The Fundamental Plane for Nuclear Black Hole Masses

Details The Fundamental Plane for Nuclear Black Hole Masses The Fundamental Plane for Nuclear Black Hole Masses

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21114407g&link_type=abstract

American Astronomical Society, AAS Meeting #211, #144.07; Bulletin of the American Astronomical Society, Vol. 39, p.997

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the latest analysis of the relationship between nuclear black hole mass and properties of the host galaxy or bulge, notably stellar velocity dispersion. This analysis includes six new measurements of black hole masses based on observations with HST using STIS and WFPC2 as well as the most recent results from the literature for a total of about 50 dynamical black hole mass measurements. We also include in our analysis, for the first time, 15 measured upper limits on black hole mass.
Studies of supermassive black holes in galaxy centers have led to the discoveries that most or all hot galaxies contain massive dark objects at their centers, presumably black holes; and that there is a remarkably tight correlation between the black-hole mass and the luminosity-weighted velocity dispersion of the hot component of the galaxy. This M-sigma relationship suggests a strong link between black-hole formation, AGN activity, and galaxy formation, and once it is understood, this link should advance our understanding of all three processes. In this work we (1) present the most current fit to the M-sigma relation; (2) measure the scatter in the relation, which previous studies claim to be consistent with zero scatter; and (3) investigate the role of possible second parameters in predicting black hole mass, that is a fundamental plane relationship.

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