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Black Hole Mass Estimates from Reverberation Mapping and from Spatially Resolved Kinematics

Karl Gebhardt·John Kormendy·Luis Ho·Ralf Bender·Gary Bower·Alan Dressler·S. M. Faber·Alexei Filippenko·Richard Green·Carl Grillmair·Tod Lauer·John Magorrian·Jason Pinkney·Douglas Richstone·Scott Tremaine
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Abstract

Black hole (BH) masses that have been measured by reverberation mapping in active galaxies fall significantly below the correlation between bulge luminosity and BH mass determined from spatially resolved kinematics of nearby normal galaxies. This discrepancy has created concern that one or both techniques suffer from systematic errors. We show that BH masses from reverberation mapping are consistent with the recently discovered relationship between BH mass and galaxy velocity dispersion. Therefore the bulge luminosities are the probable source of the disagreement, not problems with either method of mass measurement. This result underscores the utility of the BH mass -- velocity dispersion relationship. Reverberation mapping can now be applied with increased confidence to galaxies whose active nuclei are too bright or whose distances are too large for BH searches based on spatially resolved kinematics.

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Karl Gebhardt, John Kormendy, Luis Ho, Ralf Bender, Gary Bower, Alan Dressler, S. M. Faber, Alexei Filippenko, Richard Green, Carl Grillmair, Tod Lauer, John Magorrian, Jason Pinkney, Douglas Richstone, Scott Tremaine. 2000-09-05. Black Hole Mass Estimates from Reverberation Mapping and from Spatially Resolved Kinematics. https://doi.org/10.1086/318174

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