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Discovery of Two Gravitationally Lensed Quasars with Image Separations of 3 Arcseconds from the Sloan Digital Sky Survey
Masamune Oguri, Naohisa Inada, Joseph F. Hennawi +15
We report the discovery of two doubly-imaged quasars, SDSS J100128.61+502756.9 and SDSS J120629.65+433217.6, at redshifts of 1.838 and 1.789 and with image separations of 2.86'' an…
The Small-scale Clustering of Luminous Red Galaxies via Cross-Correlation Techniques
Daniel J. Eisenstein, Michael Blanton, Idit Zehavi +5
We present the small-scale (0.2h^{-1} to 7h^{-1} Mpc) cross-correlations between 32,000 luminous early-type galaxies and a reference sample of 16 million normal galaxies from the S…
The Intermediate-Scale Clustering of Luminous Red Galaxies
Idit Zehavi, Daniel J. Eisenstein, Robert C. Nichol +7
We report the intermediate-scale (0.3 to 40 Mpc/h) clustering of 35,000 luminous early-type galaxies at redshifts 0.16 to 0.44 from the Sloan Digital Sky Survey. We present the red…
Candidate Type II Quasars from the SDSS: III. Spectropolarimetry Reveals Hidden Type I Nuclei
Nadia L. Zakamska, Gary D. Schmidt, Paul S. Smith +7
We have conducted spectropolarimetry of 12 type II (obscured) quasar candidates selected from the spectroscopic database of the Sloan Digital Sky Survey based on their emission lin…
X-rays from the First Massive Black Holes
W. N. Brandt, C. Vignali, B. D. Lehmer +3
We briefly review some recent results from Chandra and XMM-Newton studies of the highest redshift (z > 4) active galactic nuclei (AGNs). Specific topics covered include radio-quiet…
Cosmic homogeneity demonstrated with luminous red galaxies
David W. Hogg, Daniel J. Eisenstein, Michael R. Blanton +4
We test the homogeneity of the Universe at with the Luminous Red Galaxy (LRG) spectroscopic sample of the Sloan Digital Sky Survey. First, the mean number of LRG…
Optically identified BL Lacertae objects from the Sloan Digital Sky Survey
Matthew J. Collinge, Michael A. Strauss, Patrick B. Hall +12
We present a sample of 386 BL Lacertae (BL Lac) candidates identified from 2860 deg^2 of the Sloan Digital Sky Survey (SDSS) spectroscopic database. The candidates are primarily se…
X-ray Insights Into Interpreting CIV Blueshifts and Optical/UV Continua
S. C. Gallagher, G. T. Richards, P. B. Hall +3
We present 0.5-8.0 keV Chandra observations of six bright quasars that represent extrema in quasar emission-line properties -- three quasars each with small and large blueshifts of…
Correlating the CMB with Luminous Red Galaxies : The Integrated Sachs-Wolfe Effect
Nikhil Padmanabhan, Christopher M. Hirata, Uros Seljak +3
We present a 2.5 sigma detection of the Integrated Sachs-Wolfe (ISW) effect and discuss the constraints it places on cosmological parameters. We cross-correlate microwave temperatu…
The Third Data Release of the Sloan Digital Sky Survey
K. Abazajian et al.
This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through June 2003, includes imaging data in five bands ov…
A New Milky Way Companion: Unusual Globular Cluster or Extreme Dwarf Satellite?
Beth Willman, Michael R. Blanton, Andrew A. West +6
We report the discovery of SDSSJ1049+5103, an overdensity of resolved blue stars at (α_{2000}, δ_{2000}) = (162.343, 51.051). This object appears to be an old, metal-poor stellar s…
NYU-VAGC: a galaxy catalog based on new public surveys
Michael R. Blanton, David J. Schlegel, Michael A. Strauss +12
Here we present the New York University Value-Added Galaxy Catalog (NYU-VAGC), a catalog of local galaxies (mostly below a redshift of about 0.3) based on a set of publicly-release…
Colors, magnitudes and velocity dispersions in early-type galaxies: Implications for galaxy ages and metallicities
M. Bernardi, R. K. Sheth, R. C. Nichol +2
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 co…
Efficient Photometric Selection of Quasars from the Sloan Digital Sky Survey: 100,000 z<3 Quasars from Data Release One
Gordon T. Richards, Robert C. Nichol, Alexander G. Gray +15
We present a catalog of 100,563 unresolved, UV-excess (UVX) quasar candidates to g=21 from 2099 deg^2 of the Sloan Digital Sky Survey (SDSS) Data Release One (DR1) imaging data. Ex…
An Empirical Algorithm for Broad-band Photometric Redshifts of Quasars from the Sloan Digital Sky Survey
Michael A. Weinstein, Gordon T. Richards, Donald P. Schneider +7
We present an empirical algorithm for obtaining photometric redshifts of quasars using 5-band Sloan Digital Sky Survey (SDSS) photometry. Our algorithm generates an empirical model…
The Fall of AGN and the Rise of Star-Forming Galaxies: A Close Look at the Chandra Deep Field X-ray Number Counts
F. E. Bauer, D. M. Alexander, W. N. Brandt +4
We investigate the X-ray number counts in the 1-2 Ms Chandra Deep Fields (CDFs) to determine the contributions of faint X-ray source populations to the extragalactic X-ray backgrou…
The Luminosity and Color Dependence of the Galaxy Correlation Function
I. Zehavi, Z. Zheng, D. H. Weinberg +24
We study the luminosity and color dependence of the galaxy 2-point correlation function in the Sloan Digital Sky Survey, starting from a sample of 200,000 galaxies over 2500 deg^2.…
Cosmology and the Halo Occupation Distribution from Small-Scale Galaxy Clustering in the Sloan Digital Sky Survey
Kevork Abazajian, Zheng Zheng, Idit Zehavi +8
We use the projected correlation function w_p(r_p) of a volume-limited subsample of the Sloan Digital Sky Survey (SDSS) main galaxy redshift catalogue to measure the halo occupatio…
Cosmological parameter analysis including SDSS Ly-alpha forest and galaxy bias: constraints on the primordial spectrum of fluctuations, neutrino mass, and dark energy
U. Seljak, A. Makarov, P. McDonald +18
We combine the constraints from the recent Ly-alpha forest and bias analysis of the SDSS with previous constraints from SDSS galaxy clustering, the latest supernovae, and WMAP . Co…
Cataclysmic Variables from SDSS III. The Third Year
Paula Szkody, Arne Henden, Oliver Fraser +17
This paper continues the series that identifies new cataclysmic variables found in the Sloan Digital Sky Survey. We present 36 cataclysmic variables and one possible symbiotic star…
Calibrating Photometric Redshifts of Luminous Red Galaxies
Nikhil Padmanabhan, Tamas Budavari, David J. Schlegel +20
We discuss the construction of a photometric redshift catalogue of Luminous Red Galaxies (LRGs) from the Sloan Digital Sky Survey (SDSS), emphasizing the principal steps necessary…
The Linear Theory Power Spectrum from the Lyman-alpha Forest in the Sloan Digital Sky Survey
P. McDonald, U. Seljak, R. Cen +12
We analyze the SDSS Ly-alpha forest P_F(k,z) measurement to determine the linear theory power spectrum. Our analysis is based on fully hydrodynamic simulations, extended using hydr…
The Clustering of AGN in the Sloan Digital Sky Survey
David A. Wake, Christopher J. Miller, Tiziana Di Matteo +6
We present the two--point correlation function (2PCF) of narrow-line active galactic nuclei (AGN) selected within the First Data Release of the Sloan Digital Sky Survey. Using a sa…
Dust Reddening in SDSS Quasars
Philip F. Hopkins, Michael A. Strauss, Patrick B. Hall +7
We explore the form of extragalactic reddening toward quasars using a sample of 9566 quasars with redshifts 0<z<2.2, and accurate optical colors from the Sloan Digital Sky Survey (…