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The stellar populations of dSph galaxies in nearby groups

Published online by Cambridge University Press:  08 November 2005

G.S. Da Costa
G.S. Da Costa
Affiliation:
Research School of Astronomy & Astrophysics, The Australian National University email: [email protected]
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Abstract

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In this contribution initial results are presented from a program to study in detail the stellar populations of dwarf Spheriodal (dSph) galaxies in three nearby groups. The long-term aim of the program is to assess the influence of environment in governing the evolution of these low-luminosity systems. Specific results described here include the detection and measurement of intermediate-age upper-AGB populations in dSphs in the M81 and Cen A groups, and the discovery that four of the five low-luminosity early-type dwarfs in the low density Sculptor group contain modest amounts of neutral hydrogen gas.

Keywords

galaxies:dwarfgalaxies:stellar contentgalaxies: evolutionstars: AGB
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Colloquium C198: Near-Field Cosmology with Dwarf Elliptical Galaxies , March 2005 , pp. 35 - 41
Copyright
© 2005 International Astronomical Union