98 citations · 261 across the 5 of their papers we have counts for
5 papers
Hbeta Profiles in Quasars: Evidence for an Intermediate-line Region
Chen Hu, Jian-Min Wang, Luis C. Ho +3
We report on a systematic investigation of the Hbeta and Fe II emission lines in a sample of 568 quasars within z < 0.8 selected from the Sloan Digital Sky Survey. The conventional…
SED, Metallicity and Age of Halo Globular Clusters in M33
Jun Ma, Xu Zhou, Jiansheng Chen +4
In this paper we study the properties of ten halo globular clusters in the nearby spiral galaxy M33. CCD images of M33 were obtained as a part of the BATC Colour Survey of the sky…
The Mass Distribution of Black Holes in BL Lacertae Objects
Jian-Min Wang, Sui-Jian Xue, Jian-Cheng Wang
In this {\it Letter}, we make an attempt to estimate the masses of black holes and their distributions in BL Lac objects. We find there is a bimodal population of black hole masses…
Intermediate-band Surface Photometry of the Edge-on Galaxy: NGC 4565
Hong Wu, Dave Burstein, Zugan Deng
We present a deep, 42.79 hr image of the nearby, edge-on galaxy NGC 4565 in the Beijing-Arizona-Taipei-Connecticut (BATC) 6660A band using the large-format CCD system on the 0.6m S…
Spatially resolved Spectro-photometry of M81: Age, Metallicity and Reddening Maps
X. Kong, X. Zhou, J. S. Chen +1
In this paper, we present a multi-color photometric study of the nearby spiral galaxy M81, using images obtained with the Beijing Astronomical Observatory 60/90 cm Schmidt Telescop…