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Symposium summary: dynamics

Published online by Cambridge University Press:  01 July 2007

James Binney
James Binney*
Affiliation:
Rudolf Peierls Centre for Theoretical Physics, Oxford University, Keble Road, Oxford OX1 3NP, UK email: [email protected]
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Abstract

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Pseudobulges form from unstable disks, while classical bulges form in violent episodes of star formation when a merger sweeps cold gas to a galactic centre. It seems unlikely that smashed disks contribute much to classical bulges. During mergers central black holes make cusps shallower and inflate kinematically decoupled cores. The abundance of galaxies with no detected classical bulge can perhaps be understood if galaxies exchange gas with the IGM more freely than is often supposed.

Keywords

galaxies: kinematics and dynamicsgalaxies: formationintergalactic mediumcosmology: theory
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 455 - 458
Copyright
Copyright © International Astronomical Union 2008

References

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Ostriker, J. P., 1980, Com. Ap., 8, 1770Google Scholar