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

(2) Rutgers University; (3) Rochester Institute of Technology; (4) University of Arizona; (5) Hebrew University); Amri Wandel (5). ((1) The Ohio State University; Bradley M. Peterson (1); Christopher A. Onken (1); David Merritt (3); Laura Ferrarese (2); Marianne Vestergaard (4)

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

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arxiv astro-ph/0407297 v1 pith:IVGEIWYY submitted 2004-07-14 astro-ph

Christopher A. Onken (1) , Laura Ferrarese (2) , David Merritt (3) , Bradley M. Peterson (1) , Richard W. Pogge (1) , Marianne Vestergaard (4) , Amri Wandel (5). ((1) The Ohio State University , (2) Rutgers University

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(3) Rochester Institute of Technology (4) University of Arizona (5) Hebrew University)

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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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Galaxy morphology dependent (black hole mass)-(velocity dispersion) relations: implications for gravitational wave forecasts and cosmological simulations
astro-ph.GA 2026-06 unverdicted novelty 6.0 of 10

Morphology-dependent M_bh-σ0 relations are reported: shallow (2.5-3.1) for dust-poor S0 galaxies and steep (7.8) for massive ellipticals, using new SCOPE Bayesian regression on 137 galaxies.

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