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Dwarf spheroidal galaxies in the M81 group of galaxies

✍ Scribed by S. Lianou; E.K. Grebel; A. Koch

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
753 KB
Volume
330
Category
Article
ISSN
0004-6337

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✦ Synopsis

Abstract

We study the properties of the dwarf galaxy population in the nearby interacting M81 group of galaxies. In particular, we are deriving the metallicity distribution functions, the ages and the star formation histories of these dwarf galaxies based on data from the Hubble Space Telescope's Advanced Camera for Surveys and the Sloan Digital Sky Survey. We are correlating this information with the dwarf galaxies' position in the group in order to derive the impact of interactions and environment on their evolution. Here we present preliminary results on the metallicity distribution functions of dwarf spheroidals in the M81 group (Β© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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## Abstract The study of (dwarf) galaxies in nearby groups is one among the most powerful tools that can be used to investigate galaxy evolution, chemical enrichment and environmental effects on these objects. The Centaurus A group (at a distance of ∼4 Mpc) is dynamically evolved and contains about