A High-quality Velocity-delay Map of the Broad-line Region in NGC 5548
文献类型：期刊论文
| 作者 | Xiao, Ming2,3,4; Du, Pu3; Lu, Kai-King2; Hu, Chen3; Li, Yan-Rong3; Zhang, Zhi-Xiang3; Wang, Kai3; Huang, Ying-Ke3; Bai, Jin-Ming2; Bian, Wei-Hao5 |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2018-09-20 |
| 卷号 | 865期号:1页码:6 |
| 关键词 | galaxies: active galaxies: individual (NGC 5548) galaxies: nuclei galaxies: Seyfert |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/aadf8f |
| 英文摘要 | NGC 5548 has been well spectroscopically monitored for reverberation mapping of the central kinematics by 19 campaigns. Using the maximum entropy method in this Letter, we build up a high-quality velocity-delay map of the H beta emission line in the light curves of the continuum and the line variations observed between 2015 and 2016. The map shows the response strength and lags of the velocity fields of the H beta-emitting regions. The velocity-delay structure of the map is generally symmetric, with strong red and blue wings at time lag tau less than or similar to 15 days, a narrower velocity distribution at tau greater than or similar to 15 days, and a deficit of response in the core. This is suggestive of a disk geometry of the broad-line region (BLR). The relatively weaker H beta response at the longer lags in the red side indicates anisotropic emission from the outer part of the BLR. We also recover the velocity-delay maps of NGC. 5548 from the historical data of 13 years to investigate the long-term variability of its BLR. In general, the BLR of NGC 5548 was switching between the inflow and virialized phases in the past years. The resultant maps of seven years reveal inflow signatures and show decreasing lags, indicating that the changes in the BLR size are related to the infalling BLR gas. The other four maps show potential disk signatures that are similar to our map. |
| WOS关键词 | ACTIVE GALACTIC NUCLEI ; AGN MONITORING PROJECT ; REVERBERATION MAPPING DATA ; BLACK-HOLE ; EMISSION-LINES ; DISK WINDS ; ARP 151 ; MASS ; INVERSION ; DYNAMICS |
| 资助项目 | CAS ; People's Government of Yunnan Province ; National Key R&D Program of China[2016YFA0400701] ; National Key R&D Program of China[2016YFA0400702] ; NSFC[NSFC-11503026] ; NSFC[NSFC-11233003] ; NSFC[NSFC-11573026] ; NSFC[NSFC-11703077] ; NSFC[NSFC-11773029] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSWSLH007] ; Key Research Program of the CAS[KJZD-EW-M06] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000445132200004 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | CAS ; CAS ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of the CAS ; Key Research Program of the CAS ; CAS ; CAS ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of the CAS ; Key Research Program of the CAS ; CAS ; CAS ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of the CAS ; Key Research Program of the CAS ; CAS ; CAS ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of the CAS ; Key Research Program of the CAS |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/22884]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Du, Pu |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ China, 20A Datun Rd, Beijing 100020, Peoples R China 2.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China 4.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 5.Nanjing Normal Univ, Phys Dept, Nanjing 210097, Jiangsu, Peoples R China 6.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 7.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China 8.Univ Sci & Technol China, Dept Astron, Hefei 230026, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Ming,Du, Pu,Lu, Kai-King,et al. A High-quality Velocity-delay Map of the Broad-line Region in NGC 5548[J]. ASTROPHYSICAL JOURNAL LETTERS,2018,865(1):6. |
| APA | Xiao, Ming.,Du, Pu.,Lu, Kai-King.,Hu, Chen.,Li, Yan-Rong.,...&Wang, Jian-Min.(2018).A High-quality Velocity-delay Map of the Broad-line Region in NGC 5548.ASTROPHYSICAL JOURNAL LETTERS,865(1),6. |
| MLA | Xiao, Ming,et al."A High-quality Velocity-delay Map of the Broad-line Region in NGC 5548".ASTROPHYSICAL JOURNAL LETTERS 865.1(2018):6. |
入库方式： OAI收割
来源：国家天文台
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