NAOC Open IR  > 空间科学研究部
WHAT CONTROLS THE Fe II STRENGTH IN ACTIVE GALACTIC NUCLEI?
Dong, Xiao-Bo1,2; Wang, Jian-Guo1,3,4,5,6; Ho, Luis C.2; Wang, Ting-Gui1; Fan, Xiaohui7,8; Wang, Huiyuan1; Zhou, Hongyan1; Yuan, Weimin3,4,5
2011-08-01
发表期刊ASTROPHYSICAL JOURNAL
卷号736期号:2
摘要We used a large, homogeneous sample of 4178 z <= 0.8 Seyfert 1 galaxies and QSOs selected from the Sloan Digital Sky Survey to investigate the strength of Fe II emission and its correlation with other emission lines and physical parameters of active galactic nuclei. We find that the strongest correlations of almost all the emission-line intensity ratios and equivalent widths (EWs) are with the Eddington ratio (L/L-Edd), rather than with the continuum luminosity at 5100 angstrom (L-5100) or black hole mass (M-BH); the only exception is the EW of ultraviolet Fe II emission, which does not correlate at all with broad-line width, L-5100, M-BH, or L/L-Edd. By contrast, the intensity ratios of both the ultraviolet and optical Fe II emission to MgII lambda 2800 correlate quite strongly with L/L-Edd. Interestingly, among all the emission lines in the near-UV and optical studied in this paper (including MgII lambda 2800, H beta, and [O III]lambda 5007), the EW of narrow optical Fe II emission has the strongest correlation with L/L-Edd. We hypothesize that the variation of the emission-line strength in active galaxies is regulated by L/L-Edd because it governs the global distribution of the hydrogen column density of the clouds gravitationally bound in the line-emitting region, as well as its overall gas supply. The systematic dependence on L/L-Edd must be corrected when using the Fe II/MgII intensity ratio as a measure of the Fe/Mg abundance ratio to study the history of chemical evolution in QSO environments.
关键词Galaxies: Active Accretion Line: Formation Accretion Disks Quasars: Emission Lines Quasars: General
DOI10.1088/0004-637X/736/2/86
收录类别SCI
语种英语
WOS记录号WOS:000292977400011
引用统计
被引频次:33[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/7969
专题空间科学研究部
作者单位1.Univ Sci & Technol China, Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China
2.Carnegie Inst Sci, Pasadena, CA 91101 USA
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China
5.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China
6.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
7.Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
8.Max Planck Inst Astron, D-69120 Heidelberg, Germany
推荐引用方式
GB/T 7714
Dong, Xiao-Bo,Wang, Jian-Guo,Ho, Luis C.,et al. WHAT CONTROLS THE Fe II STRENGTH IN ACTIVE GALACTIC NUCLEI?[J]. ASTROPHYSICAL JOURNAL,2011,736(2).
APA Dong, Xiao-Bo.,Wang, Jian-Guo.,Ho, Luis C..,Wang, Ting-Gui.,Fan, Xiaohui.,...&Yuan, Weimin.(2011).WHAT CONTROLS THE Fe II STRENGTH IN ACTIVE GALACTIC NUCLEI?.ASTROPHYSICAL JOURNAL,736(2).
MLA Dong, Xiao-Bo,et al."WHAT CONTROLS THE Fe II STRENGTH IN ACTIVE GALACTIC NUCLEI?".ASTROPHYSICAL JOURNAL 736.2(2011).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Dong, Xiao-Bo]的文章
[Wang, Jian-Guo]的文章
[Ho, Luis C.]的文章
百度学术
百度学术中相似的文章
[Dong, Xiao-Bo]的文章
[Wang, Jian-Guo]的文章
[Ho, Luis C.]的文章
必应学术
必应学术中相似的文章
[Dong, Xiao-Bo]的文章
[Wang, Jian-Guo]的文章
[Ho, Luis C.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。