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Host galaxies, BH masses and Eddington ratio of radio-loud AGNs | | A. Treves
; N. Carangelo
; R. Falomo
; C. M. Urry
; M. O’Dowd
; R. Scarpa
; | | Date: |
6 Jul 2001 | | Subject: | astro-ph | | Affiliation: | Universita’ dell’Insubria), N. Carangelo (Universita’ dell’Insubria), R. Falomo (Osservatorio Astronomico di Padova), C. M. Urry (Space Telescope Science Institute), M. O’Dowd (Space Telescope Science Institute), R. Scarpa | | Abstract: | We compare the host galaxies properties of BL Lac objects with those of radio loud quasars (RLQs) imaged by the WFPC2 on board of HST. The considered objects (z<0.5) are always well resolved and their host galaxies satisfactorily modelled by ellipticals. After homogeneous treatment of the data we find RLQs hosts are systematically more luminous (by ~0.7 mag) with respect to the hosts of BL Lacs. Using the M_BH - L_bulge relation, derived for nearby elliptical galaxies, we have evaluated the central black hole masses of our sample of active galaxies. These data are discussed in conjunction with the nuclear luminosity and the Eddington ratio. | | Source: | arXiv, astro-ph/0107129 | | Services: | Forum | Review | PDF | Favorites | |
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