H beta profiles in quasars: Evidence for an intermediate-line region

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	H beta profiles in quasars: Evidence for an intermediate-line region
	Hu C(胡晨); Wang JM(王建民); Chen YM(陈艳梅); Bian WH(卞维豪); Hu, C; Wang, JM; Ho, LC; Chen, YM; Bian, WH; Xue, SJ
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2008
卷号	683 期号:2 页码:L115-L118
关键词	galaxies : nuclei galaxies : Seyfert line : profiles quasars : emission lines quasars : general
通讯作者	[Hu, Chen ; Xue, Sui-Jian] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Grad Univ, Beijing 100049, Peoples R China ; [Ho, Luis C.] Observ Carnegie Inst Washington, Pasadena, CA 91101 USA ; [Bian, Wei-Hao] Nanjing Normal Univ, Dept Phys, Nanjing, Peoples R China ; [Bian, Wei-Hao] Nanjing Normal Univ, Inst Theoret Phys, Nanjing, Peoples R China ; [Wang, Jian-Min] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100864, Peoples R China
英文摘要	We report on a systematic investigation of the H beta and Fe II emission lines in a sample of 568 quasars within z < 0.8 selected from the Sloan Digital Sky Survey. The conventional broad H beta emission line can be decomposed into two components-one with intermediate velocity width and another with very broad width. The velocity shift and equivalent width of the intermediate-width component do not correlate with those of the very broad component of H beta but its velocity shift and width do resemble Fe II. Moreover, the width of the very broad component is roughly 2.5 times that of the intermediate-width component. These characteristics strongly suggest the existence of an intermediate-line region, whose kinematics seem to be dominated by infall, located at the outer portion of the broad-line region.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
原文出处	SCI
语种	英语
WOS记录号	WOS:000258621600006
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/240242]
专题	高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Hu C,Wang JM,Chen YM,et al. H beta profiles in quasars: Evidence for an intermediate-line region[J]. ASTROPHYSICAL JOURNAL LETTERS,2008,683(2):L115-L118.
APA	胡晨.,王建民.,陈艳梅.,卞维豪.,Hu, C.,...&Xue, SJ.(2008).H beta profiles in quasars: Evidence for an intermediate-line region.ASTROPHYSICAL JOURNAL LETTERS,683(2),L115-L118.
MLA	胡晨,et al."H beta profiles in quasars: Evidence for an intermediate-line region".ASTROPHYSICAL JOURNAL LETTERS 683.2(2008):L115-L118.