Metal-Enriched Outflows in the Ultra-Luminous infrared Quasar Q1321+058 (2009)
Wang, Tinggui, Zhou, Hongyan, Yuan, Weimin, Lu, Honglin, Dong, Xiaobo, Shan, Hongguang
Quasar outflows may play important role in the evolution of its host galaxy and central black hole. In this paper, we present a detailed study of multiple outflows in the obscured ultra-luminous...
What controls the FeII strength in active galactic nuclei? (2009)
Dong, Xiaobo, Wang, Jianguo, Wang, Tinggui, Wang, Huiyuan, Fan, Xiaohui, Zhou, Hongyan, ...
We have investigated the correlations of the equivalent widths (EWs) of narrow and broad FeII emission lines and the FeII/MgII intensity ratio with fundamental physical parameters of active galactic...
The origin and physical mechanism of the ensemble Baldwin effect (2009)
Dong, Xiaobo, Wang, Jianguo, Wang, Tinggui, Wang, Huiyuan, Fan, Xiaohui, Zhou, Hongyan, ...
We have conducted a systematic investigation of the origin and underlying physics of the line--line and line--continuum correlations of AGNs, particularly the Baldwin effect. Based on the homogeneous...
Exploring the Partially-obscured BLR and Partially-covered NLR (2009)
Zhang, Kai, Wang, Tinggui, Dong, Xiaobo, Zhou, Hongyan, Lu, Honglin
We have conducted a series of investigations on the geometry of the reddening material in AGNs, which have important implications to the AGN unification and SMBH demography. According to our...
The Correlation between X-ray and UV Properties of BAL QSOs (2009)
Lulu Fan, HuiYuan Wang, Tinggui Wang, Junxian Wang, Xiaobo Dong, Kai Zhang, ...
We compile a large sample of broad absorption lines (BAL) quasars with X-ray observations from the \xmm archive data and Sloan Digital Sky Survey Data Release 5. The sample consists of 41 BAL QSOs....
The Correlation between X-ray and UV Properties of BAL QSOs (2008)
Fan, LuLu, Wang, HuiYuan, Wang, Tinggui, Wang, Junxian, Dong, Xiaobo, Zhang, Kai, ...
We compile a large sample of broad absorption lines (BAL) quasars with X-ray observations from the \xmm archive data and Sloan Digital Sky Survey Data Release 5. The sample consists of 41 BAL QSOs....
Difference in Narrow Emission Line Spectra of Seyfert 1 and 2 galaxies (2008)
Zhang, Kai, Wang, Tinggui, Dong, Xiaobo, Lu, Honglin
In the unification scheme of Seyfert galaxies, a dusty torus blocks the continuum source and broad line region in Seyfert 2 galaxies. However it is not clear whether or not and to what extent the...
XMM observations of BAL Quasars with polar outflows (2008)
Wang, Junxian, Jiang, Peng, Zhou, Hongyan, Wang, Tinggui, Dong, Xiaobo, Wang, Huiyuan
We have selected a sample of broad absorption line (BAL) quasars which show significant radio variations, indicating the presence of polar BAL outflows. We obtained snapshot XMM observations of four...
Broad-line Balmer decrements in blue active galactic nuclei (2008)
Dong, Xiaobo, Wang, Tinggui, Wang, Jianguo, Yuan, Weimin, Zhou, Hongyan, Dai, Haifeng, ...
Broad-line Balmer Decrements in Blue Active Galactic Nuclei (2007)
Dong, Xiaobo, Wang, Tinggui, Wang, Jianguo, Yuan, Weimin, Zhou, Hongyan, Dai, Haifeng, ...
We have investigated the broad-line Balmer decrements (Halpha/Hbeta) for a large, homogeneous sample of Seyfert 1 galaxies and QSOs using spectroscopic data obtained in the Sloan Digital Sky Survey....
Xu, Dawei, Komossa, Stefanie, Zhou, Hongyan, Wang, Tinggui, Wei, Jianyan
The properties of narrow-line Seyfert 1 (NLS1) galaxies, the links and correlations between them, and the physics behind them, are still not well understood. Apart from accretion rates and black hole...
On the fraction of X-ray obscured quasars (2007)
Wang, Junxian, Jiang, Peng, Zheng, Zhenya, Wang, Tinggui, Team, The CDF-S
Various studies have claimed that the fraction of obscured AGN drops with luminosity, but contrary results are also reported. We present our recent studies on the fraction of X-ray obscured quasars...
A narrow line Seyfert 1--blazar composite nucleus in 2MASX J0324+3410 (2007)
Zhou, Hongyan, Wang, Tinggui, Yuan, Weimin, Shan, Hongguang, Komossa, Stefanie, Lu, Honglin, ...
We report the identification of 2MASX J032441.19+341045.9 (hereafter 2MASX J0324+3410) with an appealing object which shows the dual properties of both a narrow line Seyfert 1 galaxy (NLS1) and a...
A narrow-line Seyfert 1-blazar composite nucleus in 2MASX J0324+3410 (2007)
Zhou, Hongyan, Wang, Tinggui, Yuan, Weimin, Shan, Hongguang, Komossa, Stefanie, Lu, Honglin, ...
Systematic study of a large sample of NLS1 galaxies from SDSS: first results (2006)
Yuan, Weimin, Zhou, Hongyan, Wang, Tinggui, Dong, Xiaobo, Lu, Honglin, Wang, Junxian, ...
This proceedings contribution summarizes first results obtained from a systematic study of 2011 NLS1 galaxies, as presented in Zhou et al. (2006, ApJS 166, 128). The sample was compiled by examining...
Broad-line AGNs with Candidate Intermediate-mass Black holes in the Sloan Digital Sky Survey (2006)
Dong, Xiaobo, Wang, Tinggui, Yuan, Weimin, Zhou, Hongyan, Shan, Hongguang, Wang, Huiyuan, ...
We have conducted a systematic search of AGNs with IMBHs from the SDSS DR4. As results we found 245 candidates of broad-line AGN with M_{BH}
SDSS J160531.84+174826.1: A Dwarf Disk Galaxy With An Intermediate-Mass Black Hole (2006)
Dong, Xiaobo, Wang, Tinggui, Yuan, Weimin, Shan, Hongguang, Zhou, Hongyan, Fan, Lulu, ...
We report the discovery of a dwarf Seyfert 1 active galactic nucleus (AGN) with a candidate intermediate-mass black hole hosted by the dwarf galaxy SDSS J160531.84+174826.1 at z=0.032. A broad...
Zhou, Hongyan, Wang, Tinggui, Yuan, Weimin, Lu, Honglin, Dong, Xiaobo, Wang, Junxian, ...
This is the first paper in a series dedicated to the study of the emission-line and continuum properties of narrow line Seyfert 1 galaxies (NLS1s). We carried out a systematic search for NLS1s from...
Evidence for a population of beamed radio intermediate quasars (2006)
Wang, Tinggui, Zhou, Hongyan, Wang, Junxian, Lu, Youjun, Lu, Yu
Whether radio intermediate quasars possess relativistic jets as radio-loud quasars is an important issue in the understanding of the origin of radio emission in quasars. In this letter, using the...
Ensemble Learning Independent Component Analysis of Normal Galaxy Spectra (2005)
Lu, Honglin, Zhou, Hongyan, Wang, Junxian, Wang, Tinggui, Dong, Xiaobo, Zhuang, Zhenquan, ...
In this paper, we employe a new statistical analysis technique, Ensemble Learning for Independent Component Analysis (EL-ICA), on the synthetic galaxy spectra from a newly released high resolution...
Polar Outflows in Six Broad Absorption Line Quasars (2005)
Zhou, Hongyan, Wang, Tinggui, Wang, Huiyuan, Wang, Junxian, Yuan, Weimin, Lu, Yu
Using the radio observations by FIRST and NVSS, we build a sample of 151 radio variable quasars selected from the Sloan Digital Sky Survey Data Release 3 (SDSS DR3). Six (probably another two) among...
Wang, Tinggui, Dong, Xiaobo, Zhou, Hongyan, Wang, Junxian
We report the detection of strong CaII/MgII absorption lines at the quasar redshift in the narrow line quasar SDSS J2339-0912 (z=0.6604). The quasar exhibits strong FeII, small Balmer emission line...
Obscured Binary Quasar Cores in SDSS J104807.74+005543.5? (2004)
Zhou, Hongyan, Wang, Tinggui, Zhang, Xueguang, Dong, Xiaobo, Li, Cheng
We report the discovery of a possible close binary system of quasars in SDSS J1048+0055. The [OIII]4959,5007 emission lines are clearly double-peaked, and two discrete radio sources with a projected...
Possible Evidence for a Truncated Thin Disk in Seyfert 1 Galaxy NGC4593 (2000)
We compile the multi-band spectral energy distribution (SED) of Seyfert 1 galaxy NGC4593, and investigate its optical-to-ultraviolet (OUV) continuum and iron K\alpha line profile. No strong ``big...
The broad Fe K line profile in NGC 4151 (1999)
Wang, Junxian., Zhou, Youyuan., Wang, Tinggui.
We present an analysis of the Fe K line profile of NGC 4151 by using long ASCA observation data obtained in May 1995. The unprecedented good data quality, which is much better in the energy band...