1.3k citations · 7.5k across the 52 of their papers we have counts for
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The COSMOS AGN Spectroscopic Survey I: XMM Counterparts
Jonathan R. Trump, Chris D. Impey, Martin Elvis +17
We present optical spectroscopy for an X-ray and optical flux-limited sample of 677 XMM-Newton selected targets covering the 2 deg^2 COSMOS field, with a yield of 485 high-confiden…
Determining Quasar Black Hole Mass Functions from their Broad Emission Lines: Application to the Bright Quasar Survey
Brandon C. Kelly, Marianne Vestergaard, Xiaohui Fan
We describe a Bayesian approach to estimating quasar black hole mass functions (BHMF) when using the broad emission lines to estimate black hole mass. We show how using the broad l…
A Flexible Method of Estimating Luminosity Functions
Brandon C. Kelly, Xiaohui Fan, Marianne Vestergaard
We describe a Bayesian approach to estimating luminosity functions. We derive the likelihood function and posterior probability distribution for the luminosity function, given the…
Observational Constraints on the Dependence of Radio-Quiet Quasar X-ray Emission on Black Hole Mass and Accretion Rate
Brandon C. Kelly, Jill Bechtold, Jonathan R. Trump +2
In this work we use a sample of 318 radio-quiet quasars (RQQ) to investigate the dependence of the ratio of optical/UV flux to X-ray flux, alpha_ox, and the X-ray photon index, Gam…
The Role of Galactic Winds on Molecular Gas Emission from Galaxy Mergers
Desika Narayanan, T. J. Cox, Brandon Kelly +7
We assess the impact of starburst and AGN feedback-driven winds on the CO emission from galaxy mergers, and, in particular, search for signatures of these winds in the simulated CO…
Gemini Near-infrared Spectroscopy of Luminous z~6 Quasars: Chemical Abundances, Black Hole Masses, and MgII Absorption
Linhua Jiang, Xiaohui Fan, Marianne Vestergaard +4
We present Gemini near-infrared spectroscopic observations of six luminous quasars at z=5.86.3. Five of them were observed using Gemini-South/GNIRS, which provides a simultan…
Some Aspects of Measurement Error in Linear Regression of Astronomical Data
Brandon C. Kelly
I describe a Bayesian method to account for measurement errors in linear regression of astronomical data. The method allows for heteroscedastic and possibly correlated measurement…
Spitzer observations of a 24 micron shadow: Bok Globule CB190
Amelia M. Stutz, John H. Bieging, George H. Rieke +8
We present Spitzer observations of the dark globule CB190 (L771). We observe a roughly circular 24 micron shadow with a 70 arcsec radius. The extinction profile of this shadow matc…
The Radio-Loud Fraction of Quasars is a Strong Function of Redshift and Optical Luminosity
Linhua Jiang, Xiaohui Fan, Zeljko Ivezic +4
Using a sample of optically-selected quasars from the Sloan Digital Sky Survey, we have determined the radio-loud fraction (RLF) of quasars as a function of redshift and optical lu…
Evolution of the X-ray Emission of Radio-Quiet Quasars
Brandon C. Kelly, Jill Bechtold, Aneta Siemiginowska +2
We report new Chandra observations of seven optically faint, z \sim 4 radio-quiet quasars. We have combined these new observations with previous Chandra observations of radio-quiet…
Virial Masses of Black Holes from Single Epoch Spectra of AGN
Brandon C. Kelly, Jill Bechtold
We describe the general problem of estimating black hole masses of AGN by calculating the conditional probability distribution of M_BH given some set of observables. Special attent…
Morphological Classification of Galaxies by Shapelet Decomposition in the Sloan Digital Sky Survey II: Multiwavelength Classification
B. C. Kelly, T. A. McKay
We describe the application of the `shapelet' linear decomposition of galaxy images to multi-wavelength morphological classification using the and -band images of 151…
Morphological Classification of Galaxies by Shapelet Decomposition in the Sloan Digital Sky Survey
Brandon C. Kelly, Timothy A. McKay
We describe application of the `shapelet' linear decomposition of galaxy images to morphological classification using images of 3000 galaxies from the Sloan Digital Sky Surv…
The Cross-Wavelet Transform and Analysis of Quasiperiodic Behavior in the Pearson-Readhead VLBI Survey Sources
Brandon C. Kelly, Philip A. Hughes, Hugh D. Aller +1
We introduce an algorithm for applying a cross-wavelet transform to analysis of quasiperiodic variations in a time-series, and introduce significance tests for the technique. We ap…