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

doi:10.3847/1538-4365/ab0ec5

CORC > 国家天文台 > 中国科学院国家天文台

	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-Rong 2; Wang, Jian-Min 2,3,4; Zhang, Zhi-Xiang 2; Wang, Kai 2; Huang, Ying-Ke 2; Lu, Kai-Xing 5; Hu, Chen 2; Du, Pu 2; Bon, Edi 6; Ho, Luis C.7,8
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2019-04-01
卷号	241 期号:2 页码:14
关键词	galaxies: active galaxies: individual (Ark 120) methods: data analysis methods: statistical quasars: general
ISSN号	0067-0049
DOI	10.3847/1538-4365/ab0ec5
英文摘要	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]
WOS关键词	BLACK-HOLE BINARIES ; EMISSION-LINE VARIABILITY ; GALAXY AKN 120 ; EMITTING REGION ; CONTINUUM ; LUMINOSITY ; SAMPLE ; QUASAR ; MASS ; PROFILES
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000464712500001
资助机构	National Key R&D Program of China ; National Key R&D Program of China ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS) ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC ; NSFC ; Strategic Priority Research Program of the CAS ; Strategic Priority Research Program of the CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Light of West China Program of the CAS ; Light of West China Program of the CAS ; Kavli Foundation ; Kavli Foundation ; Peking University ; Peking University ; Ministry of Education and Science of Serbia through the project "Astrophysical Spectroscopy of Extragalactic Objects" ; Ministry of Education and Science of Serbia through the project "Astrophysical Spectroscopy of Extragalactic Objects" ; Ministry of Education and Science of Serbia through the project "Gravitation and structure of universe on large scales" ; Ministry of Education and Science of Serbia through the project "Gravitation and structure of universe on large scales" ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS) ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC ; NSFC ; Strategic Priority Research Program of the CAS ; Strategic Priority Research Program of the CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Light of West China Program of the CAS ; Light of West China Program of the CAS ; Kavli Foundation ; Kavli Foundation ; Peking University ; Peking University ; Ministry of Education and Science of Serbia through the project "Astrophysical Spectroscopy of Extragalactic Objects" ; Ministry of Education and Science of Serbia through the project "Astrophysical Spectroscopy of Extragalactic Objects" ; Ministry of Education and Science of Serbia through the project "Gravitation and structure of universe on large scales" ; Ministry of Education and Science of Serbia through the project "Gravitation and structure of universe on large scales" ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS) ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC ; NSFC ; Strategic Priority Research Program of the CAS ; Strategic Priority Research Program of the CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Light of West China Program of the CAS ; Light of West China Program of the CAS ; Kavli Foundation ; Kavli Foundation ; Peking University ; Peking University ; Ministry of Education and Science of Serbia through the project "Astrophysical Spectroscopy of Extragalactic Objects" ; Ministry of Education and Science of Serbia through the project "Astrophysical Spectroscopy of Extragalactic Objects" ; Ministry of Education and Science of Serbia through the project "Gravitation and structure of universe on large scales" ; Ministry of Education and Science of Serbia through the project "Gravitation and structure of universe on large scales" ; National Key R&D Program of China ; National Key R&D Program of China ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS) ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; NSFC ; NSFC ; Strategic Priority Research Program of the CAS ; Strategic Priority Research Program of the CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Light of West China Program of the CAS ; Light of West China Program of the CAS ; Kavli Foundation ; Kavli Foundation ; Peking University ; Peking University ; Ministry of Education and Science of Serbia through the project "Astrophysical Spectroscopy of Extragalactic Objects" ; Ministry of Education and Science of Serbia through the project "Astrophysical Spectroscopy of Extragalactic Objects" ; Ministry of Education and Science of Serbia through the project "Gravitation and structure of universe on large scales" ; Ministry of Education and Science of Serbia through the project "Gravitation and structure of universe on large scales"
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/26028]
专题	中国科学院国家天文台
通讯作者	Li, Yan-Rong
作者单位	1.Isaac Newton Inst Chile, Yugoslavia Branch, Belgrade, Serbia 2.Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, 19B Yuquan Rd, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ China, 20A Datun Rd, Beijing 100012, Peoples R China 4.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China 6.Astron Observ, Belgrade, Serbia 7.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 8.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China 9.Nanjing Normal Univ, Dept Phys, Nanjing 210097, Jiangsu, Peoples R China 10.Univ Sci & Technol China, Dept Astron, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	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.