Dwarf Seyfert 1 Nuclei and the Low-Mass End of the M-sigma Relation
Abstract
To examine the relationship between black hole mass and host galaxy velocity dispersion for low black hole masses, we have measured the velocity dispersions of 15 Seyfert 1 galaxies from the catalog of Greene & Ho (2004). These Seyferts were selected from the Sloan Digital Sky Survey to have estimated black hole masses below 10^6 solar masses. The data are consistent with a straightforward downward extrapolation of the local M-sigma relation, indicating that this correlation extends over a range of more than four orders of magnitude in black hole mass. The rms scatter of the sample about the extrapolated M-sigma relation is 0.57 dex, consistent with the expected scatter of single-epoch mass estimates for Seyfert 1 galaxies.
Keywords
Cite
@article{arxiv.astro-ph/0412575,
title = {Dwarf Seyfert 1 Nuclei and the Low-Mass End of the M-sigma Relation},
author = {A. J. Barth and J. E. Greene and L. C. Ho},
journal= {arXiv preprint arXiv:astro-ph/0412575},
year = {2009}
}
Comments
To appear in ApJ Letters. 4 pages