Dwarf Elliptical Galaxies in the Perseus Cluster

Details Dwarf Elliptical Galaxies in the Perseus Cluster Dwarf Elliptical Galaxies in the Perseus Cluster

1999-10-21

arxiv.org/abs/astro-ph/9910380v1

Astronomy and Astrophysics

Astrophysics

2 pages, Will appear in proceedings of "Galaxy Dynamics: from the Early Universe to the Present", eds. F. Combes, G.A. Mamon,

Scientific paper

Dwarf ellipticals have the lowest stellar densities of any galaxies, but paradoxically are most common in the densest regions of the universe, and are especially frequent in rich clusters of galaxies. Simple estimates suggest that low luminosity dwarf ellipticals should be subject to substantial tidal heating in rich clusters if most of their mass is in the form of normal stars. We have therefore undertaken a program to image dwarfs in clusters with the 3.5-m high performance WIYN, ARC and smaller, wide field telescopes. Our objectives include testing for evidence of tidal disruption in the form of asymmetries and searching for evidence of recent star formation which might be associated with the production of elliptical dwarfs from in-falling field galaxies.

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