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• W2110833048 endingPage "207" @default.
• W2110833048 startingPage "199" @default.
• W2110833048 abstract "The central black hole masses of a sample of 30 luminous quasars are estimated using Hβ full width half-maximum (FWHM) measurements from a combination of new and previously published nuclear spectra. The quasar black hole mass estimates are combined with reverberation-mapping measurements for a sample of Seyfert galaxies in order to study active galatic nucleus (AGN) black hole masses over a wide range in nuclear luminosity. The link between bulge luminosity and black hole mass is investigated using two-dimensional disc/bulge decompositions of the host galaxy images, the vast majority of which are high-resolution Hubble Space Telescope (HST) observations. It is found that black hole mass and bulge luminosity are well correlated and follow a relation consistent with that expected if black hole and bulge mass are directly proportional. Contrary to the recent results of Wandel, no evidence that Seyfert galaxies follow a different relation to quasars is found. However, the black hole mass distributions of the radio-loud and radio-quiet quasar subsamples are found to be significantly different, with the median black hole mass of the radio-loud quasars a factor of three larger than their radio-quiet counterparts. Finally, utilizing the elliptical galaxy fundamental plane to provide stellar velocity dispersion estimates, a comparison is performed between the virial Hβ black hole mass estimates and those of the correlations of Gebhardt et al. and Merritt & Ferrarese. With the disc geometry of the broad-line region adopted in this paper, the virial Hβ black hole masses indicate that the correct normalization of the black hole versus bulge mass relation is , while the standard assumption of purely random broad-line velocities leads to . The normalization of provided by the disc model is in remarkably good agreement with that inferred for our quasar sample using the (completely independent) correlations." @default.
• W2110833048 created "2016-06-24" @default.
• W2110833048 creator A5039140400 @default.
• W2110833048 creator A5057206732 @default.
• W2110833048 date "2001-10-01" @default.
• W2110833048 modified "2023-09-25" @default.
• W2110833048 title "The black hole masses of Seyfert galaxies and quasars" @default.
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• W2110833048 doi "https://doi.org/10.1046/j.1365-8711.2001.04709.x" @default.
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