The demography of massive central black holes

Details The demography of massive central black holes The demography of massive central black holes

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...18911104m&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #111.04; Bulletin of the American Astronomical Society, Vol. 28, p.1423

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There are currently around 10 galaxies for which there is strong evidence for a massive central black hole. Kormendy & Richstone have pointed out a striking correlation between galaxy and BH mass, namely M_bh ~ 0.004M_gal. An interesting question is whether this correlation is due to a narrow ridge in the probability distribution p(M_bh|M_gal), or whether it is merely a selection effect. We attempt to answer this question using a sample of 36 galaxies for which HST photometry and ground-based kinematics are available. Each galaxy is assumed to be axisymmetric, with an arbitrary inclination angle, and a central BH of arbitrary mass. Moreover, each is assumed to be well described by a two-integral DF. These assumptions allow us to calculate the likelihood of the sample given any p(M_bh|M_gal), and thus to calculate bookmakers' odds for different assumed forms for the latter.

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