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Supermassive black hole masses of AGNs with elliptical hosts
Wu, XB; Liu, FK; Zhang, TZ
2002-07-01
Source PublicationASTRONOMY & ASTROPHYSICS
Volume389Issue:3Pages:742-751
AbstractThe 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.
KeywordBlack Hole Physics Bl Lacertae Objects : General Galaxies : Active Galaxies : Nuclei Quasars : General
DOI10.1051/0004-6361:20020577
Indexed BySCI
Language英语
WOS IDWOS:000176877800005
Citation statistics
Cited Times:49[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8650
Collection应用天文研究部
Affiliation1.Peking Univ, Natl Astron Observ, CAS, Beijing 100871, Peoples R China
2.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Wu, XB,Liu, FK,Zhang, TZ. Supermassive black hole masses of AGNs with elliptical hosts[J]. ASTRONOMY & ASTROPHYSICS,2002,389(3):742-751.
APA Wu, XB,Liu, FK,&Zhang, TZ.(2002).Supermassive black hole masses of AGNs with elliptical hosts.ASTRONOMY & ASTROPHYSICS,389(3),742-751.
MLA Wu, XB,et al."Supermassive black hole masses of AGNs with elliptical hosts".ASTRONOMY & ASTROPHYSICS 389.3(2002):742-751.
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