35 citations · 69 across the 3 of their papers we have counts for
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astro-ph.CO2012★ 35 cited
Two-Component Structure of the Hbeta Broad-Line Region in Quasars. I. Evidence from Spectral Principal Component Analysis
Chen Hu, Jian-Min Wang, Luis C. Ho +3
We report on a spectral principal component analysis (SPCA) of a sample of 816 quasars, selected to have small Fe II velocity shifts with spectral coverage in the rest wavelength r…
astro-ph.CO2012★ 9 cited
Intervening BLR Clouds' Effects on Optical/UV Spectrum
Ye Wang, Gary J. Ferland, Chen Hu +2
Recent x-ray observations of Mrk 766 suggest that broad emission line region clouds cross our line of sight and produce variable x-ray absorption. Here we investigate what optical/…