Bibcode
Treves, A.; Carangelo, N.; Falomo, R.; Urry, C. M.; O'Dowd, M.; Scarpa, R.
Referencia bibliográfica
Issues in Unification of Active Galactic Nuclei, ASP Conference Proceedings, Vol. 258. Edited by Roberto Maiolino, Alessandro Marconi, and Neil Nagar. ISBN: 1-58381-098-6. San Francisco: Astronomical Society of the Pacific, 2002., p.303
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2002
Número de citas
8
Número de citas referidas
4
Descripción
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.