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The Last Stages of Star Formation in dEs?

Published online by Cambridge University Press:  01 August 2006

T. Lisker ,
K. Glatt ,
P. Westera  and
E. K. Grebel
T. Lisker
Affiliation:
Astronomical Institute, Dept. of Physics and Astronomy, University of Basel, Switzerland
K. Glatt
Affiliation:
Astronomical Institute, Dept. of Physics and Astronomy, University of Basel, Switzerland
P. Westera
Affiliation:
Astronomical Institute, Dept. of Physics and Astronomy, University of Basel, Switzerland
E. K. Grebel
Affiliation:
Astronomical Institute, Dept. of Physics and Astronomy, University of Basel, Switzerland
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Abstract

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A significant fraction of Virgo cluster early-type dwarf galaxies have blue central colours caused by recent or ongoing star formation. A spectral analysis shows that even in their centers, stellar mass is dominated by an old population. These galaxies are an unrelaxed cluster population that possibly formed from morphological transformation of late-type galaxies.

Keywords

Galaxies: dwarfgalaxies: evolutiongalaxies: clusters: individual (Virgo)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S235: Galaxy Evolution Across the Hubble Time , August 2006 , pp. 317
Copyright
Copyright © International Astronomical Union 2007

References

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Lisker, T., Glatt, K., Westera, P., & Grebel, E.K. 2006, AJ, in press (arXiv:astro-ph/0608294).Google Scholar