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Symposium summary: dynamics

Published online by Cambridge University Press:  01 July 2007

James Binney*
Affiliation:
Rudolf Peierls Centre for Theoretical Physics, Oxford University, Keble Road, Oxford OX1 3NP, UK email: binney@thphys.ox.ac.uk
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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.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2008

References

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