A Fundamental Relation Between Supermassive Black Holes and Their Host Galaxies

Details A Fundamental Relation Between Supermassive Black Holes and Their Host Galaxies A Fundamental Relation Between Supermassive Black Holes and Their Host Galaxies

2000-06-04

arxiv.org/abs/astro-ph/0006053v2

Astrophys.J. 539 (2000) L9

Astronomy and Astrophysics

Astrophysics

ApJ, 539, L9. Rutgers Astrophysics Preprint Series No. 274 This version is slightly modified to fit within the ApJL page limit

Scientific paper

10.1086/312838

The masses of supermassive black holes correlate almost perfectly with the velocity dispersions of their host bulges, M(BH) ~ sigma^alpha, where alpha =4.8 +/- 0.5$. The relation is much tighter than the relation between M(BH) and bulge luminosity, with a scatter no larger than expected on the basis of measurement error alone. Black hole masses estimated by Magorrian et al. (1998) lie systematically above the M(BH)-sigma relation defined by more accurate mass estimates, some by as much as two orders of magnitude. The tightness of the M(BH)-sigma relation implies a strong link between black hole formation and the properties of the stellar bulge.

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