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Velocity-resolved Ionization Mapping of Broad Line Region. I. Insights into Diverse Geometry and Kinematics

文献类型：期刊论文

作者Li SS(李莎莎)7,8,9,10; Feng HC(封海成)7,8,9,10; Liu HT(刘洪涛)8,9,10; Bai JM(白金明)7,8,9,10; Ji, Xiang6; Pang, Yu-Xuan4,5; Cheng, Cheng2,3; Lu KX(卢开兴)8,9,10; Wang JG(王建国)8,9,10; Li, Rui1
刊名ASTROPHYSICAL JOURNAL
出版日期2024-09-01
卷号972期号:1
ISSN号0004-637X
DOI10.3847/1538-4357/ad60c1
产权排序第1完成单位
文献子类Article
英文摘要Broad emission lines of active galactic nuclei (AGNs) originate from the broad-line region (BLR), consisting of dense gas clouds in orbit around an accreting supermassive black hole. Understanding the geometry and kinematics of this region is crucial for gaining insights into the physics and evolution of AGNs. Conventional velocity-resolved reverberation mapping may face challenges in disentangling the degeneracy between intricate motion and geometry of this region. To address this challenge, new key constraints are required. Here, we report the discovery of an asymmetric BLR using a novel technique: velocity-resolved ionization mapping, which can map the distance of emitting gas clouds by measuring Hydrogen line ratios at different velocities. By analyzing spectroscopic monitoring data, we find that the Balmer decrement is anticorrelated with the continuum and correlated with the lags across broad emission line velocities. Some line ratio profiles deviate from the expectations for a symmetrically virialized BLR, suggesting that the redshifted and blueshifted gas clouds may not be equidistant from the supermassive black hole (SMBH). This asymmetric geometry might represent a formation imprint, provide new perspectives on the evolution of AGNs, and influence SMBH mass measurements.
学科主题天文学 ; 星系与宇宙学
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词ACTIVE GALACTIC NUCLEI ; SUPERMASSIVE BLACK-HOLE ; LONG-TERM VARIABILITY ; H-BETA EMISSION ; MONITORING PROJECT ; ACCRETION DISKS ; SPECTROSCOPIC CAMPAIGN ; SPECTRAL VARIABILITY ; SPACE TELESCOPE ; EVOLUTION
资助项目National Key R&D Program of China[2021YFA1600404]; National Natural Science Foundation of China[12303022]; National Natural Science Foundation of China[12203096]; National Natural Science Foundation of China[12373018]; National Natural Science Foundation of China[11991051]; Yunnan Fundamental Research Projects[202301AT070358]; Yunnan Fundamental Research Projects[202301AT070339]; Yunnan Postdoctoral Research Foundation Funding Project, Special Research Assistant Funding Project of Chinese Academy of Sciences; Science research grants from the China Manned Space Project[CMS-CSST-2021-A06]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001299493700001
出版者IOP Publishing Ltd
资助机构National Key R&D Program of China[2021YFA1600404] ; National Natural Science Foundation of China[12303022, 12203096, 12373018, 11991051] ; Yunnan Fundamental Research Projects[202301AT070358, 202301AT070339] ; Yunnan Postdoctoral Research Foundation Funding Project, Special Research Assistant Funding Project of Chinese Academy of Sciences ; Science research grants from the China Manned Space Project[CMS-CSST-2021-A06]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27570]  
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
星系类星体研究组
作者单位1.School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, People's Republic of China
2.CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China;
3.Chinese Academy of Sciences, South America Center for Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China;
4.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China;
5.Department of Astronomy, School of Physic, Peking University, Beijing 100871, People's Republic of China;
6.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People's Republic of China;
7.Key Laboratory of Radio Astronomy and Technology, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, People's Republic of China;
8.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China;
9.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, Yunnan, People's Republic of China; htliu@ynao.ac.cn;
10.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, Yunnan, People's Republic of China; hcfeng@ynao.ac.cn;
推荐引用方式
GB/T 7714		 Li SS,Feng HC,Liu HT,et al. Velocity-resolved Ionization Mapping of Broad Line Region. I. Insights into Diverse Geometry and Kinematics[J]. ASTROPHYSICAL JOURNAL,2024,972(1).
APA 李莎莎.,封海成.,刘洪涛.,白金明.,Ji, Xiang.,...&Li, Rui.(2024).Velocity-resolved Ionization Mapping of Broad Line Region. I. Insights into Diverse Geometry and Kinematics.ASTROPHYSICAL JOURNAL,972(1).
MLA 李莎莎,et al."Velocity-resolved Ionization Mapping of Broad Line Region. I. Insights into Diverse Geometry and Kinematics".ASTROPHYSICAL JOURNAL 972.1(2024).

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