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Supermassive black holes in BL Lacertae objects: Estimated masses and their relation to nuclear luminosity
Xie GZ(谢光中)1,2,3; Liang EW(梁恩维)1,2,4; Xie, ZH5; Dai BZ(戴本忠)1,2; Xie, GZ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊ASTRONOMICAL JOURNAL
2002-05
卷号123期号:5页码:2352-2357
DOI10.1086/339974
产权排序第1完成单位
收录类别SCI
关键词Bl Lacertae Objects : General Black Hole Physics Galaxies : Active Galaxies : Nuclei
摘要We compile a sample of 13 BL Lac objects for which rapid optical variabilities are reliably established and luminosities of the nuclei and the host galaxies have been well observed by the Hubble Space Telescope (HST). We present a new method for estimating the masses of the supermassive black holes (SMBHs) at the centers of these objects using the rapid optical variability, and find that the masses of the SMBHs range from 10(7.42) to 10(9.19) M(.). This mass range is quite similar to that of dark compact objects in galaxies. To further investigate the reliability of our method, we also compile another sample with nine high-energy gamma-ray emission sources of BL Lac objects and obtain the masses for the SMBHs in these objects using the Dermer & Gehrels method. We find that the masses derived from these two methods are quite similar. These results strongly imply that the estimation of masses of SMBHs by rapid optical variability is reliable. We examine the correlations of the masses with the luminosities of the nuclei and the host galaxies observed by HST, and find that the masses are significantly correlated with the luminosities of the nuclei, but not correlated with the luminosities of host galaxies at all. In addition, we examine the relation between the observed minimal time-scale of variation and the bolometric luminosities of the objects. We find that they obey the Abromowicz & Nobili relation. These results possibly imply that the luminosities of the nuclei are produced by accretion of the central SMBHs.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6256
URL查看原文
归档日期2002-10-14
WOS记录号WOS:000175311200014
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ACTIVE GALACTIC NUCLEI ; RAY-LOUD BLAZARS ; HOST GALAXIES ; RADIO-SOURCES ; VARIABILITY ; QUASARS ; SEARCH ; MODEL
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6950
专题星系研究组
通讯作者Xie, GZ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位1.Yunnan Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Yunnan Astrophysics Center, Yunnan University, Kunming 650091, China
3.Yunnan Astrophysics Center, Yunnan Normal University, Kunming 650091, China
4.Physics Department, Guangxi University, Guangxi 530004, China
5.Department of Physics, University of Hong Kong, Hong Kong, China
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GB/T 7714
Xie GZ,Liang EW,Xie, ZH,et al. Supermassive black holes in BL Lacertae objects: Estimated masses and their relation to nuclear luminosity[J]. ASTRONOMICAL JOURNAL,2002,123(5):2352-2357.
APA Xie GZ,Liang EW,Xie, ZH,Dai BZ,&Xie, GZ .(2002).Supermassive black holes in BL Lacertae objects: Estimated masses and their relation to nuclear luminosity.ASTRONOMICAL JOURNAL,123(5),2352-2357.
MLA Xie GZ,et al."Supermassive black holes in BL Lacertae objects: Estimated masses and their relation to nuclear luminosity".ASTRONOMICAL JOURNAL 123.5(2002):2352-2357.
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