The Stellar Populations of dSph Galaxies in Nearby Groups

Details The Stellar Populations of dSph Galaxies in Nearby Groups The Stellar Populations of dSph Galaxies in Nearby Groups

2005-07-07

arxiv.org/abs/astro-ph/0507168v1

Astronomy and Astrophysics

Astrophysics

7 pages, 1 figure. To appear in the Proceedings of IAU Colloquium 198 "Near Field Cosmology with dwarf Elliptical Galaxies", e

Scientific paper

10.1017/S1743921305003443

In this contribution initial results are presented from a program to study in detail the stellar populations of dwarf Spheroidal (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.

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