Black Hole Mass Function from Velocity Dispersion and Luminosity

Details Black Hole Mass Function from Velocity Dispersion and Luminosity Black Hole Mass Function from Velocity Dispersion and Luminosity

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..396...89t&link_type=abstract

Formation and Evolution of Galaxy Disks ASP Conference Series, Vol. 396, Proceedings of the conference held 1-5 October, 2007 at

Astronomy and Astrophysics

Astronomy

Scientific paper

Black hole masses are tightly correlated with the stellar velocity dispersion σ of host galaxies, and slightly less-well correlated with the bulge luminosities L. The M_bullet-σ relation predicts fewer massive black holes than does the M_bullet-L relation. This is because the L-σ in black hole samples currently available is inconsistent with that in the samples from which the distributions of L or σ are based. This suggests that current black hole samples are biased and that the M_bullet-σ and M_bullet-L relations currently in the literature are also biased from their intrinsic values. Our analysis suggests that the bias in the M_bullet-σ relation is likely to be small, whereas the M_bullet-L relation is biased towards predicting more massive black holes for a given luminosity.

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