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Supermassive Black Holes in Active Galactic Nuclei. II. Calibration of the M-sigma Relationship for AGNs

Christopher A. Onken·Laura Ferrarese·David Merritt·Bradley M. Peterson·Richard W. Pogge·Marianne Vestergaard·Amri Wandel·.
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Abstract

We calibrate reverberation-based black hole masses in active galactic nuclei (AGNs) by using the correlation between black hole mass, M, and bulge/spheroid stellar velocity dispersion, sigma. We use new measurements of sigma for 6 AGNs and published velocity dispersions for 10 others, in conjunction with improved reverberation mapping results, to determine the scaling factor required to bring reverberation-based black hole masses into agreement with the quiescent galaxy M-sigma relationship. The scatter in the AGN black hole masses is found to be less than a factor of 3. The current observational uncertainties preclude use of the scaling factor to discriminate between broad-line region models.

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Christopher A. Onken, Laura Ferrarese, David Merritt, Bradley M. Peterson, Richard W. Pogge, Marianne Vestergaard, Amri Wandel, .. 2004-07-14. Supermassive Black Holes in Active Galactic Nuclei. II. Calibration of the M-sigma Relationship for AGNs. https://doi.org/10.1086/424655

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