中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Velocity-resolved Reverberation Mapping of Changing-look AGN NGC 2617

文献类型:期刊论文

作者Feng HC(封海成)1,2,3; Liu HT(刘洪涛)1,3,4; Bai JM(白金明)1,3,4; Yang, Zi-Xu2,5; Hu, Chen5; Li, Sha-Sha2,5; Yang, Sen2,5; Lu KX(卢开兴)1,3,4; Xiao, Ming5
刊名ASTROPHYSICAL JOURNAL
出版日期2021-05-01
卷号912期号:2页码:8
ISSN号0004-637X
DOI10.3847/1538-4357/abefe0
产权排序第1完成单位
文献子类Article
英文摘要

NGC 2617 attracted a lot of attention after the detection of changes in its spectral type; the geometry and kinematics of the broad-line region (BLR) are still ambiguous. In this paper, we present the high cadence (similar to 2 days) reverberation mapping campaign of NGC 2617 from 2019 October to 2020 May undertaken at the Lijiang 2.4 m telescope. For the first time, the velocity-resolved reverberation signature of the object was successfully detected. Both H alpha and H beta show an asymmetrical profile with a peak in the velocity-resolved time lags. For both of the lines, the lag of the line core is longer than those of the relevant wings, and the peak of the velocity-resolved lags is slightly blueshifted. These characteristics are not consistent with the theoretical prediction of the inflow, outflow or Keplerian disk model. Our observations give the time lags of H alpha, H beta, H gamma, and He I, with a ratio of tau(H alpha): tau(H beta): tau(H gamma): tau(He) (I) = 1.27:1.00:0.89:0.20, which indicates a stratified structure in the BLR of the object. It is the first time that the lags of H alpha and He I are obtained. Assuming a virial factor of f = 5.5 for the dispersion width of the line, the masses of the black holes derived from H alpha and H beta are 23.8(-207)(+5.4) and 21.1(-4.4)(+3.8) x 10(6)M(circle dot), respectively. Our observed results indicate the complexity of the BLR of NGC 2617.

学科主题天文学 ; 天体物理学 ; 高能天体物理学
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词ACTIVE GALACTIC NUCLEI ; BROAD-LINE REGION ; INTRADAY OPTICAL VARIABILITY ; SUPERMASSIVE BLACK-HOLE ; MONITORING PROJECT ; TIDAL DISRUPTION ; ACCRETION DISKS ; EMISSION-LINES ; S5 0716+714 ; SEARCH
资助项目National Natural Science Foundation of China[11991051] ; National Natural Science Foundation of China[11703077] ; National Natural Science Foundation of China[12073068] ; Yunnan Province Foundation[202001AT070069] ; CAS Interdisciplinary Innovation Team ; People's Government of Yunnan Province ; CAS
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000649617200001
出版者IOP PUBLISHING LTD
资助机构National Natural Science Foundation of China[11991051, 11703077, 12073068] ; Yunnan Province Foundation[202001AT070069] ; CAS Interdisciplinary Innovation Team ; People's Government of Yunnan Province ; CAS
源URL[http://ir.ynao.ac.cn/handle/114a53/24326]  
专题云南天文台_丽江天文观测站(南方基地)
云南天文台_中国科学院天体结构与演化重点实验室
通讯作者Feng HC(封海成)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, Yunnan, People's Republic of China
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
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China
5.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing, 100049, People's Republic of China
推荐引用方式
GB/T 7714
Feng HC,Liu HT,Bai JM,et al. Velocity-resolved Reverberation Mapping of Changing-look AGN NGC 2617[J]. ASTROPHYSICAL JOURNAL,2021,912(2):8.
APA Feng HC.,Liu HT.,Bai JM.,Yang, Zi-Xu.,Hu, Chen.,...&Xiao, Ming.(2021).Velocity-resolved Reverberation Mapping of Changing-look AGN NGC 2617.ASTROPHYSICAL JOURNAL,912(2),8.
MLA Feng HC,et al."Velocity-resolved Reverberation Mapping of Changing-look AGN NGC 2617".ASTROPHYSICAL JOURNAL 912.2(2021):8.

入库方式: OAI收割

来源:云南天文台

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