Dwarf Seyfert 1 Nuclei and the Low-Mass End of the M BH -σ Relation

  • Barth A
  • Greene J
  • Ho L
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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 recent catalog of Greene & Ho. These Seyfert galaxies were selected from the Sloan Digital Sky Survey to have estimated black hole masses below 10 6 M solar. The data are consistent with a straightforward downward extrapolation of the local M BH -σ relation, indicating that this correlation extends over a range of more than 4 orders of magnitude in black hole mass. The rms scatter of the sample about the extrapolated M BH -σ relation is 0.57 dex, consistent with the expected scatter of single-epoch mass estimates for Seyfert 1 galaxies.

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Barth, A. J., Greene, J. E., & Ho, L. C. (2005). Dwarf Seyfert 1 Nuclei and the Low-Mass End of the M BH -σ Relation. The Astrophysical Journal, 619(2), L151–L154. https://doi.org/10.1086/428365

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