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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…