angular distribution of radio galaxies. The median redshift of radio sources in existing...
Artificial Neural Networks as a Tool for Galaxy Classification (1996)
We describe an Artificial Neural Network (ANN) approach to classification of galaxy images and spectra. ANNs can replicate the classification of galaxy images by a human expert to the same degree of...
Summary Talk: Multi-Wavelength Sky Surveys (IAU179) (1996)
The summary talk of IAU179 'New Horizons from Multi-Wavelengths Sky Surveys', held in Baltimore in August 1996. First I summarize the highlights in different wavelengths as described in the oral...
Probing Density Fluctuations at Low and High Redshift (1996)
We discuss cosmological inference from galaxy surveys at low and high redshifts. Studies of optical and IRAS redshift surveys with median redshift ${\bar z} \sim 0.02$ yield measurements of the...
The X-Ray Background as a Probe of Density Fluctuations at High Redshift (1996)
Lahav, Ofer, Piran, Tsvi, Treyer, Marie A.
The X-Ray Background (XRB) probes structure on scales intermediate between those explored by local galaxy redshift surveys and by the COBE Microwave Background measurements. We predict the large...
Wiener Reconstruction of the IRAS 1.2Jy Galaxy Redshift Survey: Cosmographical Implications (1996)
Webster, Matthew, Lahav, Ofer, Fisher, Karl
We utilise the method of Wiener reconstruction with spherical harmonics and Bessel functions to recover the density and velocity fields from the IRAS 1.2Jy redshift survey. The results are robust to...
Hermit, Sune, Santiago, Basilio X., Lahav, Ofer, Strauss, Michael A., Davis, Marc, Dressler, Alan, ...
We study the clustering of galaxies in real and redshift space using the Optical Redshift Survey (ORS). We estimate the two point correlation function in redshift space, $\xi(s)$, for several...
Present and Future Galaxy Redshift Surveys: ORS, DOGS and 2dF (1996)
Three galaxy redshifts surveys and their analyses are discussed. (i) The recently completed Optical Redshift Survey (ORS) includes galaxies larger than 1.9 arcmin and/or brighter than $14.5^m$. It...
Santiago, Basilio X., Strauss, Michael A., Lahav, Ofer, Davis, Marc, Dressler, Alan, Huchra, John
We quantify the effects of Galactic extinction on the derived luminosity and diameter functions and on the density field of a redshift sample. Galaxy magnitudes are more affected by extinction than...
Galaxy Classification by Human Eyes and by Artificial Neural Networks (1995)
The rapid increase in data on galaxy images at low and high redshift calls for re-examination of the classification schemes and for new automatic objective methods. Here we present a classification...
Artificial Neural Networks as Non-Linear Extensions of Statistical Methods in Astronomy (1994)
We attempt to de-mistify Artificial Neural Networks (ANNs) by considering special cases which are related to other statistical methods common in Astronomy and other fields. In particular we show how...
Introduction: Why and How to Probe the Zone of Avoidance ? (1994)
The motivation and major ways for probing the Zone of Avoidance (ZOA) are reviewed. Galaxies hidden behind the ZOA may have important implications for the internal dynamics of the Local Group, for...
Wiener Reconstruction of All-Sky Spherical Harmonic Maps of the Large Scale Structure (1994)
A statistical method for reconstructing large scale structure behind the Zone of Avoidance is presented. It also corrects for shot-noise and for redshift distortion in galaxy surveys. The galaxy...
Fisher, Karl, Lahav, Ofer, Hoffman, Yehuda, Lynden-Bell, Donald, Zaroubi, Saleem
We present a new method for recovering the cosmological density, velocity, and potential fields from all-sky redshift catalogues. The method is based on an expansion of the fields in orthogonal...
The Cosmic X-ray Background -- IRAS galaxy Correlation and the Local X-ray Volume Emissivity (1994)
Miyaji, Takamitsu, Lahav, Ofer, Jahoda, Keith, Boldt, Elihu
We have cross-correlated the galaxies from the IRAS 2 Jy redshift survey sample and the 0.7 Jy projected sample with the all-sky cosmic X-ray background (CXB) map obtained from the HEAO-1 A2...
Wiener Filtering of the COBE DMR Data (1994)
Bunn, Emory F., Fisher, Karl B., Hoffman, Yehuda, Lahav, Ofer, Silk, Joseph, Zaroubi, Saleem
We derive an optimal linear filter to suppress the noise from the COBE DMR sky maps for a given power spectrum. We then apply the filter to the first-year DMR data, after removing pixels within...
Large-Scale Mass Distribution Behind the Galactic Plane (1994)
Kolatt, Tsafrir, Dekel, Avishai, Lahav, Ofer
We map the smoothed mass-density distribution in the Galactic zone of avoidance (zoa), within $6000\kms$ of the Local Group, using potent reconstruction from peculiar velocities of galaxies. The...
Spherical Harmonic Reconstruction of Cosmic Density and Velocity Fields (1993)
The orthonormal set of Spherical Harmonics provides a natural way of expanding whole sky redshift and peculiar velocity surveys.
Fisher, Karl B., Scharf, Caleb A., Lahav, Ofer
We present a formalism for analysing redshift distortions based on a spherical harmonic expansion of the density field. We use a maximum likelihood estimator for the combination of density and bias...
Anisotropies in the local universe. (1988)
Thesis (Ph. D.)--University of Cambridge, 1988.