Early-Type Galaxies in Groups: Stripping and Stifling

Details Early-Type Galaxies in Groups: Stripping and Stifling Early-Type Galaxies in Groups: Stripping and Stifling

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..992p&link_type=abstract

Chandra Proposal ID #03800470

Computer Science

Chandra Proposal Id #03800470

Scientific paper

Isolated early-type galaxies are rare, and it appears that most non-dwarf ellipticals form within groups, though some of these are later incorporated into clusters. An understanding of the formation and evolution of early-type galaxies requires a study of the way in which they are affected by the group environment. Gas and dark matter can be stripped from galaxies, or conversely surrounding intergalactic gas can stifle galaxy winds, leading to enhanced gas retention. Our most recent ROSAT studies show that much previous work on the X-ray properties of early-type galaxies has been confused by inclusion of cooling flows focussed on the brightest group galaxies, which are anomalously bright. We propose to study the X-ray components of a sample of normal early-type galaxies in groups.

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