Investigation on young radio AGNs based on SDSS spectroscopy

doi:10.1093/mnras/stz2981

CORC > 国家天文台 > 中国科学院国家天文台

	Investigation on young radio AGNs based on SDSS spectroscopy
	Liao, Mai 1,2; Gu, Minfeng 1
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2020
卷号	491 期号:1 页码:92-112
关键词	accretion, accretion discs galaxies: active galaxies: evolution quasars: emission lines quasars: supermassive black holes
ISSN号	0035-8711
DOI	10.1093/mnras/stz2981
英文摘要	The gigahertz peaked spectrum (GPS) sources, compact steep spectrum (CSS) radio sources, and high-frequency peaker (HFP) radio sources are thought to be young radio active galactic nuclei (AGNs) at the early stage of AGN evolution. We investigated the optical properties of the largest sample of 126 young radio AGNs based on the spectra in SDSS DR12. We find that the black hole masses M-BH range from 10(7.32) to 10(9.84) M-circle dot and the Eddington ratios Redd vary from 10(-4.93) to 10(0.37), suggesting that young radio AGNs have various accretion activities and not all are accreting at high accretion rate. Our young radio sources generally follow the evolutionary trend towards large-scale radio galaxies with increasing linear size and decreasing accretion rate in the radio power-linear size diagram. The radio properties of low-luminosity young radio AGNs with low R-edd are discussed. The line width of [O III] lambda 5007 core (sigma([O III])) is found to be a good surrogate of stellar velocity dispersion sigma(*). The radio luminosity L-5 GHz correlates strongly with [O III] core luminosity L-[O III], suggesting that radio activity and accretion are closely related in young radio sources. We find one object that can be defined as a narrow-line Seyfert 1 galaxy, representing a population of young AGNs with both young jet and early accretion activity. The optical variabilities of 15 quasars with multi-epoch spectroscopy were investigated. Our results show that the optical variability in young AGN quasars presents low variations (<= 60 per cent) similar to the normal radio-quiet quasars.
资助项目	National Science Foundation of China[11873073] ; National Science Foundation of China[U1531245] ; National Science Foundation of China[11773056] ; National Science Foundation of China[11473054] ; National Science Foundation of China[U1831138] ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; CAS ; People's Government of Yunnan Province
WOS关键词	COMPACT STEEP-SPECTRUM ; ACTIVE GALACTIC NUCLEI ; HIGH-FREQUENCY PEAKERS ; BLACK-HOLE MASSES ; LINE SEYFERT-1 GALAXIES ; DIGITAL SKY SURVEY ; VELOCITY DISPERSION ; GASEOUS KINEMATICS ; VLA OBSERVATIONS ; CORALZ SAMPLE
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000512163600008
资助机构	National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; CAS ; CAS ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; CAS ; CAS ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; CAS ; CAS ; People's Government of Yunnan Province ; People's Government of Yunnan Province ; National Science Foundation of China ; National Science Foundation of China ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy Office of Science ; U.S. Department of Energy Office of Science ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; CAS ; CAS ; People's Government of Yunnan Province ; People's Government of Yunnan Province
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/54133]
专题	中国科学院国家天文台
通讯作者	Liao, Mai; Gu, Minfeng
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liao, Mai,Gu, Minfeng. Investigation on young radio AGNs based on SDSS spectroscopy[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,491(1):92-112.
APA	Liao, Mai,&Gu, Minfeng.(2020).Investigation on young radio AGNs based on SDSS spectroscopy.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,491(1),92-112.
MLA	Liao, Mai,et al."Investigation on young radio AGNs based on SDSS spectroscopy".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 491.1(2020):92-112.