NAOC Open IR
Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 3516
Feng,Hai-Cheng1,2,3; Hu,Chen4; Li,Sha-Sha2,4; Liu,H. T.1,3,5; Bai,J. M.1,3,5; Xing,Li-Feng1,3,5; Wang,Wei-Yang2,6; Yang,Zi-Xu2,4; Xiao,Ming4; Lu,Kai-Xing1,3,5
2021-03-01
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume909Issue:1
AbstractAbstract The changes of broad emission lines should be a crucial issue in understanding the physical properties of changing-look active galactic nuclei (CL-AGNs). Here we present the results of an intensive and homogeneous 6 month long reverberation mapping (RM) monitoring campaign during a low-activity state of the CL-AGN Seyfert galaxy NGC 3516. Photometric and spectroscopic monitoring was carried out during 2018–2019 with the Lijiang 2.4 m telescope. The sampling is 2 days in most nights, and the average sampling is ~3 days. The rest-frame time lags of Hα and Hβ are and days, respectively. From an rms Hβ line dispersion of σline = 1713.3 ± 46.7 km s?1 and a virial factor of fσ = 5.5, the central black hole mass of NGC 3516 is estimated to be , which is in agreement with previous estimates. The velocity-resolved delays show that the time lags increase toward negative velocity for both Hα and Hβ. The velocity-resolved RM of Hα is done for the first time. These RM results are consistent with other observations before the spectral-type change, indicating a basically constant broad-line region structure during the CL process. The CL model of changes of accretion rate seems to be favored by long-term Hβ variability and RM observations of NGC 3516.
KeywordActive galaxies Photometry Reverberation mapping Seyfert galaxies Spectroscopy Supermassive black holes
DOI10.3847/1538-4357/abd851
Language英语
WOS IDIOP:0004-637X-909-1-abd851
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/59744
Collection中国科学院国家天文台
Corresponding AuthorFeng,Hai-Cheng
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, Yunnan, People's Republic of China; hcfeng@ynao.ac.cn
2.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, Yunnan, People's Republic of China; htliu@ynao.ac.cn
4.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, People's Republic of China
5.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China; baijinming@ynao.ac.cn
6.Key Laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Beijing 100101, People's Republic of China
Recommended Citation
GB/T 7714
Feng,Hai-Cheng,Hu,Chen,Li,Sha-Sha,et al. Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 3516[J]. The Astrophysical Journal,2021,909(1).
APA Feng,Hai-Cheng.,Hu,Chen.,Li,Sha-Sha.,Liu,H. T..,Bai,J. M..,...&Lu,Kai-Xing.(2021).Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 3516.The Astrophysical Journal,909(1).
MLA Feng,Hai-Cheng,et al."Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 3516".The Astrophysical Journal 909.1(2021).
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