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	Hidden broad-line regions in seyfert 2 galaxies: from the spectropolarimetric perspective
	Du,Pu1; Wang,Jian-Min1,2,3; Zhang,Zhi-Xiang1
刊名	The astrophysical journal letters
	2017-04-27
卷号	840期号:1
关键词	Galaxies: active Galaxies: nuclei Galaxies: seyfert Quasars: emission lines
ISSN号	2041-8205
DOI	10.3847/2041-8213/aa6d7b
英文摘要	Abstract the hidden broad-line regions (blrs) in seyfert 2 galaxies, which display broad emission lines (bels) in their polarized spectra, are a key piece of evidence in support of the unified model for active galactic nuclei (agns). however, the detailed kinematics and geometry of hidden blrs are still not fully understood. the virial factor obtained from reverberation mapping of type 1 agns may be a useful diagnostic of the nature of hidden blrs in type 2 objects. in order to understand the hidden blrs, we compile six type 2 objects from the literature with polarized bels and dynamical measurements of black hole masses. all of them contain pseudobulges. we estimate their virial factors, and find the average value is 0.60 and the standard deviation is 0.69, which agree well with the value of type 1 agns with pseudobulges. this study demonstrates that (1) the geometry and kinematics of blr are similar in type 1 and type 2 agns of the same bulge type (pseudobulges), and (2) the small values of virial factors in seyfert 2 galaxies suggest that, similar to type 1 agns, blrs tend to be very thick disks in type 2 objects.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:2041-8205-840-1-AA6D7B
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2175724
专题	高能物理研究所
作者单位	1.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China; dupu@ihep.ac.cn 2.National Astronomical Observatories of China, Chinese Academy of Sciences, 20A Datun Road, Beijing 100020, China 3.School of Astronomy and Space Science, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
推荐引用方式 GB/T 7714	Du,Pu,Wang,Jian-Min,Zhang,Zhi-Xiang. Hidden broad-line regions in seyfert 2 galaxies: from the spectropolarimetric perspective[J]. The astrophysical journal letters,2017,840(1).
APA	Du,Pu,Wang,Jian-Min,&Zhang,Zhi-Xiang.(2017).Hidden broad-line regions in seyfert 2 galaxies: from the spectropolarimetric perspective.The astrophysical journal letters,840(1).
MLA	Du,Pu,et al."Hidden broad-line regions in seyfert 2 galaxies: from the spectropolarimetric perspective".The astrophysical journal letters 840.1(2017).

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