Chandra/HST Coverage of Compact Galaxy Group Evolution

Details Chandra/HST Coverage of Compact Galaxy Group Evolution Chandra/HST Coverage of Compact Galaxy Group Evolution

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007cxo..prop.2451g&link_type=abstract

Chandra Proposal ID #09800576

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Chandra Proposal Id #09800576

Scientific paper

The first galaxies and their environments differed substantially from those locally, with multiple interactions influencing their histories. Compared to all other nearby environments, present-day compact galaxy groups most closely reproduce conditions in the earlier universe (z~4) when galaxies assembled through hierarchical formation, and galaxy groups combined to form proto-clusters (in dense regions) or massive ellipticals (in the field). We propose senstitive Chandra observations of two nearby compact galaxy groups, HCGs 31 and 59, to complete a sample of six with joint Chandra/HST coverage. In addition to Spitzer mid-IR and Swift UV imaging already in hand, these data will enable a penetrating multiwavelength investigation into this important environment.

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