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Black holes in low-mass bulges and pseudobulges

Published online by Cambridge University Press:  01 July 2007

N. Nowak ,
R. P. Saglia ,
J. Thomas ,
P. Erwin  and
R. Bender
N. Nowak
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, Germany email: nnowak@mpe.mpg.de
R. P. Saglia
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, Germany email: nnowak@mpe.mpg.de
J. Thomas
Affiliation:
Universitätssternwarte, Scheinerstrasse 1, 81679 Munich, Germany
P. Erwin
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, Germany email: nnowak@mpe.mpg.de Universitätssternwarte, Scheinerstrasse 1, 81679 Munich, Germany
R. Bender
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, Germany email: nnowak@mpe.mpg.de Universitätssternwarte, Scheinerstrasse 1, 81679 Munich, Germany
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Abstract

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Over the past decade we have learned that probably all ellipticals and bulges contain a central supermassive black hole (SMBH). The mass of the SMBH correlates both with the mass of the bulge component (about 0.15% of the bulge mass) and with the velocity dispersion σ of the bulge. We are investigating whether these relations remain valid or how they change when galaxies with pseudobulges, very low-mass bulges or bulgeless galaxies are considered. Studying SMBH relations for both classical bulges and pseudobulges can reveal the importance of different growing mechanisms (mergers vs. secular evolution) for the evolution of SMBHs. Low-mass classical bulges and bulgeless galaxies may harbour seed black holes in their earliest evolutionary stages, and studying them is of paramount importance for understanding the link between bulge evolution and black hole growth.

Keywords

galaxies: kinematics and dynamicsgalaxies: bulges
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 253 - 254
Copyright
Copyright © International Astronomical Union 2008

References

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