226 citations · 2.2k across the 50 of their papers we have counts for
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A note on black hole masses estimated by the second moment in Narrow Line Seyfert 1 Galaxies
Wei-Hao Bian, Chen Hu, Qiu-Sheng Gu +1
The second moment of the H emission line is calculated for 329 narrow line Seyfert 1 galaxies (NLS1s) selected from the Sloan Digital Sky Survey (SDSS), which is used to calcula…
A Systematic Analysis of Fe II Emission in Quasars: Evidence for Inflow to the Central Black Hole
Chen Hu, Jian-Min Wang, Luis C. Ho +4
Broad Fe II emission is a prominent feature of the optical and ultraviolet spectra of quasars. We report on a systematical investigation of optical Fe II emission in a large sample…
The Origin and Evolution of \civ Baldwin Effect in QSOs from the Sloan Digital Sky Survey
Yan Xu, Wei-Hao Bian, Qi-Rong Yuan +1
Using a large sample of 26623 quasars with redshifts in the range with \civ 1549 Åemission line in Fifth Data Release of the Sloan Digital Sky Survey (SDSS),…
The radio luminosity, black hole mass and Eddington ratio for quasars from the Sloan Digital Sky Survey
Wei-Hao. Bian, Yan-Mei. Chen, Chen. Hu +2
We investigate the $\mbh- σ_*$ relation for radio-loud quasars with redshift in Data Release 3 of the Sloan Digital Sky Survey (SDSS). The sample consists of 3772 quasars…
Active Galactic Nuclei with Double-Peaked Balmer Lines: I. Black Hole Masses and the Eddington ratios
Wei-Hao Bian, Yan-Mei Chen, Qu-Sheng Gu +1
Using the stellar population synthesis, we model the stellar contribution for a sample of 110 double-peaked broad-lines AGNs from the Sloan Digital Sky Survey (SDSS). The stellar v…
The accretion ratios in Seyfert 2 galaxies with and without hidden broad-line regions
W. Bian, Q. Gu
Using a large sample of 90 Seyfert 2 galaxies (Sy2s) with spectropolarimetric observations, we tested the suggestion that the presence of hidden broad-line regions (HBLRs) in Sy2s…