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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, Xiao-Bo4,5; Zhou, Hongyan3,6; Liu, Wen-Juan4,5
2018-04-01
Source PublicationASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
ISSN0067-0049
Volume235Issue:2Pages:19
AbstractA 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.
Keywordgalaxies active - galaxies nuclei - galaxies Seyfert
Funding OrganizationNational Natural Science Foundation of China ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; "Light of West China" Program of Chinese Academy of Sciences (CAS) ; National Aeronautics and Space Administration (NASA) ; NASA ; National Science Foundation (NSF) ; National Natural Science Foundation of China ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; "Light of West China" Program of Chinese Academy of Sciences (CAS) ; National Aeronautics and Space Administration (NASA) ; NASA ; National Science Foundation (NSF) ; National Natural Science Foundation of China ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; "Light of West China" Program of Chinese Academy of Sciences (CAS) ; National Aeronautics and Space Administration (NASA) ; NASA ; National Science Foundation (NSF) ; National Natural Science Foundation of China ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; "Light of West China" Program of Chinese Academy of Sciences (CAS) ; National Aeronautics and Space Administration (NASA) ; NASA ; National Science Foundation (NSF)
DOI10.3847/1538-4365/aab88e
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
Language英语
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 ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; "Light of West China" Program of Chinese Academy of Sciences (CAS) ; National Aeronautics and Space Administration (NASA) ; NASA ; National Science Foundation (NSF) ; National Natural Science Foundation of China ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; "Light of West China" Program of Chinese Academy of Sciences (CAS) ; National Aeronautics and Space Administration (NASA) ; NASA ; National Science Foundation (NSF) ; National Natural Science Foundation of China ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; "Light of West China" Program of Chinese Academy of Sciences (CAS) ; National Aeronautics and Space Administration (NASA) ; NASA ; National Science Foundation (NSF) ; National Natural Science Foundation of China ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; "Light of West China" Program of Chinese Academy of Sciences (CAS) ; National Aeronautics and Space Administration (NASA) ; NASA ; National Science Foundation (NSF)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000430477600002
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/35567
Collection中国科学院国家天文台
Corresponding AuthorLiu, He-Yang
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, 20A Datun Rd, Beijing 100012, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Polar Res Inst China, 451 Jinqiao Rd, Shanghai 200136, Peoples R China
4.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China
5.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China
6.Univ Sci & Technol China, Chinese Acad Sci, Hefei 230026, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Liu, He-Yang,Yuan, Weimin,Dong, Xiao-Bo,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):19.
APA Liu, He-Yang,Yuan, Weimin,Dong, Xiao-Bo,Zhou, Hongyan,&Liu, Wen-Juan.(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),19.
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):19.
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