223 citations · 1.1k across the 32 of their papers we have counts for
4 papers · 1 filter
The Baldwin effect in the narrow emission lines of AGNs
Kai Zhang, Ting-Gui Wang, C. Martin Gaskell +1
The anti-correlations between the equivalent widths of emission lines and the continuum luminosity in AGNs, known as the Baldwin effect are well established for broad lines, but ar…
Rapid Infrared Variability of Three Radio-loud Narrow-line Seyfert 1 Galaxies: A View from the Wide-field Infrared Survey Explorer
Ning Jiang, Hong-Yan Zhou, Luis C. Ho +6
Using newly released data from the Wide-field Infrared Survey Explorer, we report the discovery of rapid infrared variability in three radio-loud narrow-line Seyfert 1 galaxies (NL…
A Uniformly Selected Sample of Low-mass Black Holes in Seyfert 1 Galaxies
Xiao-Bo Dong, Luis C. Ho, Weimin Yuan +4
We have conducted a systematic search of low-mass black holes (BHs) in active galactic nuclei (AGNs) with broad Halpha emission lines, aiming at building a homogeneous sample that…
Simultaneous Ultraviolet and Optical Emission-line Profiles of Quasars: Implications for Black Hole Mass Determination
Luis C. Ho, Paolo Goldoni, Xiao-Bo Dong +2
The X-shooter instrument on the VLT was used to obtain spectra of seven moderate-redshift quasars simultaneously covering the spectral range 3000 Ang to 2.5 microns. At z ~ 1.5, mo…