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

doi:10.3847/1538-4357/ad60c1

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	Velocity-resolved Ionization Mapping of Broad Line Region. I. Insights into Diverse Geometry and Kinematics
	Li SS(李莎莎)1,2,3,4 ; Feng HC(封海成)1,2,3,4 ; Liu HT(刘洪涛)1,2,3 ; Bai JM(白金明)1,2,3,4 ; Ji, Xiang 5; Pang, Yu-Xuan 6,7; Cheng, Cheng 8,9; Lu KX(卢开兴)1,2,3 ; Wang JG(王建国)1,2,3 ; Li, Rui 10
发表期刊	ASTROPHYSICAL JOURNAL
	2024-09-01
卷号	972 期号:1
DOI	10.3847/1538-4357/ad60c1
产权排序	第1完成单位
收录类别	SCI
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.
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]
项目资助者	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]
语种	英语
学科领域	天文学 ; 星系与宇宙学
文章类型	Article
出版者	IOP Publishing Ltd
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN	0004-637X
URL	查看原文
WOS记录号	WOS:001299493700001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	ACTIVE GALACTIC NUCLEI ; SUPERMASSIVE BLACK-HOLE ; LONG-TERM VARIABILITY ; H-BETA EMISSION ; MONITORING PROJECT ; ACCRETION DISKS ; SPECTROSCOPIC CAMPAIGN ; SPECTRAL VARIABILITY ; SPACE TELESCOPE ; EVOLUTION
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/27570
专题	南方基地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.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, Yunnan, People's Republic of China; [email protected]; 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, Yunnan, People's Republic of China; [email protected]; 3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China; 4.Key Laboratory of Radio Astronomy and Technology, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, People's Republic of China; 5.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People's Republic of China; 6.Department of Astronomy, School of Physic, Peking University, Beijing 100871, People's Republic of China; 7.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China; 8.Chinese Academy of Sciences, South America Center for Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China; 9.CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China; 10.School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, People's Republic of China
第一作者单位	中国科学院云南天文台
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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