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New Catalog and Ultraviolet Properties of Dwarf Galaxies in the VirgoCluster

Published online by Cambridge University Press:  11 July 2011

M. Koleva ,
Ph. Prugniel ,
I. Vauglin ,
S. Kim ,
S.-C. Rey ,
E.-C. Sung ,
W. Yi  and
T. Lisker
S. Kim
Affiliation:
Department of Astronomy and Space Science, Chungnam National University, Daejeon, Korea
S.-C. Rey*
Affiliation:
Department of Astronomy and Space Science, Chungnam National University, Daejeon, Korea
E.-C. Sung
Affiliation:
Korea Astronomy & Space Science Institute, Daejeon, Korea
W. Yi
Affiliation:
Department of Astronomy and Space Science, Chungnam National University, Daejeon, Korea
T. Lisker
Affiliation:
Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg (ZAH), Mönchhofstraße 12-14, 69120 Heidelberg, Germany
*
e-mail: [email protected]
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Abstract

We present a new catalog of dwarf galaxies in the Virgo cluster using SDSS DR7 data. Basically, morphologies of galaxies are classified based on the image and spectral feature of SDSS data. We secure 994 dwarf galaxies as members of the Virgo cluster, from which 492 galaxies are new objects not included in the previous catalog. By matching with GALEX GR5 data, we present ultraviolet properties of various dwarf galaxies in the Virgo cluster. We suggest that there are different star formation histories among different subclasses of early-type dwarf galaxies in the Virgo cluster related with their morphology and environment.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 48: CRAL-2010 A Universe of Dwarf Galaxies , 2011 , pp. 71 - 72
Copyright
© EAS, EDP Sciences, 2011

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References

Binggeli, B., Sandage, A., & Tammann, G.A., 1985, AJ, 90, 1681CrossRef
Kim, S., Rey, S.-C., Lisker, T., & Sohn, S.-T., 2010, ApJ, 721, L72CrossRef