中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 云南天文台
  3. 中国科学院云南天文台
  4. 丽江天文观测站（南方基地）
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, Ming1,2,3; Du, Pu2; Lu, Kai-King1; Hu, Chen2; Li, Yan-Rong2; Zhang, Zhi-Xiang2; Wang, Kai2; Huang, Ying-Ke2; Bai, Jin-Ming1; Bian, Wei-Hao4
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2018-09-20
卷号865期号:1页码:6
ISSN号2041-8205
关键词galaxies: active galaxies: individual (NGC 5548) galaxies: nuclei galaxies: Seyfert
DOI10.3847/2041-8213/aadf8f
通讯作者Du, Pu(dupu@ihep.ac.cn)
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
出版者IOP PUBLISHING LTD
WOS记录号WOS:000445132200004
资助机构CAS ; People's Government of Yunnan Province ; National Key R&D Program of China ; NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of the CAS
源URL[http://ir.ynao.ac.cn/handle/114a53/17860]  
专题云南天文台_丽江天文观测站（南方基地）
通讯作者Du, Pu; Bai JM(白金明)
作者单位1.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China
2.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China
3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
4.Nanjing Normal Univ, Phys Dept, Nanjing 210097, Jiangsu, Peoples R China
5.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
6.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China
7.Univ Sci & Technol China, Dept Astron, Hefei 230026, Anhui, Peoples R China
8.Chinese Acad Sci, Natl Astron Observ China, 20A Datun Rd, Beijing 100020, 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.,...&Xiao M.(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：云南天文台

浏览0
下载0
收藏0
其他版本

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。