
%0 Journal Article
%A Da Costa, G. S. 
%T The Stellar Populations of dE Galaxies in Nearby Groups
%J Publications of the Astronomical Society of Australia
%D 2004/12/03
%V 21
%N 4
%P 366-370
%K galaxies: dwarf &#8212; galaxies: evolution &#8212; galaxies: stellar content &#8212; stars: Population II
%R https://doi.org/10.1071/AS04044
%U https://www.publish.csiro.au/paper/AS04044 
%X In this contribution Gemini-North NIRI J,K-observations are used to investigate the upper-Asymptotic Giant Branch (AGB) intermediate-age population in the M81 Group dwarf elliptical (dE) F8D1. Hubble Space Telescope (HST) &#8216;snapshot&#8217; V,I-observations are also analysed to investigate the upper-AGB populations in two other M81 Group dEs, DDO 71 and kk077. In all three dEs, significant intermediate-age populations are found. Further, there are sizeable dE-to-dE differences in these populations: F8D1 contains relatively more, and relatively more luminous, upper-AGB stars. These results are compared with existing information for Local Group and Sculptor group dwarfs. It is suggested that &#8216;environmental harrassment&#8217; plays an important role in governing dwarf galaxy evolution. 
