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A Uniformly Selected Sample of Low-mass Black Holes in Seyfert 1 Galaxies. II. The SDSS DR7 Sample
Liu, He-Yang1,2,3; Yuan, Weimin1,2; Dong XB(董小波)4,5; Zhou, Hongyan3,6; Liu WJ(刘文娟)4,5
Source PublicationASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2018-04-01
Volume235Issue:2
DOI10.3847/1538-4365/aab88e
Contribution Rank第4完成单位
Indexed BySCI
KeywordGalaxies Active - Galaxies Nuclei - Galaxies Seyfert
Abstract

A new sample of 204 low-mass black holes (LMBHs) in active galactic nuclei (AGNs) is presented with black hole masses in the range of (1-20) x 10(5) M-circle dot. The AGNs are selected through a systematic search among galaxies in the Seventh Data Release (DR7) of the Sloan Digital Sky Survey (SDSS), and careful analyses of their optical spectra and precise measurement of spectral parameters. Combining them with our previous sample selected from SDSS DR4 makes it the largest LMBH sample so far, totaling over 500 objects. Some of the statistical properties of the combined LMBH AGN sample are briefly discussed in the context of exploring the low-mass end of the AGN population. Their X-ray luminosities follow the extension of the previously known correlation with the [O III] luminosity. The effective optical-to-X-ray spectral indices alpha(OX), albeit with a large scatter, are broadly consistent with the extension of the relation with the near-UV luminosity L-2500 (angstrom). Interestingly, a correlation of alpha(OX) with black hole mass is also found, with alpha(OX) being statistically flatter (stronger X-ray relative to optical) for lower black hole masses. Only 26 objects, mostly radio loud, were detected in radio at 20 cm in the FIRST survey, giving a radio-loud fraction of 4%. The host galaxies of LMBHs have stellar masses in the range of 10(8.8)-10(12.4) M-circle dot and optical colors typical of Sbc spirals. They are dominated by young stellar populations that seem to have undergone continuous star formation history.

Funding ProjectNational Natural Science Foundation of China[11473035] ; National Natural Science Foundation of China[11473062] ; National Program on Key Research and Development Project[2016YFA0400804] ; Natural Science Foundation of China[NSFC 11703079] ; "Light of West China" Program of Chinese Academy of Sciences (CAS) ; National Aeronautics and Space Administration (NASA) ; NASA ; National Science Foundation (NSF)
Funding OrganizationNational Natural Science Foundation of China[11473035, 11473062] ; National Program on Key Research and Development Project[2016YFA0400804] ; Natural Science Foundation of China[NSFC 11703079] ; "Light of West China" Program of Chinese Academy of Sciences (CAS) ; National Aeronautics and Space Administration (NASA) ; NASA ; National Science Foundation (NSF)
Language英语
Subject Area天文学 ; 星系与宇宙学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0067-0049
URL查看原文
WOS IDWOS:000430477600002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDIGITAL SKY SURVEY ; ACTIVE GALACTIC NUCLEI ; X-RAY-PROPERTIES ; RADIUS-LUMINOSITY RELATIONSHIP ; STAR-FORMING GALAXIES ; HOST GALAXIES ; EMISSION-LINE ; DATA RELEASE ; 1ST SURVEY ; ENERGY-DISTRIBUTION
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12208
Collection丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
Corresponding AuthorLiu, He-Yang
Affiliation1.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China
2.School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, People's Republic of China
3.Polar Research Institute of China, 451 Jinqiao Road, Shanghai 200136, People's Republic of China
4.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, People's Republic of China
5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan, 650011, People's Republic of China
6.The University of Sciences and Technology of China, Chinese Academy of Sciences, Hefei, Anhui, 230026, People's Republic of China
Recommended Citation
GB/T 7714
Liu, He-Yang,Yuan, Weimin,Dong XB,et al. A Uniformly Selected Sample of Low-mass Black Holes in Seyfert 1 Galaxies. II. The SDSS DR7 Sample[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2018,235(2).
APA Liu, He-Yang,Yuan, Weimin,Dong XB,Zhou, Hongyan,&Liu WJ.(2018).A Uniformly Selected Sample of Low-mass Black Holes in Seyfert 1 Galaxies. II. The SDSS DR7 Sample.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,235(2).
MLA Liu, He-Yang,et al."A Uniformly Selected Sample of Low-mass Black Holes in Seyfert 1 Galaxies. II. The SDSS DR7 Sample".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 235.2(2018).
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