Monitoring AGNs with Hβ Asymmetry. V. Long-term Variation and Evolution of the Broad Hβ Emission-line Profiles
文献类型：期刊论文
| 作者 | Fang, Feng-Na1,2; Du, Pu1; Brotherton, Michael S.3; McLane, Jacob N.3; Zastrocky, T. E.3,4; Olson, Kianna A.3; Bao, Dong-Wei5; Zhai, Shuo5; Bai, Hua-Rui1,2; Fu, Yi-Xin1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| 出版日期 | 2025-06-01 |
| 卷号 | 278期号:2 |
| ISSN号 | 0067-0049 |
| DOI | 10.3847/1538-4365/adcc26 |
| 产权排序 | 第20完成单位 |
| 文献子类 | Article |
| 英文摘要 | The physical origins of the diverse emission-line asymmetries observed in the spectra of active galactic nuclei (AGNs) are not completely understood. Monitoring the temporal variations of line profiles offers a promising approach to investigating the underlying physics. In this study, we present an analysis of the broad H beta emission line profiles of eight AGNs observed from 2016-2023 May as part of the reverberation mapping campaign titled Monitoring AGNs with H beta Asymmetry, utilizing data obtained from the Wyoming Infrared Observatory 2.3 m telescope. We measure the temporal variations of line asymmetry, width, and central velocity shift for the eight objects. Our findings reveal that the variation in asymmetry is positively correlated with H beta flux in five of the eight objects, while the remaining objects exhibit negative or complex correlations. Furthermore, we observe anticorrelations between line width and H beta flux for most objects, indicating the presence of the breathing phenomenon in their H beta emission lines. In contrast, two objects demonstrate an anti-breathing phenomenon or complex behavior. We discuss the physical origins of the temporal variations in line profiles and propose the possibility of decomposing the variations in H beta asymmetry and width into components: one that corresponds to short-term variations in H beta flux and another that reflects long-term variations in continuum light curves, perhaps driven by radiation pressure. |
| 学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 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 ; DIGITAL SKY SURVEY ; REVERBERATION MAPPING PROJECT ; SUPERMASSIVE BLACK-HOLES ; VELOCITY-DELAY MAPS ; HIGH ACCRETION RATES ; SEYFERT-GALAXIES ; SPECTRAL VARIABILITY ; NGC 3227 ; MRK 79 |
| 资助项目 | MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809; Copernico telescope (Asiago, Italy) of the INAF-Osservatorio Astronomico di Padova[2022YFF0503401]; National Key R&D Program of China[QYZDJ-SSW-SLH007]; Key Research Program of Frontier Sciences, CAS[CMS-CSST-2021-A04]; Key Research Program of Frontier Sciences, CAS[CMS-CSST-2021-A06]; China Manned Space Project[11991052]; China Manned Space Project[12233001]; National Science Foundation of China; Wyoming NASA Space Grant Consortium[80NSSC20M0113]; NASA |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001500578600001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809 ; Copernico telescope (Asiago, Italy) of the INAF-Osservatorio Astronomico di Padova[2022YFF0503401] ; National Key R&D Program of China[QYZDJ-SSW-SLH007] ; Key Research Program of Frontier Sciences, CAS[CMS-CSST-2021-A04, CMS-CSST-2021-A06] ; China Manned Space Project[11991052, 12233001] ; National Science Foundation of China ; Wyoming NASA Space Grant Consortium[80NSSC20M0113] ; NASA |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28329]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 作者单位 | 1.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, People's Republic of China; dupu@ihep.ac.cn; 2.School of Physical Science, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, People's Republic of China; 3.Department of Physics and Astronomy, University of Wyoming, Laramie, WY 82071, USA; mbrother@uwyo.edu; 4.Physics and Astronomy Department, Regis University, Denver, CO 80212, USA; 5.National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, People's Republic of China; 6.Shanghai Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People's Republic of China; 7.Dongguan Neutron Science Center, 1 Zhongziyuan Road, Dongguan 523808, People's Republic of China; 8.Department of Physics & Astronomy, Cal Poly Pomona, Pomona, CA 91768, USA; 9.Department of Physics and Astronomy, Trinity University, San Antonio, TX 78212, USA; 10.Department of Physics, Rhodes College, Memphis, TN 38112, USA; |
| 推荐引用方式 GB/T 7714 | Fang, Feng-Na,Du, Pu,Brotherton, Michael S.,et al. Monitoring AGNs with Hβ Asymmetry. V. Long-term Variation and Evolution of the Broad Hβ Emission-line Profiles[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2025,278(2). |
| APA | Fang, Feng-Na.,Du, Pu.,Brotherton, Michael S..,McLane, Jacob N..,Zastrocky, T. E..,...&Wang, Jian-Min.(2025).Monitoring AGNs with Hβ Asymmetry. V. Long-term Variation and Evolution of the Broad Hβ Emission-line Profiles.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,278(2). |
| MLA | Fang, Feng-Na,et al."Monitoring AGNs with Hβ Asymmetry. V. Long-term Variation and Evolution of the Broad Hβ Emission-line Profiles".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 278.2(2025). |
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来源：云南天文台
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