X-Ray Diagnostics of Virialized Galaxy Systems and the Nature of Compact Galaxy Groups

Details X-Ray Diagnostics of Virialized Galaxy Systems and the Nature of Compact Galaxy Groups X-Ray Diagnostics of Virialized Galaxy Systems and the Nature of Compact Galaxy Groups

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop..165m&link_type=abstract

Chandra Proposal ID #01800841

Computer Science

Chandra Proposal Id #01800841

Scientific paper

X-rays provide diagnostics on the diffuse ICM in virialized galaxy systems and on the nature of compact galaxy groups (CGs). ROSAT detections, luminosities and temperatures have been subject to debate. Do spiral-rich compact groups contain a diffuse and regular ICM, suggesting a virialized core? Are cool CGs under-luminous relative to the cluster L_X-T relation? Does a prototype virialized system at 1 keV show irregularities in its temperature and metallicity maps? We plan to observe four CGs with ACIS: one has never been observed in pointed observations, one has either cool diffuse emission or none, one appears very under-luminous relative to its temperature, and one is the prototype virialized group, with extended, luminous, hot and seemingly regular X-ray emission.

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