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Accurate AGN Black Hole Masses and the Scatter in the MBH–Lbulge Relationship

Published online by Cambridge University Press:  03 June 2010

C. Martin Gaskell
C. Martin Gaskell*
Affiliation:
Astronomy Department, University of Texas, Austin, TX 78712-0259, USA Email: gaskell@astro.as.utexas.edu
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Abstract

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A new empirical formulae is given for estimating the masses of black holes in AGNs from the Hβ velocity dispersion and the continuum luminosity at 5100 Å. It is calibrated to reverberation-mapping and stellar-dynamical estimates of black hole masses. The resulting mass estimates are as accurate as reverberation-mapping and stellar-dynamical estimates. The new mass estimates show that there is very little scatter in the MBH–Lbulge relationship for high-luminosity galaxies, and that the scatter increases substantially in lower-mass galaxies.

Keywords

black hole physicsgalaxies: activegalaxies: bulgesgalaxies: fundamental parametersgalaxies: nucleiquasars: emission lines
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S267: Co-Evolution of Central Black Holes and Galaxies , August 2009 , pp. 203
Copyright
Copyright © International Astronomical Union 2010

References

Gaskell, C. M. 2009, submitted to ApJ [arXiv:0908.0328]Google Scholar