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题名:
Supermassive black hole masses of AGNs with elliptical hosts
作者: Wu Xiangbin(吴相彬); Liu, FK; Zhang, TZ
关键词: black hole physics ; BL Lacertae objects : general ; galaxies : active ; galaxies : nuclei ; quasars : general
刊名: ASTRONOMY & ASTROPHYSICS
发表日期: 2002-07-01
DOI: 10.1051/0004-6361:20020577
卷: 389, 期:3, 页:742-751
收录类别: SCI
英文摘要: The recently discovered tight correlation between supermassive black hole mass and central velocity dispersion for both inactive and active galaxies suggests a possibility to estimate the black hole mass from the measured central velocity dispersion. However, for most AGNs it is difficult to measure the central velocity dispersions of their host galaxies directly with spectroscopic studies. In this paper we adopt the fundamental plane for ellipticals to estimate the central velocity dispersion and black hole mass for a number of AGNs with morphology parameters of their elliptical host galaxies obtained by the Hubble Space Telescope imaging observations. The estimated black hole masses of 63 BL Lac objects, 10 radio galaxies, 10 radio-loud quasars and 9 radio-quiet quasars are mostly in the range of 10(7.5) M. to 10(9) M.. No significant difference in black hole mass is found for high-frequency peaked BL Lacs and low-frequency peaked BL Lacs, as well as for radio galaxies and radio-loud quasars. The Eddington ratios of radio galaxies are substantially smaller than those of quasars. This suggests that the different observational features of these radio-loud AGNs may be mainly dominated by different accretion rate rather than by the black hole mass, which is in agreement with some evolutionary scenarios recently proposed for radio-loud AGNs. Different to some previous claims, we found that the derived mean black hole mass for radio-loud quasars is only slightly larger than that of radio-quiet quasars. Though the black hole mass distributions between radio-loud and radio-quiet quasars are statistically different, their Eddington ratio distributions are probably from the same population. In addition, we noted that the relation between black hole mass and host galaxy luminosity we obtained using the fundamental plane provides further arguments for a nonlinear scaling law between supermassive black hole mass and galactic bulge mass.
语种: 英语
WOS记录号: WOS:000176877800005
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内容类型: 期刊论文
URI标识: http://ir.bao.ac.cn/handle/114a11/8650
Appears in Collections:应用天文研究部_期刊论文

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作者单位: 1.Peking Univ, Natl Astron Observ, CAS, Beijing 100871, Peoples R China
2.Peking Univ, Dept Astron, Beijing 100871, Peoples R China

Recommended Citation:
Wu, XB,Liu, FK,Zhang, TZ. Supermassive black hole masses of AGNs with elliptical hosts[J]. ASTRONOMY & ASTROPHYSICS,2002,389(3):742-751.
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