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A Possible similar to 20 yr Periodicity in Long-term Optical Photometric and Spectral Variations of the Nearby Radio-quiet Active Galactic Nucleus Ark 120
Li, Yan-Rong1; Wang, Jian-Min1,2,3; Zhang, Zhi-Xiang1; Wang, Kai1; Huang, Ying-Ke1; Lu KX(卢开兴)4; Hu, Chen1; Du, Pu1; Bon, Edi5; Ho, Luis C.6,7; Bai JM(白金明)4; Bian, Wei-Hao8; Yuan, Ye-Fei9; Winkler, Hartmut10; Denissyuk, Eduard K.11; Valiullin, Rashit R.11; Bon, Natasa5; Popovic, Luka C.5,12
发表期刊ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2019-04-01
卷号241期号:2页码:14
DOI10.3847/1538-4365/ab0ec5
产权排序第4完成单位
收录类别SCI
关键词galaxies: active galaxies: individual (Ark 120) methods: data analysis methods: statistical quasars: general
摘要

We study the long-term variability in the optical monitoring database of Ark 120, a nearby radio-quiet active galactic nucleus (AGN) at a distance of 143 Mpc (z = 0.03271). We compiled the historical archival photometric and spectroscopic data since 1974 and conducted a new two-year monitoring campaign in 2015-2017, resulting in a total temporal baseline over four decades. The long-term variations in the optical continuum exhibit a wave-like pattern and the H beta integrated flux series varies with a similar behavior. The broad H beta profiles have asymmetric double peaks, which change strongly with time and tend to merge into a single peak during some epochs. The period in the optical continuum determined from various period-search methods is about 20 yr, and the estimated false alarm probability with null hypothesis simulations is about 1 x 10 (-3). The overall variations of the broad H beta profiles also follow the same period. However, the present database only covers two cycles of the suggested period, which strongly encourages continued monitoring to track more cycles and confirm the periodicity. Nevertheless, in light of the possible periodicity and the complicated H beta profile, Ark 120 is one candidate of the nearest radio-quiet AGNs with possible periodic variability, and it is thereby a potential candidate host for a sub-parsec supermassive black hole binary.

资助项目National Key R&D Program of China[2016YFA0400701] ; National Key R&D Program of China[2016YFA0400702] ; National Key R&D Program of China[2017YFA0402703] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS)[QYZDJ-SSW-SLH007] ; National Natural Science Foundation of China (NSFC)[11690024] ; National Natural Science Foundation of China (NSFC)[11773029] ; National Natural Science Foundation of China (NSFC)[11833008] ; National Natural Science Foundation of China (NSFC)[11873048] ; National Natural Science Foundation of China (NSFC)[U1431228] ; NSFC[11573026] ; Strategic Priority Research Program of the CAS[XDB23000000] ; Strategic Priority Research Program of the CAS[XDB23010400] ; Youth Innovation Promotion Association CAS ; Light of West China Program of the CAS[Y7XB016001] ; Kavli Foundation ; Peking University ; Ministry of Education and Science of Serbia through the project "Astrophysical Spectroscopy of Extragalactic Objects"[176001] ; Ministry of Education and Science of Serbia through the project "Gravitation and structure of universe on large scales"[176003]
项目资助者National Key R&D Program of China[2016YFA0400701, 2016YFA0400702, 2017YFA0402703] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS)[QYZDJ-SSW-SLH007] ; National Natural Science Foundation of China (NSFC)[11690024, 11773029, 11833008, 11873048, U1431228] ; NSFC[11573026] ; Strategic Priority Research Program of the CAS[XDB23000000, XDB23010400] ; Youth Innovation Promotion Association CAS ; Light of West China Program of the CAS[Y7XB016001] ; Kavli Foundation ; Peking University ; Ministry of Education and Science of Serbia through the project "Astrophysical Spectroscopy of Extragalactic Objects"[176001] ; Ministry of Education and Science of Serbia through the project "Gravitation and structure of universe on large scales"[176003]
语种英语
学科领域天文学 ; 星系与宇宙学 ; 星系天文学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0067-0049
URL查看原文
WOS记录号WOS:000464712500001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]BLACK-HOLE BINARIES ; EMISSION-LINE VARIABILITY ; GALAXY AKN 120 ; EMITTING REGION ; CONTINUUM ; LUMINOSITY ; SAMPLE ; QUASAR ; MASS ; PROFILES
引用统计
被引频次:31[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/20090
专题南方基地
通讯作者Li, Yan-Rong
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
2.National Astronomical Observatories of China, Chinese Academy of Sciences, 20A Datun Road, Beijing 100012, People's Republic of China
3.School of Astronomy and Space Science, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, People's Republic of China
4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
5.Astronomical Observatory, Belgrade, Serbia
6.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China
7.Department of Astronomy, School of Physics, Peking University, Beijing 100871, People's Republic of China
8.Physics Department, Nanjing Normal University, Nanjing 210097, People's Republic of China
9.Department of Astronomy, University of Science and Technology of China, Hefei 230026, People's Republic of China
10.Department of Physics, University of Johannesburg, P.O. Box 524, 2006 Auckland Park, Johannesburg, South Africa
11.V.G. Fesenkov Astrophysical Institute, Almaty, Kazakhstan
12.Isaac Newton Institute of Chile, Yugoslavia Branch Belgrade, Serbia
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Li, Yan-Rong,Wang, Jian-Min,Zhang, Zhi-Xiang,et al. A Possible similar to 20 yr Periodicity in Long-term Optical Photometric and Spectral Variations of the Nearby Radio-quiet Active Galactic Nucleus Ark 120[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2019,241(2):14.
APA Li, Yan-Rong.,Wang, Jian-Min.,Zhang, Zhi-Xiang.,Wang, Kai.,Huang, Ying-Ke.,...&Popovic, Luka C..(2019).A Possible similar to 20 yr Periodicity in Long-term Optical Photometric and Spectral Variations of the Nearby Radio-quiet Active Galactic Nucleus Ark 120.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,241(2),14.
MLA Li, Yan-Rong,et al."A Possible similar to 20 yr Periodicity in Long-term Optical Photometric and Spectral Variations of the Nearby Radio-quiet Active Galactic Nucleus Ark 120".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 241.2(2019):14.
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