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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; Liu, He-Yang(Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, 20A Datun Rd, Beijing 100012, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2018-04-01
卷号235期号:2
DOI10.3847/1538-4365/aab88e
产权排序第4完成单位
收录类别SCI
关键词Galaxies Active - Galaxies Nuclei - Galaxies Seyfert
摘要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.
项目资助者National 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)
语种英语
学科领域天文学
文章类型Article
ISSN0067-0049
URL查看原文
WOS记录号WOS:000430477600002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DIGITAL SKY SURVEY ; ACTIVE GALACTIC NUCLEI ; X-RAY-PROPERTIES ; RADIUS-LUMINOSITY RELATIONSHIP ; STAR-FORMING GALAXIES ; HOST GALAXIES ; EMISSION-LINE ; DATA RELEASE ; 1ST SURVEY ; ENERGY-DISTRIBUTION
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12208
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Liu, He-Yang(Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, 20A Datun Rd, Beijing 100012, Peoples R China)
作者单位1.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
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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,&Liu, He-Yang.(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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