| WHAT CONTROLS THE Fe II STRENGTH IN ACTIVE GALACTIC NUCLEI? | |
Dong, XB1,2; Wang JG(王建国)1,3,4,5 ; Ho, LC2; Wang, TG1; Fan, XH6,7; Wang, HY1; Zhou, HY1; Yuan WM(袁为民)3,4; Dong, XB (reprint author), Univ Sci & Technol China, Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China.
| |
| 发表期刊 | ASTROPHYSICAL JOURNAL
 |
| 2011-08-01 | |
| 卷号 | 736期号:2 |
| DOI | 10.1088/0004-637X/736/2/86 |
| 产权排序 | 第4完成单位 |
| 收录类别 | SCI |
| 关键词 | Galaxies: Active Accretion Line: Formation Accretion Disks Quasars: Emission Lines Quasars: General |
| 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. |
| 项目资助者 | Chinese NSF [NSF-10703006, NSF-10728307, NSF-10973013, NSF-11033007, NSF-11073019] ; CAS [KJCX2-YW-T05] ; National 973 Project of China [2009CB824800] ; Fundamental Research Funds for the Central Universities [USTC WK2030220004] ; Carnegie Institution for Science ; OATF, USTC ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy ; National Aeronautics and Space Administration ; Japanese Monbukagakusho ; Max Planck Society ; Higher Education Funding Council for England |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:000292977400011 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | DIGITAL SKY SURVEY ; BLACK-HOLE MASSES ; LINE SEYFERT-1 GALAXIES ; NEAR-INFRARED SPECTROSCOPY ; QUASI-STELLAR OBJECTS ; BROAD EMISSION-LINES ; EDDINGTON RATIO ; IRON EMISSION ; REVERBERATION MEASUREMENTS ; ENERGY-DISTRIBUTIONS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/5009 |
| 专题 | 高能天体物理研究组 中国科学院天体结构与演化重点实验室 |
| 通讯作者 | Dong, XB (reprint author), Univ Sci & Technol China, Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China. |
| 作者单位 | 1.Key Laboratory for Research in Galaxies and Cosmology, The University of Sciences and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China 2.The Observatories of the Carnegie Institution for Science, Pasadena, CA 91101, USA 3.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China 4.National Astronomical Observatories/Yunnan Observatory and Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 5.Graduate School of the Chinese Academy of Sciences, Beijing 100039, China 6.Steward Observatory, The University of Arizona, Tucson, AZ 85721, USA 7.Max Planck Institute for Astronomy, D-69120, Heidelberg, Germany |
| 推荐引用方式 GB/T 7714 | Dong, XB,Wang JG,Ho, LC,et al. WHAT CONTROLS THE Fe II STRENGTH IN ACTIVE GALACTIC NUCLEI?[J]. ASTROPHYSICAL JOURNAL,2011,736(2). |
| APA | Dong, XB.,Wang JG.,Ho, LC.,Wang, TG.,Fan, XH.,...&Dong, XB .(2011).WHAT CONTROLS THE Fe II STRENGTH IN ACTIVE GALACTIC NUCLEI?.ASTROPHYSICAL JOURNAL,736(2). |
| MLA | Dong, XB,et al."WHAT CONTROLS THE Fe II STRENGTH IN ACTIVE GALACTIC NUCLEI?".ASTROPHYSICAL JOURNAL 736.2(2011). |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| WHAT CONTROLS THE Fe（10759KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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。
修改评论