Dwarf seyfert 1 nuclei and the low-mass end of the MBH-σ relation

Aaron J. Barth, Jenny E. Greene, Luis C. Ho

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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. The data are consistent with a straightforward downward extrapolation of the local MBH-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 MBH-σ relation is 0.57 dex, consistent with the expected scatter of single-epoch mass estimates for Seyfert 1 galaxies.

Original languageEnglish (US)
Pages (from-to)L151-L154
JournalAstrophysical Journal Letters
Issue number2
StatePublished - Feb 1 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Galaxies: Seyfert
  • Galaxies: active
  • Galaxies: kinematics and dynamics
  • Galaxies: nuclei


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