Cunha, Carlos E., Lima, Marcos, Oyaizu, Hiroaki, Frieman, Joshua, Lin, Huan
In Lima et al. 2008 we presented a new method for estimating the redshift distribution, N(z), of a photometric galaxy sample, using photometric observables and weighted sampling from a spectroscopic...
Rozo, Eduardo, Rykoff, Eli S., Evrard, August, Becker, Matthew, McKay, Timothy, Wechsler, Risa H., ...
We measure the logarithmic scatter in mass at fixed richness for clusters in the maxBCG cluster catalog, an optically selected cluster sample drawn from SDSS imaging data. Our measurement is achieved...
Dilday, Benjamin, Kessler, Richard, Frieman, Joshua, Holtzman, Jon, Marriner, John, Miknaitis, Gajus, ...
Also archived in: arXiv:0801.3297 v3 Jul 21 2008
Two more candidate AM Canum Venaticorum (AM CVn) Binaries from the Sloan Digital Sky Survey (2008)
Anderson, Scott, Becker, Andrew, Haggard, Daryl, Prieto, Jose Luis, Knapp, Gillian, Sako, Masao, ...
Also archived in: arXiv:0802.2240 v1 Feb 15 2008
First-Year spectroscopy for the SDSS-II Supernova Survey (2008)
Zheng, Chen, Romani, Roger, Sako, Masao, Marriner, John, Bassett, Bruce, Becker, Andrew, ...
Also archived in: arXiv:0802.3220 v1 Feb 21 2008
Dark Energy and the Accelerating Universe (2008)
Frieman, Joshua, Turner, Michael, Huterer, Dragan
The discovery ten years ago that the expansion of the Universe is accelerating put in place the last major building block of the present cosmological model, in which the Universe is composed of 4%...
Estimating the Redshift Distribution of Faint Galaxy Samples (2008)
Lima, Marcos, Cunha, Carlos E., Oyaizu, Hiroaki, Frieman, Joshua, Lin, Huan, Sheldon, Erin S.
We present an empirical method for estimating the underlying redshift distribution N(z) of galaxy photometric samples from photometric observables. The method does not rely on photometric redshift...
The Sloan Digital Sky Survey-II Supernova Survey: search Algorithm and follow-up observations (2008)
Sako, Masao, Bassett, Bruce, Becker, Andrew, Cinabro, David, DeJongh, Fritz, Depoy, Darren, ...
Also archived in: arXiv:0708.2750 v2 Oct 19 2007
The Sloan Digital Sky Survey-II Supernova Survey: technical summary (2008)
Frieman, Joshua, Bassett, Bruce, Becker, Andrew, Choi, Changsu, Cinabro, David, DeJongh, Fritz, ...
Also archived in: arXiv:0708.2749 v1 Aug 21 2007
Photometric Redshift Error Estimators (2007)
Oyaizu, Hiroaki, Lima, Marcos, Cunha, Carlos E., Lin, Huan, Frieman, Joshua
Photometric redshift (photo-z) estimates are playing an increasingly important role in extragalactic astronomy and cosmology. Crucial to many photo-z applications is the accurate quantification of...
A Galaxy Photometric Redshift Catalog for the Sloan Digital Sky Survey Data Release 6 (2007)
Oyaizu, Hiroaki, Lima, Marcos, Cunha, Carlos E., Lin, Huan, Frieman, Joshua, Sheldon, Erin S.
We present and describe a catalog of galaxy photometric redshifts (photo-z's) for the Sloan Digital Sky Survey (SDSS) Data Release 6 (DR6). We use the Artificial Neural Network (ANN) technique to...
Modeling the three-point correlation function (2007)
Marin, Felipe, Wechsler, Risa, Frieman, Joshua, Nichol, Robert
We present new predictions for the galaxy three-point correlation function (3PCF) using high-resolution dissipationless cosmological simulations of a flat LCDM Universe which resolve galaxy-size...
Cosmological constraints from the SDSS Luminous Red Galaxies (2006)
Tegmark, Max, Eisenstein, Daniel, Strauss, Michael, Weinberg, David, Blanton, Michael, Frieman, Joshua, ...
Also archived in: arXiv:astro-ph/0608632 v2 Oct 30 2006
Primordial non-Gaussianity and Dark Energy constraints from Cluster Surveys (2006)
Sefusatti, Emiliano, Vale, Chris, Kadota, Kenji, Frieman, Joshua
Galaxy cluster surveys will be a powerful probe of dark energy. At the same time, cluster abundance is sensitive to any non-Gaussianity of the primordial density field. It is therefore possible that...
Eisenstein, Daniel, Zehavi, Idit, Hogg, David, Scoccimarro, Roman, Blanton, Michael, Nichol, Robert, ...
Also archived in: arXiv:astro-ph/0501171 v1 10 Jan 2005
Eisenstein, Daniel, Zehavi, Idit, Hogg, David, Scoccimarro, Roman, Blanton, Michael, Nichol, Robert, ...
Also archived in: arXiv:astro-ph/0501171 v1 10 Jan 2005
Distributions of Galaxy Spectral Types in the Sloan Digital Sky Survey (2004)
Yip, Ching-Wa, Connolly, Andrew, Szalay, Alex, Budavari, Tamas, SubbaRao, Mark, Frieman, Joshua, ...
We perform an objective classification of 170,000 galaxy spectra in the Sloan Digital Sky Survey (SDSS) using the Karhunen-Lo\`eve (KL) transform. With about one-sixth of the total set of galaxy...
Eigenspectra of the SDSS DR1 quasars (2004)
Yip, Ching-Wa, Connolly, Andrew, Berk, Daniel Vanden, Ma, Zhaoming, Frieman, Joshua, SubbaRao, Mark, ...
We construct eigenspectra from the DR1 quasars in the SDSS using the Karhunen-Lo\`eve (KL) transform (or Principal Component Analysis, PCA) in different redshift and luminosity bins. We find that the...
Ivezic, Zeljko, Menou, Kristen, Knapp, Gillian R., Strauss, Michael A., Lupton, Robert H., Vanden Berk, Daniel E., ...
We discuss the optical and radio properties of similar to30,000 FIRST (radio, 20 cm, sensitive to 1 mJy) sources positionally associated within 1."5 with a Sloan Digital Sky Survey (SDSS) (optical,...
Loop Corrections in Non-Linear Cosmological Perturbation Theory (1995)
Scoccimarro, Roman, Frieman, Joshua
Using a diagrammatic approach to Eulerian perturbation theory, we analytically calculate the variance and skewness of the density and velocity divergence induced by gravitational evolution from...
Adams, Fred, Bond, J. R., Freese, Katherine, Frieman, Joshua, Olinto, Angela
A pseudo-Nambu-Goldstone boson, with a potential of the form $V(\phi) = \Lambda^4[1 \pm \cos(\phi/f)], naturally gives rise to inflation if $f \sim M_{Pl}$ and $\Lambda \sim M_{GUT}$. We show how...