A Relationship between Nuclear Black Hole Mass and Galaxy Velocity Dispersion

  title={A Relationship between Nuclear Black Hole Mass and Galaxy Velocity Dispersion},
  author={Karl Gebhardt and Ralf Bender and Gary Allen Bower and Alan Dressler and S. M. Faber and Alexei V. Filippenko and Richard Green and Carl J. Grillmair and Luis C. Ho and John Kormendy and Tod R. Lauer and John Magorrian and Jason Pinkney and Douglas O. Richstone and Scott Tremaine},
  journal={The Astrophysical Journal},
We describe a correlation between the mass Mbh of a galaxy's central black hole and the luminosity-weighted line-of-sight velocity dispersion σe within the half-light radius. The result is based on a sample of 26 galaxies, including 13 galaxies with new determinations of black hole masses from Hubble Space Telescope measurements of stellar kinematics. The best-fit correlation is Mbh = 1.2(±0.2) × 108 M☉(σe/200 km s-1)3.75 (±0.3) over almost 3 orders of magnitude in Mbh; the scatter in Mbh at… 

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