Testing Formation Models and Heating and Feedback Mechanisms In Galaxy Groups

Details Testing Formation Models and Heating and Feedback Mechanisms In Galaxy Groups Testing Formation Models and Heating and Feedback Mechanisms In Galaxy Groups

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cxo..prop.1564f&link_type=abstract

Chandra Proposal ID #05800598

Physics

Chandra Proposal Id #05800598

Scientific paper

We propose X-ray observations of two X-ray bright ``fossil groups'' centered on the dominant galaxies IC1633 and NGC6269 whose optical light dominates that of the group. The X-ray gas has the extent and luminosity typical of a poor cluster. We will determine baryon fractions, mass-to-light ratios, and gas mass and abundance distributions. These systems are particularly appropriate for testing models of thermal conduction which may explain the absence of cool gas in "cooling flows". We will analyze ``edges'' to investigate mergers or gas motions in these supposedly relaxed systems. Finally, since both galaxies host lobed radio sources, we will study the effects of the radio plasma on the hot gas and test feedback models for AGN energy input into cooling flows.

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