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Title

Populating the galaxy velocity dispersion: supermassive black hole mass diagram, a Catalogue of (M-bh, sigma) values

Author(s)

Graham, Alister W.

Abstract

An updated catalogue of 76 galaxies, with direct measurements of supermassive black-hole mass (Mbh) plus, when available, the central velocity dispersion (σ0) of their host bulge is provided. Fifty of these mass measurements are considered reliable, while the others remain somewhat uncertain at this time. An additional nine stellar systems, including one stellar cluster and three globular clusters, are listed as hosting potential intermediate mass black holes <106 M⊙. With this larger data set, the demographics within the Mbh-0 diagram are briefly explored. Many barred galaxies are shown to be offset from the Mbh-0 relation defined by the non-barred galaxies, in the sense that their velocity dispersions are too high. Furthermore, including 88 AGN with black-hole mass estimates from reverberation mapping studies, we speculate that barred AGN may follow this same general trend. We also show that some AGN with σ0 < 100 km s-1 tend to reside up to (∼0.6 dex) ∼1.0 dex above the (barless) Mbhσ 0 relation. Finally, it is shown that 'core galaxies' appear not to define an additional subdivision of the Mbhσ0 diagram, although improved methods for measuring σ0 values may be valuable.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Information and Communication Technologies. Centre for Astrophysics and Supercomputing

Source

Publications of the Astronomical Society of Australia, Vol. 25, no. 4 (2008), pp. 167-175

Publication year

2008

Keyword(s)

Accretion disk;  Active galactic nuclei;  Axisymmetrical;  Black hole physics;  Bulges;  Catalogues;  Dwarf elliptic galaxies;  Dynamical models;  Dynamics;  Galaxies;  Globular cluster G1;  History;  Hubble-space telescope;  Kinematics;  Log-quadratic relation;  Nuclei;  Parameters;  Parsec-scale jet;  Ratio;  Star formation;  To-light

Publisher

CSIRO Publishing

ISSN

1323-3580

Publisher URL

http://dx.doi.org/10.1071/AS08013

Copyright

Copyright © Astronomical Society of Australia 2008. Author's version of the paper reproduced here in accordance with the copyright policy of the publisher.

Full text

Peer reviewed