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A Link in SFR and Morphology of Bulges

Published online by Cambridge University Press:  01 August 2006

David B. Fisher*
Affiliation:
Department of Astronomy, University of Texas at Austin, Austin, TX 78712, USA email: dbfisher@astro.as.utexas.edu
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Abstract

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We use Spitzer 3.6-8.0 μm color profiles to compare the radial structure of star formation of galaxies with pseudobulges and classical bulges. Galaxies structurally identified as having pseudobulges have higher central star formation rates than those of classical bulges. Further, galaxies identified as having classical bulges have remarkably regular star formation profiles. These observations support the picture of pseudobulge formation via secular evolution and classical bulges forming in mergers.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2007

References

Kormendy, J., & Kennicutt, R.C. 2004, ARAA 42, 603.CrossRefGoogle Scholar
Fisher, D.B. 2006, Ap. Lett. 642, L17.CrossRefGoogle Scholar