Galaxy And Mass Assembly (GAMA): The input catalogue and star-galaxy separation (2009)
Baldry, I. K., Robotham, A. S. G., Hill, D. T., Driver, S. P., Liske, J., Norberg, P., ...
We describe the spectroscopic target selection for the Galaxy And Mass Assembly (GAMA) survey. The input catalogue is drawn from the Sloan Digital Sky Survey (SDSS) and UKIRT Infrared Deep Sky Survey...
Robotham, Aaron, Driver, S. P., Norberg, P., Baldry, I. K., Bamford, S. P., Hopkins, A. M., ...
A heuristic greedy algorithm is developed for efficiently tiling spatially dense redshift surveys. In its first application to the Galaxy and Mass Assembly (GAMA) redshift survey we find it rapidly...
Lampeitl, H., Nichol, R. C., Giannantonio, T., Shapiro, C., Bassett, B., ...
We present an analysis of the luminosity distances of Type Ia Supernovae from the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey in conjunction with other intermediate redshift (z97% level...
Superclustering at Redshift z = 0:54 (2009)
A. J. Connolly, A. S. Szalay, D. Koo, A. K. Romer, B. Holden, R. C. Nichol, ...
We present strong evidence for the existence of a supercluster at a redshift of z =0:54 in the direction of Selected Area 68. From the distribution of galaxies with spectroscopic redshifts we nd that...
Low Surface Brightness Galaxies in the Core of the Coma Cluster (2009)
M. P. Ulmer, G. M. Bernstein, D. R. Martin, R. C. Nichol, J. L. Pendleton, J. A. Tyson
We present the results of a search for low surface brightness galaxies (hereafter LSBs) in the Coma cluster. Bernstein et al. report on deep CCD observations in R of a 7: 0 5 7: 0 5 region in the...
Sollerman, J., Mörtsell, E., Davis, T. M., Blomqvist, M., Bassett, B., Becker, A. C., ...
We use the new SNe Ia discovered by the SDSS-II Supernova Survey together with additional supernova datasets as well as observations of the cosmic microwave background and baryon acoustic...
Darg, D. W., Kaviraj, S., Lintott, C. J., Schawinski, K., Sarzi, M., Bamford, S., ...
Following the study of Darg et al. (2009; hereafter D09a) we explore the environments, optical colours, stellar masses, star formation and AGN activity in a sample of 3003 pairs of merging galaxies...
Galaxy Zoo: the fraction of merging galaxies in the SDSS and their morphologies (2009)
Darg, D. W., Kaviraj, S., Lintott, C. J., Schawinski, K., Sarzi, M., Bamford, S., ...
We present the largest, most homogeneous catalogue of merging galaxies in the nearby universe obtained through the Galaxy Zoo project - an interface on the world-wide web enabling large-scale...
Wide-Field Astronomical Surveys in the Next Decade (2009)
Strauss, M. A., Tyson, J. A., Anderson, S. F., Axelrod, T. S., Becker, A. C., Bickerton, S. J., ...
Wide-angle surveys have been an engine for new discoveries throughout the modern history of astronomy, and have been among the most highly cited and scientifically productive observing facilities in...
A Search for the Most Massive Galaxies. II. Structure, Environment and Formation (2008)
Bernardi, M., Hyde, J. B., Fritz, A., Sheth, R. K., Gebhardt, K., Nichol, R. C.
We study a sample of 43 early-type galaxies, selected from the SDSS because they appeared to have velocity dispersion > 350 km/s. High-resolution photometry in the SDSS i passband using HRC-ACS on...
A Search for the Most Massive Galaxies. III. Global and Central Structure (2008)
Hyde, J. B., Bernardi, M., Sheth, R. K., Nichol, R. C.
We used the Advanced Camera for Surveys on board the Hubble Space Telescope to obtain high resolution i-band images of the centers of 23 single galaxies, which were selected because they have SDSS...
The 2dF-SDSS LRG and QSO survey: QSO clustering and the L-z degeneracy (2008)
Da Angela, J., Shanks, T., Croom, S. M., Weilbacher, P., Brunner, R. J., Couch, W.J., ...
We combine the QSO samples from the 2dF QSO Redshift Survey (2QZ) and the 2dF-SDSS LRG and QSO Survey (2SLAQ) in order to investigate the clustering of z 1.4 QSOs and measure the correlation function...
Dilday, Benjamin, Kessler, R., Frieman, J. A., Holtzman, J., Marriner, J., Miknaitis, G., ...
We present a measurement of the rate of type Ia supernovae (SNe Ia) from the first of three seasons of data from the SDSS-II Supernova Survey. For this measurement, we include 17 SNe Ia at redshift...
Wake, D.A., Sheth, R.K., Nichol, R.C., Baugh, C.M., Bland-Hawthorn, J., Colless, M., ...
We present an analysis of the small-to-intermediate scale clustering of samples of luminous red galaxies (LRGs) from the Sloan Digital Sky Survey (SDSS) and the 2dF-SDSS LRG and QSO Survey (2SLAQ)...
The 2dF-SDSS LRG and QSO survey: QSO clustering and the L-z degeneracy (2008)
Da Angela, J., Shanks, T., Croom, S.M., Weilbacher, P., Brunner, R.J., Couch, W.J., ...
We combine the quasi-stellar object (QSO) samples from the 2dF QSO Redshift Survey (2QZ) and the 2dF-Sloan Digital Sky Survey luminous red galaxy (LRG) and QSO Survey (2dF-SDSS LRG and QSO, hereafter...
The HST MDS Cluster Sample: Methodology and Data (2007)
Ostrander Nichol, E. J. Ostr, R. C. Nichol, K. U. Ratnatunga, R. E. Griffiths
We present a new, objectively selected, sample of galaxy overdensities detected in the Hubble Space Telescope Medium Deep Survey. These clusters/groups were found using an automated procedure which...
M. P. Ulmer, G. M. Bernstein, D. R. Martin, R. C. Nichol, J. L. Pendleton, J. A. Tyson
We present the results of a search for low surface brightness galaxies (hereafter LSBs) in the Coma cluster. Bernstein et al. report on deep CCD observations in R of a 7: 0
G. M. Bernstein, R. C. Nichol, J. A. Tyson, M. P. Ulmer, D. Wittman
We determine the luminosity function (LF) of galaxies in the core of the Coma cluster for MR \Gamma11:4 (assuming H 0 = 75 km s \Gamma1
The Sloan Digital Sky Survey-II Supernova Survey: Technical Summary (2007)
Frieman, Joshua A., Bassett, B., Becker, A., Choi, C., Cinabro, D., DeJongh, F., ...
The Sloan Digital Sky Survey-II (SDSS-II) has embarked on a multi-year project to identify and measure light curves for intermediate-redshift (0.05 < z < 0.35) Type Ia supernovae (SNe Ia) using...
The Sloan Digital Sky Survey-II Supernova Survey: Search Algorithm and Follow-up Observations (2007)
Sako, Masao, Bassett, B., Becker, A., Cinabro, D., DeJongh, F., Depoy, D. L., ...
The Sloan Digital Sky Survey-II Supernova Survey has identified a large number of new transient sources in a 300 sq. deg. region along the celestial equator during its first two seasons of a...
A Study of the Type Ia/IIn Supernova 2005gj from X-ray to the Infrared: Paper I (2007)
Prieto, J. L., Garnavich, P. M., Phillips, M. M., DePoy, D. L., Parrent, J., Pooley, D., ...
We present extensive ugrizYHJK photometry and optical spectroscopy of SN 2005gj obtained by the SDSS-II and CSP Supernova Projects, which give excellent coverage during the first 150 days after the...
Ross, N. P., Da Ângela, J., Shanks, T., Wake, D. A., Cannon, R. D., Edge, A. C., ...
We present a clustering analysis of luminous red galaxies (LRGs) using nearly 9000 objects from the final, three-year catalogue of the 2dF-SDSS LRG and QSO (2SLAQ) Survey. We measure the...
Ross, N. P., Da Ângela, J., Shanks, T., Wake, D. A., Cannon, R. D., Edge, A. C., ...
We present a clustering analysis of luminous red galaxies (LRGs) using nearly 9000 objects from the final, three-year catalogue of the 2dF-SDSS LRG and QSO (2SLAQ) Survey. We measure the...
The XMM--NEWTON Omega Project: I. The X-ray Luminosity - Temperature Relation at z>0.4 (2006)
H. Lumb, D., Bartlett, J.G., Romer, A.K., Blanchard, A., Burke, D.J., Collins, C.A., ...
We describe XMM-Newton Guaranteed Time observations of a sample of eight high redshift (0.45 < z < 0.62) clusters. The goal of these observations was to measure the luminosity and the temperature of...
Ross, Nicholas P., Da Angela, J., Shanks, T., Wake, David A., Cannon, Russell D., Edge, A. C., ...
We present a clustering analysis of Luminous Red Galaxies (LRGs) using nearly 9 000 objects from the final catalogue of the 2dF-SDSS LRG And QSO (2SLAQ) Survey. We measure the redshift-space...
The 2dF-SDSS LRG and QSO Survey: QSO clustering and the L-z degeneracy (2006)
Da Angela, J., Shanks, T., Croom, S. M., Weilbacher, P., Brunner, R. J., Couch, W. J., ...
We combine the QSO samples from the 2dF QSO Redshift Survey (2QZ) and the 2dF-SDSS LRG and QSO Survey (2SLAQ) in order to investigate the clustering of z~1.4 QSOs and measure the correlation...
The XMM--NEWTON Omega Project: I. The X-ray Luminosity - Temperature Relation at z>0.4 (2006)
H. Lumb, D., Bartlett, J.G., Romer, A.K., Blanchard, A., Burke, D.J., Collins, C.A., ...
We describe XMM-Newton Guaranteed Time observations of a sample of eight high redshift (0.45 < z < 0.62) clusters. The goal of these observations was to measure the luminosity and the temperature of...
The XMM--NEWTON Omega Project: I. The X-ray Luminosity - Temperature Relation at z>0.4 (2006)
H. Lumb, D., Bartlett, J.G., Romer, A.K., Blanchard, A., Burke, D.J., Collins, C.A., ...
We describe XMM-Newton Guaranteed Time observations of a sample of eight high redshift (0.45 < z < 0.62) clusters. The goal of these observations was to measure the luminosity and the temperature of...
Galaxy Star Formation as a function of Environment (2006)
F. J. Castander, M. Bernardi, D. G. Gilbank, P. L. Gómez, T. Goto, C. J. Miller, ...
Galaxy Star Formation as a function of Environment
Galaxy bimodality versus stellar mass and environment (2006)
Baldry, I. K., Balogh, M. L., Bower, R. G., Glazebrook, K., Nichol, R. C., Bamford, S. P., ...
We analyse a z
Wake, D. A., Nichol, R. C., Eisenstein, D. J., Loveday, J., Edge, A. C., Cannon, R., ...
We present new measurements of the luminosity function (LF) of Luminous Red Galaxies (LRGs) from the Sloan Digital Sky Survey (SDSS) and the 2dF-SDSS LRG and Quasar (2SLAQ) survey. We have carefully...
The 2dF-SDSS LRG and QSO (2SLAQ) Luminous Red Galaxy Survey (2006)
Cannon, R., Drinkwater, M., Edge, A., Eisenstein, D., Nichol, R. C., Outram, P., ...
We present a spectroscopic survey of almost 15,000 candidate intermediate-redshift Luminous Red Galaxies (LRGs) brighter than i=19.8, observed with 2dF on the Anglo-Australian Telescope. The targets...
Bernardi, M., Hyde, J. B., Sheth, R. K., Miller, C. J., Nichol, R. C.
The size-luminosity relation of early-type Brightest Cluster Galaxies (BCGs), R_e ~ L^0.88, is steeper than that for the bulk of the early-type galaxy population, for which R_e ~ L^0.68. In addition,...
The XMM Cluster Survey: A Massive Galaxy Cluster at z=1.45 (2006)
Stanford, S. A., Romer, A. K., Sabirli, K., Davidson, M., Hilton, M., Viana, P. T. P., ...
We report the discovery of XMMXCS J2215.9-1738, a massive galaxy cluster at z =1.45, which was found in the XMM Cluster Survey. The cluster candidate was initially identified as an extended X-ray...
The Clustering of Luminous Red Galaxies in the Sloan Digital Sky Survey Imaging Data (2006)
Padmanabhan, N., Schlegel, D. J., Seljak, U., Makarov, A., Bahcall, N. A., Blanton, M. R., ...
We present the 3D real space clustering power spectrum of a sample of \~600,000 luminous red galaxies (LRGs) measured by the Sloan Digital Sky Survey (SDSS), using photometric redshifts. This sample...
The Effect of Large-Scale Structure on the SDSS Galaxy Three-Point Correlation Function (2006)
Nichol, R. C., Sheth, R. K., Suto, Y., Gray, A. J., Kayo, I., Wechsler, R. H., ...
We present measurements of the normalised redshift-space three-point correlation function (Q_z) of galaxies from the Sloan Digital Sky Survey (SDSS) main galaxy sample. We have applied our "npt"...
Ota, N., Inada, N., Oguri, M., Mitsuda, K., Richards, G. T., Suto, Y., ...
We present results from Chandra observations of SDSS J1004+4112, a strongly lensed quasar system with a maximum image separation of 15". All four bright images of the quasar, as well as resolved...
A search for the most massive galaxies: Double Trouble? (2005)
Bernardi, M., Sheth, R. K., Nichol, R. C., Miller, C. J., Schlegel, D., Frieman, J., ...
We describe the results of a search for galaxies with large (> 350 km/s) velocity dispersions. The largest systems we have found appear to be the extremes of the early-type galaxy population:...
Examining the Effect of the Map-Making Algorithm on Observed Power Asymmetry in WMAP Data (2005)
Freeman, P. E., Genovese, C. R., Miller, C. J., Nichol, R. C., Wasserman, L.
We analyze first-year data of WMAP to determine the significance of asymmetry in summed power between arbitrarily defined opposite hemispheres, using maps that we create ourselves with software...
Evolution and environment of early-type galaxies (2005)
Bernardi, M., Nichol, R. C., Sheth, R. K., Miller, C. J., Brinkmann, J.
We study the photometric and spectral properties of 39320 early-type galaxies within the SDSS, as a function of both local environment and redshift. The distance to the nearest cluster of galaxies...
Adami, C., Ulmer, M. P., Romer, A. K., Nichol, R. C., Holden, B. P., Pildis, R. A.
We present the results of a set of simulations designed to quantify the selection function of the Bright SHARC survey for distant clusters. The statistical significance of the simulations relied on...
The XMM-Newton $\\Omega$ Project (2005)
Bartlett, J. G., Aghanim, N., Arnaud, M., Bernard, J. -Ph., Blanchard, A., Boer, M., ...
The abundance of high-redshift galaxy clusters depends sensitively on the matter density $\\OmM$ and, to a lesser extent, on the cosmological constant $\\Lambda$. Measurements of this abundance...
XMM-Newton observation of the distant (z=0.6) galaxy cluster RX J1120.1+4318 (2005)
Arnaud, M., Majerowicz, S., Lumb, D., Neumann, D. M., Aghanim, N., Blanchard, A., ...
We report on a 20 ksec XMM observation of the distant cluster RXJ1120.1+4318, discovered at z=0.6 in the SHARC survey. The cluster has a regular spherical morphology, suggesting it is in a relaxed...
Dynamical and content evolution of a sample of clusters from z~0 to z~0.5 (2005)
Adami, C., Holden, B. P., Castander, F. J., Mazure, A., Nichol, R. C., Ulmer, M. P.
In this paper, we present an analysis of the dynamics and segregation of galaxies in rich clusters from z~0.32 to z~0.48 taken from the CFHT Optical PDCS (COP) survey and from the CNOC survey...
The CFH Optical PDCS survey (COP) I: The Data (2005)
Adami, C., Holden, B., Castander, F. J., Nichol, R. C., Mazure, A., Ulmer, M. P., ...
This paper presents and gives the COP (COP: CFHT Optical PDCS; CFHT: Canada-France-Hawaii Telescope; PDCS: Palomar Distant Cluster Survey) survey data. We describe our photometric and spectroscopic...
A Turn-over in the Galaxy Luminosity Function of the Coma Cluster Core? (2005)
Adami, C., Ulmer, M. P., Durret, F., Nichol, R. C., Mazure, A., Holden, B. P., ...
Our previous study of the faint end (R$\\leq$21.5) of the galaxy luminosity function (GLF) was based on spectroscopic data in a small region near the Coma cluster center. In this previous study Adami...
The 2dF-SDSS LRG and QSO Survey: The z (2005)
Richards, G. T., Croom, S. M., Anderson, S. F., Bland-Hawthorn, J., Boyle, B. J., De Propris, R., ...
We have used the 2dF instrument on the AAT to obtain redshifts of a sample of z
Eisenstein, D. J., Zehavi, I., Hogg, D. W., Scoccimarro, R., Blanton, M. R., Nichol, R. C., ...
We present the large-scale correlation function measured from a spectroscopic sample of 46,748 luminous red galaxies from the Sloan Digital Sky Survey. The survey region covers 0.72 h^{-3} Gpc^3 over...
The SDSS u-band Galaxy Survey: Luminosity functions and evolution (2005)
Baldry, I. K., Glazebrook, K., Budavari, T., Eisenstein, D. J., Annis, J., Bahcall, N. A., ...
We construct and analyze a u-band selected galaxy sample from the SDSS Southern Survey, which covers 275 sq. deg. The sample includes 43223 galaxies with spectroscopic redshifts in the range 0.005
The sloan digital sky survey quasar catalog - III. Third data release (2005)
Schneider, Donald P., Hall, Patrick B., Richards, Gordon T., Vanden Berk, Daniel E., Anderson, Scott F., Fan, Xiaohui, ...
Swinbank, A. M., Balogh, M. L., Bower, R. G., Hau, G. K. T., Allington-Smith, J. R., Nichol, R. C., ...
In this paper we present the three-dimensional dynamics of the galaxy SDSS J101345.39+011613.66, selected for its unusually strong Balmer absorption lines [W0(Hδ) = 7.5 Å]. Using the Gemini...
Swinbank, A. M., Balogh, M. L., Bower, R. G., Hau, G. K. T., Allington-Smith, J. R., Nichol, R. C., ...
In this paper we present the three-dimensional dynamics of the galaxy SDSS J101345.39+011613.66, selected for its unusually strong Balmer absorption lines [W0(Hδ) = 7.5 Å]. Using the Gemini...
Color bimodality: Implications for galaxy evolution (2004)
Baldry, I. K., Balogh, M. L., Bower, R., Glazebrook, K., Nichol, R. C.
We use a sample of 69726 galaxies from the SDSS to study the variation of the bimodal color-magnitude (CM) distribution with environment. Dividing the galaxy population by environment (Sigma_5) and...
Bernardi, M., Sheth, R. K., Nichol, R. C., Schneider, D. P., Brinkmann, J.
We present an analysis of the color-magnitude-velocity dispersion relation for a sample of 39320 early-type galaxies within the Sloan Digital Sky Survey. We demonstrate that the color-magnitude...
RXJ0256.5+0006: a merging cluster of galaxies at z=0.36 observed with XMM-Newton (2004)
Majerowicz, S., Neumann, D. M., Romer, A. K., Nichol, R. C., Burke, D. J., Collins, C. A.
(abridged) We present a study based on XMM data of RX J0256.5+0006, a medium distant (z=0.36) galaxy cluster found in the Bright SHARC catalog. The intracluster medium shows a bimodal structure: one...
The XMM--NEWTON Omega Project: I. The X-ray Luminosity - Temperature Relation at z>0.4 (2004)
H. Lumb, D., Bartlett, J.G., Romer, A.K., Blanchard, A., Burke, D.J., Collins, C.A., ...
We describe XMM-Newton Guaranteed Time observations of a sample of eight high redshift (0.45 < z < 0.62) clusters. The goal of these observations was to measure the luminosity and the temperature of...
The XMM--NEWTON Omega Project: I. The X-ray Luminosity - Temperature Relation at z>0.4 (2004)
H. Lumb, D., Bartlett, J.G., Romer, A.K., Blanchard, A., Burke, D.J., Collins, C.A., ...
We describe XMM-Newton Guaranteed Time observations of a sample of eight high redshift (0.45 < z < 0.62) clusters. The goal of these observations was to measure the luminosity and the temperature of...
A large sample of double-peaked Hα lines and AGN accretion disks (2004)
Strateva, I. V., Strauss, M. A., Hao, L., Schlegel, D. J., Hall, P. B., Gunn, J. E., ...
Actively Star Forming Elliptical Galaxies at Low Redshifts in the Sloan Digital Sky Survey (2003)
Fukugita, Masataka, Nakamura, Osamu, Turner, Edwin L., Helmboldt, Joe, Nichol, R. C.
We report discovery of actively star forming elliptical galaxies in a morphologically classified sample of bright galaxies at a low redshift obtained from the Sloan Digital Sky Survey. The emission...
A Gravitationally Lensed Quasar with Quadruple Images Separated by 14.62 Arcseconds (2003)
Inada, N., Oguri, M., Pindor, B., Hennawi, J. F., Chiu, K., Zheng, W., ...
Gravitational lensing is a powerful tool for the study of the distribution of dark matter in the Universe. The cold-dark-matter model of the formation of large-scale structures predicts the existence...
Oguri, M., Inada, N., Keeton, C. R., Pindor, B., Hennawi, J. F., Gregg, M. D., ...
We study the recently discovered gravitational lens SDSS J1004+4112, the first quasar lensed by a cluster of galaxies. It consists of four images with a maximum separation of 14.62''. The system has...
The XMM--NEWTON Omega Project: I. The X-ray Luminosity - Temperature Relation at z>0.4 (2003)
Lumb, D. H., Bartlett, J. G., Romer, A. K., Blanchard, A., Burke, D. J., Collins, C. A., ...
(abridged) We describe XMM-Newton Guaranteed Time observations of a sample of eight high redshift (0.45
The Ensemble Photometric Variability of ~25000 Quasars in the Sloan Digital Sky Survey (2003)
Berk, D. E. Vanden, Wilhite, B. C., Kron, R. G., Anderson, S. F., Brunner, R. J., Hall, P. B., ...
Using a sample of over 25000 spectroscopically confirmed quasars from the Sloan Digital Sky Survey, we show how quasar variability in the rest frame optical/UV regime depends upon rest frame time...
Quantifying the bimodal color-magnitude distribution of galaxies (2003)
Baldry, I. K., Glazebrook, K., Brinkmann, J., Ivezic, Z., Lupton, R. H., Nichol, R. C., ...
We analyse the bivariate distribution, in color versus absolute magnitude (u-r vs. M_r), of a low redshift sample of galaxies from the Sloan Digital Sky Survey (SDSS; 2400 deg^2, 0.004
Physical Evidence for Dark Energy (2003)
Scranton, R., Connolly, A. J., Nichol, R. C., Stebbins, A., Szapudi, I., Eisenstein, D. J., ...
We present measurements of the angular cross-correlation between luminous red galaxies from the Sloan Digital Sky Survey and the cosmic microwave background temperature maps from the Wilkinson...
Star formation rate indicators in the Sloan Digital Sky Survey (2003)
Hopkins, A. M., Miller, C. J., Nichol, R. C., Connolly, A. J., Bernardi, M., Gomez, P. L., ...
The Sloan Digital Sky Survey (SDSS) first data release provides a database of 106000 unique galaxies in the main galaxy sample with measured spectra. A sample of star-forming (SF) galaxies are...
An Initial Survey of White Dwarfs in the Sloan Digital Sky Survey (2003)
Harris, H. C., Liebert, J., Kleinman, S. J., Nitta, A., Anderson, S. F., Knapp, G. R., ...
An initial assessment is made of white dwarf and hot subdwarf stars observed in the Sloan Digital Sky Survey. In a small area of sky (190 square degrees), observed much like the full survey will be,...
Red and Reddened Quasars in the Sloan Digital Sky Survey (2003)
Richards, Gordon T., Hall, Patrick B., Berk, Daniel E. Vanden, Strauss, Michael A., Schneider, Donald P., Weinstein, Michael A., ...
We investigate the continuum and emission line properties of 4576 SDSS quasars as a function of their optical/UV SEDs. The optical/UV color distribution of our sample is roughly Gaussian, but with a...
Galaxy Star Formation as a function of Environment (2003)
Balogh , M. L., Bernardi , M., Bower , R. G., Castander , F. J., Connolly , A. J., Gilbank , D. G., ...
A Joint Sunyaev-Zel'dovich Effect and X-ray Analysis of Abell 3667 (2002)
Cantalupo, C. M., Romer, A. K., Peterson, J. B., Gomez, P., Griffin, G., Newcomb, M., ...
We present a 40GHz (7.5 mm) raster scan image of a 3.6x2 degree region centered on the low redshift (z=0.055) cluster of galaxies Abell 3667. The cluster was observed during the Antarctic winter of...
The Galaxy Luminosity Function and Luminosity Density at Redshift z=0.1 (2002)
Blanton, Michael R., Hogg, David W., Brinkmann, J., Connolly, Andrew J., Csabai, Istvan, Bahcall, Neta A., ...
Using a catalog of 147,986 galaxy redshifts and fluxes from the Sloan Digital Sky Survey (SDSS) we measure the galaxy luminosity density at z=0.1 in five optical bandpasses corresponding to the SDSS...
The Broad-band Optical Properties of Galaxies with Redshifts 0.0 < z < 0.2 (2002)
Blanton, M. R., Hogg, D. W., Bahcall, N. A., Baldry, I. K., Brinkmann, J., Csabai, I., ...
Using photometry and spectroscopy of 144,609 galaxies from the Sloan Digital Sky Survey, we present bivariate distributions of pairs of seven galaxy properties: four optical colors, surface...
XMM-Newton observation of the distant (z=0.6) galaxy cluster RX J1120.1+4318 (2002)
Arnaud, M., Majerowicz, S., Lumb, D., Neumann, D. M., Aghanim, N., Blanchard, A., ...
We report on a 20 ksec XMM observation of the distant cluster RXJ1120.1+4318, discovered at z=0.6 in the SHARC survey. The cluster has a regular spherical morphology, suggesting it is in a relaxed...
XMM-Newton observation of the distant (z=0.6) galaxy cluster RX J1120.1+4318 (2002)
Arnaud, M., Majerowicz, S., Lumb, D., Neumann, D. M., Aghanim, N., Blanchard, A., ...
We report on a 20 ksec XMM observation of the distant cluster RXJ1120.1+4318, discovered at z=0.6 in the SHARC survey. The cluster has a regular spherical morphology, suggesting it is in a relaxed...
XMM-Newton observation of the distant (z=0.6) galaxy cluster RX J1120.1+4318 (2002)
Arnaud, M., Majerowicz, S., Lumb, D., Neumann, D. M., Aghanim, N., Blanchard, A., ...
We report on a 20 ksec XMM observation of the distant cluster RXJ1120.1+4318, discovered at z=0.6 in the SHARC survey. The cluster has a regular spherical morphology, suggesting it is in a relaxed...
The Sloan Digital Sky Survey Quasar Catalog. I. Early data release (2002)
Schneider, Donald P., Richards, Gordon T., Fan, Xiaohui, Hall, Patrick B., Strauss, Michael A., Vanden Berk, Daniel E., ...
We present the first edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog consists of the 3814 objects ( 3000 discovered by the SDSS) in the initial SDSS public data release...
Cataclysmic variables from the Sloan Digital Sky Survey. I. The first results (2002)
Szkody, Paula, Anderson, Scott F., Agüeros, Marcel, Covarrubias, Ricardo, Bentz, Misty, Hawley, Suzanne, ...
The commissioning year of the Sloan Digital Sky Survey (SDSS) has demonstrated that many cataclysmic variables (CVs) have been missed in previous surveys with brighter limits. We report the...
Sloan Digital Sky Survey: Early data release (2002)
Stoughton, Chirs, Lupton, Rpbert H., Bernardi, Mariangela, Blanton, Michael R., Burles, Scott, Castander, Francsico J., ...
The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere and collect spectra of 10 6 galaxies, 100,000...
Galaxy clustering in early Sloan Digital Sky Survey redshift data (2002)
Zehavi, I., Blanton, M. R., Frieman, J. A., Weinberg, D. H., Mo, H. J., Strauss, M. A., ...
We present the first measurements of clustering in the Sloan Digital Sky Survey (SDSS) galaxy redshift survey. Our sample consists of 29,300 galaxies with redshifts 5700 km s(-1) less than or equal...
Sloan Digital Sky Survey: Early data release (2002)
Stoughton, C., Lupton, R. H., Bernardi, M., Blanton, M. R., Burles, S., Castander, F. J., ...
The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere and collect spectra of 10 6 galaxies, 100,000...
Sloan Digital Sky Survey: Early Data Release (2002)
Stoughton, Chris, Lupton, Robert H., Bernardi, Mariangela, Blanton, Michael R., Burles, Scott, Castander, Francisco J., ...
Newberg, Heidi Jo, Yanny, Brian, Rockosi, Connie, Grebel, Eva K., Rix, Hans-Walter, Brinkmann, Jon, ...
Unusual Broad Absorption Line Quasars from the Sloan Digital Sky Survey (2002)
Hall, Patrick B., Anderson, Scott F., Strauss, Michael A., York, Donald G., Richards, Gordon T., Fan, Xiaohui, ...
Fairley, B. W., Jones, L. R., Wake, D. A., Collins, C. A., Burke, D. J., Nichol, R. C., ...
We present initial results from a wide-field, multi-colour imaging project, designed to study galaxy evolution in X-ray selected clusters at intermediate (z~0.25) and high redshifts (z~0.5). In this...
Tracing Cosmic Evolution with an XMM Serendipitous Cluster Survey (2001)
Romer, A. K., Viana, P. T. P., Collins, C. A., Liddle, A. R., Mann, R. G., Nichol, R. C.
This paper describes updated predictions, as a function of the underlying cosmological model, for a serendipitous galaxy cluster survey that we plan to conduct with the {\em XMM-Newton} X-ray...
A new source detection algorithm using FDR (2001)
Hopkins, A. M., Miller, C. J., Connolly, A. J., Genovese, C., Nichol, R. C., Wasserman, L.
The False Discovery Rate (FDR) method has recently been described by Miller et al (2001), along with several examples of astrophysical applications. FDR is a new statistical procedure due to...
Cataclysmic Variables from SDSS I. The First Results (2001)
Szkody, P., Anderson, S. F., Agueros, M., Covarrubias, R., Bentz, M., Hawley, S., ...
The commissioning year of the Sloan Digital Sky Survey has demonstrated that many cataclysmic variables have been missed in previous surveys with brighter limits. We report the identification of 22...
Nichol, R. C., Chong, S., Connolly, A. J., Davies, S., Genovese, C., Hopkins, A. M., ...
I present here a review of past and present multi-disciplinary research of the Pittsburgh Computational AstroStatistics (PiCA) group. This group is dedicated to developing fast and efficient...
Large-Scale Structure Studies with Clusters of Galaxies (2001)
I present here a review of Large-Scale Structure (LSS) studies using clusters of galaxies. First, I re-evaluate the `pros' and `cons' of using clusters for such studies, especially in this era of...
Eisenstein, D. J., Annis, J., Gunn, J. E., Szalay, A. S., Connolly, A. J., Nichol, R. C., ...
We describe the target selection and resulting properties of a spectroscopic sample of luminous, red galaxies (LRG) from the imaging data of the Sloan Digital Sky Survey (SDSS). These galaxies are...
Galaxy Mass and Luminosity Scaling Laws Determined by Weak Gravitational Lensing (2001)
McKay, Timothy A., Sheldon, Erin Scott, Racusin, Judith, Fischer, Philippe, Seljak, Uros, Stebbins, Albert, ...
We present new measurements of scaling laws relating the luminosity of galaxies to the amplitude and shape of their dark matter halos. Early imaging and spectroscopic data from the Sloan Digital Sky...
The XMM-Newton $\Omega$ Project (2001)
Bartlett, J. G., Aghanim, N., Arnaud, M., Bernard, J. -Ph., Blanchard, A., Boer, M., ...
The abundance of high-redshift galaxy clusters depends sensitively on the matter density $\OmM$ and, to a lesser extent, on the cosmological constant $\Lambda$. Measurements of this abundance...
A New Very Cool White Dwarf Discovered by the Sloan Digital Sky Survey (2001)
Harris, H. C., Hansen, B. M. S., Liebert, J., Berk, D. E. Vanden, Anderson, S. F., Knapp, G. R., ...
Early data taken during commissioning of the SDSS have resulted in the discovery of a very cool white dwarf. It appears to have stronger collision induced absorption from molecular hydrogen than any...
The XMM-Newton $\\Omega$ Project (2001)
Bartlett, J. G., Aghanim, N., Arnaud, M., Bernard, J. -Ph., Blanchard, A., Boer, M., ...
The abundance of high-redshift galaxy clusters depends sensitively on the matter density $\\OmM$ and, to a lesser extent, on the cosmological constant $\\Lambda$. Measurements of this abundance...
The XMM-Newton $\\Omega$ Project (2001)
Bartlett, J. G., Aghanim, N., Arnaud, M., Bernard, J. -Ph., Blanchard, A., Boer, M., ...
The abundance of high-redshift galaxy clusters depends sensitively on the matter density $\\OmM$ and, to a lesser extent, on the cosmological constant $\\Lambda$. Measurements of this abundance...
Dynamical and content evolution of a sample of clusters from z~0 to z~0.5 (2000)
Adami, C., Holden, B. P., Castander, F. J., Mazure, A., Nichol, R. C., Ulmer, M. P.
In this paper, we present an analysis of the dynamics and segregation of galaxies in rich clusters from z~0.32 to z~0.48 taken from the CFHT Optical PDCS (COP) survey and from the CNOC survey...
Discovery of a Close Pair of z = 4.25 Quasars from the Sloan Digital Sky Survey (2000)
Schneider, Donald P., Fan, Xiaohui, Strauss, Michael A., Gunn, James E., Richards, Gordon T., Knapp, G. R., ...
We report the discovery of a pair of z = 4.25 quasars with a separation of 33 arcseconds. The brighter of the two objects was identified as a high-redshift quasar candidate from Sloan Digital Sky...
The Edinburgh/Durham Southern Galaxy Catalogue - IX. The Galaxy Catalogue (2000)
Nichol, R. C., Collins, C. A., Lumsden, S. L.
We announce here the public availability of the Edinburgh/Durham Southern Galaxy Catalogue (EDSGC, http://www.edsgc.org). This objective galaxy catalogue was constructed using the COSMOS...
Fast Algorithms and Efficient Statistics: Density Estimation in Large Astronomical Datasets (2000)
Connolly, A. J., Genovese, C., Moore, A. W., Nichol, R. C., Schneider, J., Wasserman, L.
In this paper, we outline the use of Mixture Models in density estimation of large astronomical databases. This method of density estimation has been known in Statistics for some time but has not...
Nichol, R. C., Connolly, A. J., Moore, A. W., Schneider, J., Genovese, C., Wasserman, L.
We present initial results on the use of Mixture Models for density estimation in large astronomical databases. We provide herein both the theoretical and experimental background for using a mixture...
Adami, C., Ulmer, M. P., Romer, A. K., Nichol, R. C., Holden, B. P., Pildis, R. A.
We present the results of a set of simulations designed to quantify the selection function of the Bright SHARC survey for distant clusters. The statistical significance of the simulations relied on...
CFHT Optical PDCS Survey II: Evolution in the Space Density of Clusters of Galaxies (2000)
Holden, B. P., Adami, C., Nichol, R. C., Castander, F. J., Lubin, L. M., Romer, A. K., ...
We present the first dynamical study of the optically selected Palomar Distant Cluster Survey (PDCS). We show that eleven out of twelve PDCS clusters we observed are real over-densities of galaxies....
The CFH Optical PDCS survey (COP) I: The Data (2000)
Adami, C., Holden, B., Castander, F. J., Nichol, R. C., Mazure, A., Ulmer, M. P., ...
This paper presents and gives the COP (COP: CFHT Optical PDCS; CFHT: Canada-France-Hawaii Telescope; PDCS: Palomar Distant Cluster Survey) survey data. We describe our photometric and spectroscopic...
Adami, C., Ulmer, M. P., Romer, A. K., Nichol, R. C., Holden, B. P., Pildis, R. A.
We present the results of a set of simulations designed to quantify the selection function of the Bright SHARC survey for distant clusters. The statistical significance of the simulations relied on...
Dynamical and content evolution of a sample of clusters from z~0 to z~0.5 (2000)
Adami, C., Holden, B. P., Castander, F. J., Mazure, A., Nichol, R. C., Ulmer, M. P.
In this paper, we present an analysis of the dynamics and segregation of galaxies in rich clusters from z~0.32 to z~0.48 taken from the CFHT Optical PDCS (COP) survey and from the CNOC survey...
The CFH Optical PDCS survey (COP) I: The Data (2000)
Adami, C., Holden, B., Castander, F. J., Nichol, R. C., Mazure, A., Ulmer, M. P., ...
This paper presents and gives the COP (COP: CFHT Optical PDCS; CFHT: Canada-France-Hawaii Telescope; PDCS: Palomar Distant Cluster Survey) survey data. We describe our photometric and spectroscopic...
Adami, C., Ulmer, M. P., Romer, A. K., Nichol, R. C., Holden, B. P., Pildis, R. A.
We present the results of a set of simulations designed to quantify the selection function of the Bright SHARC survey for distant clusters. The statistical significance of the simulations relied on...
Dynamical and content evolution of a sample of clusters from z~0 to z~0.5 (2000)
Adami, C., Holden, B. P., Castander, F. J., Mazure, A., Nichol, R. C., Ulmer, M. P.
In this paper, we present an analysis of the dynamics and segregation of galaxies in rich clusters from z~0.32 to z~0.48 taken from the CFHT Optical PDCS (COP) survey and from the CNOC survey...
The CFH Optical PDCS survey (COP) I: The Data (2000)
Adami, C., Holden, B., Castander, F. J., Nichol, R. C., Mazure, A., Ulmer, M. P., ...
This paper presents and gives the COP (COP: CFHT Optical PDCS; CFHT: Canada-France-Hawaii Telescope; PDCS: Palomar Distant Cluster Survey) survey data. We describe our photometric and spectroscopic...
The Local Space Density of Optically-Selected Clusters of Galaxies (1999)
Bramel, D. A., Nichol, R. C., Pope, A. C.
Abridged] We present here new results on the space density of rich, optically-selected, clusters of galaxies at low redshift (z= 50 (or Lambda_cl >= 10). We have used extensive Monte Carlo...
CFHT AO Imaging of the CLASS Gravitational Lens System B1359+154 (1999)
Rusin, D., Hall, P. B., Nichol, R. C., Marlow, D. R., Richards, A. M. S., Myers, S. T.
We present adaptive optics imaging of the CLASS gravitational lens system B1359+154 obtained with the Canada-France-Hawaii Telescope (CFHT) in the infrared K band. The observations show at least...
A Turn-over in the Galaxy Luminosity Function of the Coma Cluster Core? (1999)
Adami, C., Ulmer, M. P., Durret, F., Nichol, R. C., Mazure, A., Holden, B. P., ...
Our previous study of the faint end (R$\leq$21.5) of the galaxy luminosity function (GLF) was based on spectroscopic data in a small region near the Coma cluster center. In this previous study Adami...
Simulations Applied to the Bright SHARC XCLF: Results and Implications (1999)
Ulmer, M. P., Adami, C., Pildis, R., Romer, A. K., Nichol, R. C., Holden, B. P.
We have performed simulations of the effectiveness of the Serendipitous High-redshift Archival ROSAT Cluster (SHARC) survey for various model universes. We find, in agreement with work based on a...
Holden, B. P., Nichol, R. C., Romer, A. K., Metevier, A., Postman, M., Ulmer, M. P, ...
We have conducted a redshift survey of sixteen cluster candidates from the Palomar Distant Cluster Survey (PDCS) to determine both the density of PDCS clusters and the accuracy of the estimated...
The Bright SHARC Survey: The Cluster Catalog (1999)
Romer, A. K, Nichol, R. C., Holden, B. P., Ulmer, M. P., Pildis, R. A., Merrelli, A. J., ...
We present the Bright SHARC (Serendipitous High-Redshift Archival ROSAT Cluster) Survey, which is an objective search for serendipitously detected extended X-ray sources in 460 deep ROSAT PSPC...
The Bright SHARC Survey: The X-ray Cluster Luminosity Function (1999)
Nichol, R. C., Romer, A. K., Holden, B. P., Ulmer, M. P., Pildis, R. A., Adami, C., ...
We present here initial results on the X-ray Cluster Luminosity Function (XCLF) from the Bright SHARC sample of distant X-ray clusters of galaxies. This sample is 97% complete in its optical...
A Turn-over in the Galaxy Luminosity Function of the Coma Cluster Core? (1999)
Adami, C., Ulmer, M. P., Durret, F., Nichol, R. C., Mazure, A., Holden, B. P., ...
Our previous study of the faint end (R$\\leq$21.5) of the galaxy luminosity function (GLF) was based on spectroscopic data in a small region near the Coma cluster center. In this previous study Adami...
A Turn-over in the Galaxy Luminosity Function of the Coma Cluster Core? (1999)
Adami, C., Ulmer, M. P., Durret, F., Nichol, R. C., Mazure, A., Holden, B. P., ...
Our previous study of the faint end (R$\\leq$21.5) of the galaxy luminosity function (GLF) was based on spectroscopic data in a small region near the Coma cluster center. In this previous study Adami...
A Bayesian Inference Analysis of the X-ray Cluster Luminosity-Temperature Relation (1998)
Reichart, D. E., Castander, F. J., Nichol, R. C.
We present a Bayesian inference analysis of the Markevitch (1998) and Allen & Fabian (1998) cooling flow corrected X-ray cluster temperature catalogs that constrains the slope and the evolution of...
The HST Medium Deep Survey Cluster Sample: Methodology and Data (1998)
Ostrander, E. J., Nichol, R. C., Ratnatunga, K. U., Griffiths, R. E.
We present a new, objectively selected, sample of galaxy overdensities detected in the Hubble Space Telescope Medium Deep Survey. These clusters/groups were found using an automated procedure which...
Deep probing of the Coma cluster (1998)
Adami, C., Nichol, R. C., Mazure, A., Durret, F., Holden, B., Lobo, C.
As a continuation of our study of the faint galaxy luminosity function in the Coma cluster of galaxies, we report here on the first spectroscopic observations of very faint galaxies (R $\le$ 21.5) in...
Reichart, D. E., Nichol, R. C., Castander, F. J., Burke, D. J., Romer, A. K., Holden, B. P., ...
From the Press-Schechter mass function and the empirical X-ray cluster luminosity-temperature (L-T) relation, we construct an X-ray cluster luminosity function that can be applied to the growing...
The Southern SHARC Survey: the z = 0.3 - 0.7 Cluster XLF (1997)
Burke, D. J., Collins, C. A., Sharples, R. M., Romer, A. K., Holden, B. P., Nichol, R. C.
We present the z = 0.3 - 0.7 cluster X-ray luminosity function (XLF) determined from the Southern SHARC (Serendipitous High-redshift Archival ROSAT Cluster) survey. Over the luminosity range L ~ (0.3...
X-ray Observations of Distant Optically Selected Cluster (1997)
Holden, B. P., Romer, A. K., Nichol, R. C., Ulmer, M. P.
We have measured fluxes or flux limits for 31 of the 79 cluster candidates in the Palomar Distant Cluster Survey (PDCS) using archival ROSAT/PSPC pointed observations. Our X-ray survey reaches a flux...
The Edinburgh-Durham Southern Galaxy Catalogue - VIII: The Cluster Galaxy Luminosity Function (1997)
Lumsden, S. L., Collins, C. A., Nichol, R. C., Eke, V. R., Guzzo, L.
We have re-examined the nature of the cluster galaxy luminosity function using the data from the Edinburgh-Durham Southern Galaxy Catalogue and the Edinburgh-Milano Redshift Survey. We derive a best...
A Search For Large-Scale Structure at High Redshift (1997)
Connolly, A. J., Szalay, A. S., Romer, A. K., Nichol, R. C., Holden, B., Koo, D., ...
We present new and exciting results on our search for large-scale structure at high redshift. Specifically, we have just completed a detailed analysis of the area surrounding the cluster CL0016+16...
No Evolution in the X-ray Cluster Luminosity Function out to z=0.7 (1997)
Romer, A. K., Nichol, R. C., Collins, C. A., Burke, D. J., Holden, B. H., Metevier, A., ...
In contrast to claims of strong negative evolution by other groups, we find no evidence for evolution of the X-ray cluster luminosity function out to z=0.7
On The Evolution of X-ray Clusters at High Redshift (1997)
Collins, C. A., Burke, D. J., Romer, A. K., Sharples, R. M., Nichol, R. C.
We report on the first results from a redshift survey of a flux-limited sample of X-ray clusters selected serendipitously from the ROSAT PSPC data archive. We spectroscopically confirm 15 clusters in...
Evolution in the X-ray Cluster Luminosity Function Revisited (1996)
Nichol, R. C., Holden, B. P., Romer, A. K., Ulmer, M. P., Burke, D. J., Collins, C. A.
(Shortened Abstract) We present new X-ray data taken from the ROSAT PSPC pointing archive for 21 clusters in the Einstein Extended Medium Sensitivity Survey (EMSS). We have supplemented these data...
Optical/Near-Infrared Observations of GRO J1744-28 (1996)
Cole, D. M., Berk, D. E. Vanden, Severson, S. A., Miller, M. C., Quashnock, J. M., Nichol, R. C., ...
We present results from a series of optical (g and r-band) and near-infrared (K'-band) observations of the region of the sky including the entire XTE and ROSAT error circles for the ``Bursting...
Superclustering at Redshift Z=0.54 (1996)
Connolly, A. J., Szalay, A. S., Koo, D. C., Romer, A. K., Holden, B., Nichol, R. C., ...
We present strong evidence for the existence of a supercluster at a redshift of z=0.54 in the direction of Selected Area 68. From the distribution of galaxies with spectroscopic redshifts we find...
Low Surface Brightness Galaxies in the Core of the Coma Cluster (1996)
Ulmer, M. P., Bernstein, G. M., Martin, D. R., Nichol, R. C., Pendleton, J. L., Tyson, J. A.
We present the results of a search for low surface brightness galaxies (hereafter LSBs) in the Coma cluster. Bernstein et al. report on deep CCD observations in R of a 7.5 by 7.5 arcminute region in...
A search for distant X-ray galaxy clusters (1995)
Burke, D. J., Collins, C. A., Nichol, R. C., Romer, A. K., Holden, B., Sharples, R. M., ...
We report on the progress of our search for serendipitous distant X-ray galaxy clusters in the ROSAT PSPC pointed observations archive. The initial aim of our work is to measure the X-ray luminosity...
Galactic extinction and Abell clusters (1995)
Nichol, R. C., Connolly, A. J.
In this paper, we present the results of comparing the angular distribution of Abell clusters with Galactic HI measurements. For most subsamples of clusters considered, their positions on the sky...
The Luminosity Function of the Coma Cluster Core for -25 (1995)
Bernstein, G. M., Nichol, R. C., Tyson, J. A., Ulmer, M. P., Wittman, D.
We determine the luminosity function (LF) of galaxies in the core of the Coma cluster for M_R
The EDSGC - VII: The Edinburgh-Milano Cluster Redshift Survey (1995)
Collins, C. A., Guzzo, L., Nichol, R. C., Lumsden, S. L.
We present the redshifts of the galaxies and galaxy clusters which form the Edinburgh--Milano (EM) cluster redshift survey. A total of 777 galaxy redshifts have been measured in 94 clusters extracted...
A search for distant X-ray galaxy clusters (1995)
Burke Collins, C. A. Collins, R. C. Nichol, A. K. Romer, B. Holden, R. M. Sharples, ...
. We report on the progress of our search for serendipitous distant X-ray galaxy clusters in the ROSAT PSPC pointed observations archive. The initial aim of our work is to measure the X-ray...
Cluster Alignments in the Edinburgh/Milano Cluster Redshift Survey (1994)
Martin, D. R., Nichol, R. C., Collins, C. A., Lumsden, S. A., Guzzo, L.
We present here the results of a statistical search for cluster alignments using the Edinburgh/Milano cluster redshift survey. This survey is a unique cluster database which has been objectively...
A Search for X-Ray Bright Distant Clusters of Galaxies (1994)
Nichol, R. C., Ulmer, M. P., Kron, R. G., Wirth, G. D., Koo, D. C.
We present the results of a search for X--ray luminous distant clusters of galaxies. We found extended X--ray emission characteristic of a cluster towards two of our candidate clusters of galaxies....