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Quasar Broad Absorption Line Variability on Multi-Year Time Scales
Robert R. Gibson, W. N. Brandt, Donald P. Schneider +1
We use quantitative metrics to characterize the variation of CIV 1549 A broad absorption lines (BALs) over 3--6 (rest-frame) years in a sample of 13 quasars at 1.7 <= z <= 2.8 and…
The Black Hole-Bulge Relationship in Luminous Broad-Line Active Galactic Nuclei and Host Galaxies
J. Shen, D. E. Vanden Berk, D. P. Schneider +1
We have measured the stellar velocity dispersions (σ_*) and estimated the central black hole (BH) masses for over 900 broad-line active galactic nuclei (AGNs) observed with the Slo…
On the variability of quasars: a link between Eddington ratio and optical variability?
B. C. Wilhite, R. J. Brunner, C. J. Grier +2
Repeat scans by the Sloan Digital Sky Survey (SDSS) of a 278 square degree stripe along the Celestial equator have yielded an average of over 10 observations each for nearly 8,000…
Radio galaxies in the 2SLAQ Luminous Red Galaxy survey: II. The stellar populations of radio-loud and radio-quiet LRGs
Helen M. Johnston, Elaine M. Sadler, Russell Cannon +3
We present an analysis of the optical spectra of a volume-limited sample of 375 radio galaxies at redshift 0.4<z<0.7 from the 2dF-SDSS Luminous Red Galaxy and QSO (2SLAQ) redshift…
Large-Scale Anisotropic Correlation Function of SDSS Luminous Red Galaxies
Teppei Okumura, Takahiko Matsubara, Daniel J. Eisenstein +4
We study the large-scale anisotropic two-point correlation function using 46,760 luminous red galaxies at redshifts 0.16 -- 0.47 from the Sloan Digital Sky Survey. We measure the c…
Quasar Clustering at $25\kpch$ from a Complete Sample of Binaries
Adam D. Myers, Gordon T. Richards, Robert J. Brunner +5
We present spectroscopy of binary quasar candidates selected from Data Release 4 of the Sloan Digital Sky Survey (SDSS DR4) using Kernel Density Estimation (KDE). We present 27 new…