"Velocity Dispersion and Black Hole Mass in Seyfert 1 Galaxies"
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Authors
Nelson, Charles H.
Green, Richard
Bower, Gary
Gebhardt, Karl
Weistrop, Donna
Issue Date
2003
Type
Presentation
Language
en_US
Keywords
Blackholes , Seyfert Galaxies , Quasars , Galaxies , Astronomy
Alternative Title
Abstract
Bulge stellar velocity dispersions, sigma, in Seyfert 1 galaxies are combined with the M_bh -- sigma relation to validate reverberation mapping as a means of determining nuclear black hole masses. Seyfert galaxies follow the same relation as non-active galaxies, indicating that reverberation mapping is consistent with other methods. A similar result is obtained using new high resolution profiles of the [OIII] 5007 line for PG Quasars. Reconsidering the M_bulge - M_bh relation, we attempt to explain differences between Seyfert and non-active galaxies. We suggest that Seyfert bulges are systematically brighter than non-active galaxies, having lower M/L and younger stellar populations.
Description
Paper presented at Carnegie Observatories Centennial Symposium I - Coevolution of Black Holes and Galaxies, 20-25 October 2002, Carnegie Observatories, Pasadena, CA.