1.3k citations · 7.5k across the 52 of their papers we have counts for
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The Luminosity Function at z~8 from 97 Y-band dropouts: Inferences About Reionization
Kasper B. Schmidt, Tommaso Treu, Michele Trenti +6
[Abbreviated] We present the largest search to date for Lyman break galaxies (LBGs) based on 350 arcmin of HST observations in the V-, Y-, J- and H-bands from the Brig…
Empirical Links between XRB and AGN accretion using the complete z<0.4 spectroscopic CSC/SDSS Catalog
Markos Trichas, Paul Green, Anca Constantin +8
Striking similarities have been seen between accretion signatures of Galactic X-ray binary (XRB) systems and active galactic nuclei (AGN). XRB spectral states show a V-shaped corre…
Indications of a sub-linear and non-universal Kennicutt-Schmidt relationship
Rahul Shetty, Brandon C. Kelly, Nurur Rahman +5
We estimate the parameters of the Kennicutt-Schmidt (KS) relationship, linking the star formation rate (Sigma_SFR) to the molecular gas surface density (Sigma_mol), in the STING sa…
Stacked reverberation lags at high redshift
S. Fine, T. Shanks, P. Green +9
Over the past 20years reverberation mapping has proved one of the most successful techniques for studying the local (<1pc) environment of super-massive black holes that drive activ…
Evidence for a non-universal Kennicutt-Schmidt relationship using hierarchical Bayesian linear regression
Rahul Shetty, Brandon C. Kelly, Frank Bigiel
For investigating the relationship between the star formation rate and gas surface density, we develop a Bayesian linear regression method that rigorously treats measurement uncert…
Recalibration of the virial factor and M-sigma relation for local active galaxies
Daeseong Park, Brandon C. Kelly, Jong-Hak Woo +1
Determining the virial factor of the broad-line region (BLR) gas is crucial for calibrating AGN black hole mass estimators, since the measured line-of-sight velocity needs to be co…
The Demographics of Broad Line Quasars in the Mass-Luminosity Plane II. Black Hole Mass and Eddington Ratio Functions
Brandon C. Kelly, Yue Shen
We employ a flexible Bayesian technique to estimate the black hole mass and Eddington ratio functions for Type 1 (i.e., broad line) quasars from a uniformly-selected data set of ~5…
Composite reverberation mapping
S. Fine, T. Shanks, S. M. Croom +7
Reverberation mapping offers one of the best techniques for studying the inner regions of QSOs. It is based on cross-correlating continuum and emission-line light curves. New time-…
Mass Functions of Supermassive Black Holes Across Cosmic Time
Brandon C. Kelly, Andrea Merloni
The black hole mass function of supermassive black holes describes the evolution of the distribution of black hole mass. It is one of the primary empirical tools available for mapp…
A Description of Quasar Variability Measured Using Repeated SDSS and POSS Imaging
Chelsea L. MacLeod, Zeljko Ivezic, Branimir Sesar +9
We provide a quantitative description and statistical interpretation of the optical continuum variability of quasars. The Sloan Digital Sky Survey (SDSS) has obtained repeated imag…
The Demographics of Broad-Line Quasars in the Mass-Luminosity Plane. I. Testing FWHM-Based Virial Black Hole Masses
Yue Shen, Brandon C. Kelly
We jointly constrain the luminosity function (LF) and black hole mass function (BHMF) of broad-line quasars with forward Bayesian modeling in the quasar mass-luminosity plane, base…
Accretion Rate and the Physical Nature of Unobscured Active Galaxies
Jonathan R. Trump, Christopher D. Impey, Brandon C. Kelly +15
We show how accretion rate governs the physical properties of a sample of unobscured broad-line, narrow-line, and lineless active galactic nuclei (AGNs). We avoid the systematic er…
Spectropolarimetric Evidence for Radiatively Inefficient Accretion in an Optically Dull Active Galaxy
Jonathan R. Trump, Tohru Nagao, Hiro Ikeda +9
We present Subaru/FOCAS spectropolarimetry of two active galaxies in the Cosmic Evolution Survey. These objects were selected to be optically dull, with the bright X-ray emission o…
Constraints on Black Hole Growth, Quasar Lifetimes, and Eddington Ratio Distributions from the SDSS Broad Line Quasar Black Hole Mass Function
Brandon C. Kelly, Marianne Vestergaard, Xiaohui Fan +3
We present an estimate of the black hole mass function (BHMF) of broad line quasars (BLQSOs) that self-consistently corrects for incompleteness and the statistical uncertainty in t…
Modeling the Time Variability of SDSS Stripe 82 Quasars as a Damped Random Walk
C. L. MacLeod, Ž. Ivezić, C. S. Kochanek +10
We model the time variability of ~9,000 spectroscopically confirmed quasars in SDSS Stripe 82 as a damped random walk. Using 2.7 million photometric measurements collected over 10…
The Impact of the Uncertainty in Single-Epoch Virial Black Hole Mass Estimates on the Observed Evolution of the Black Hole - Bulge Scaling Relations
Yue Shen, Brandon C. Kelly
Recent observations of the black hole (BH) - bulge scaling relations usually report positive redshift evolution, with higher redshift galaxies harboring more massive BHs than expec…
The Nature of Optically Dull Active Galactic Nuclei in COSMOS
Jonathan R. Trump, Chris D. Impey, Yoshi Taniguchi +17
We present infrared, optical, and X-ray data of 48 X-ray bright, optically dull AGNs in the COSMOS field. These objects exhibit the X-ray luminosity of an active galactic nucleus (…
Observational Limits on Type 1 AGN Accretion Rate in COSMOS
Jonathan R. Trump, Chris D. Impey, Brandon C. Kelly +13
We present black hole masses and accretion rates for 182 Type 1 AGN in COSMOS. We estimate masses using the scaling relations for the broad Hb, MgII, and CIV emission lines in the…
Are the Variations in Quasar Optical Flux Driven by Thermal Fluctuations?
Brandon C. Kelly, Jill Bechtold, Aneta Siemiginowska
We analyze a sample of optical light curves for 100 quasars, 70 of which have black hole mass estimates. Our sample is the largest and broadest used yet for modeling quasar variabi…