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Observational evidence for a connection between SMBHs and dark matter haloes

Published online by Cambridge University Press:  24 November 2004

Maarten Baes ,
Herwig Dejonghe ,
Pieter Buyle ,
Laura Ferrarese  and
Gianfranco Gentile
Maarten Baes
Affiliation:
Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium email: maarten.baes@ugent.be Department of Physics and Astronomy, Cardiff University, 5 The Parade, Cardiff CF24 3YB, Wales, UK
Herwig Dejonghe
Affiliation:
Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium email: maarten.baes@ugent.be
Pieter Buyle
Affiliation:
Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium email: maarten.baes@ugent.be
Laura Ferrarese
Affiliation:
Rutgers University, New Brunswick, NJ 08854, USA
Gianfranco Gentile
Affiliation:
Radioastronomisches Institut der Universität Bonn, Auf dem Hügel 71D, D-53121 Bonn, Germany SISSA, via Beirut 4, 34014 Trieste, Italy
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Abstract

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We investigate the relation between circular velocity vc and bulge velocity dispersion σ in spiral galaxies, based on literature data and new spectroscopic observations. We find a strong, nearly linear vc−σ correlation with a negligible intrinsic scatter, and a striking agreement with the corresponding relation for elliptical galaxies. The least massive galaxies (σ<80 km s−1) significantly deviate from this relation. We combine this vc−σ correlation with the well-known MBHσ relation to obtain a tight correlation between circular velocity and supermassive black hole mass, and interpret this as observational evidence for a close link between supermassive black holes and the dark matter haloes in which they presumably formed. Apart from being an important ingredient for theoretical models of galaxy formation and evolution, the relation between MBH and circular velocity has the potential to become an important practical tool in estimating supermassive black hole masses in spiral galaxies.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
ORAL CONTRIBUTIONS
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS222 , March 2004 , pp. 25 - 28
Copyright
© 2004 International Astronomical Union