X-ray Properties of a Mass-Selected Group Catalog

Details X-ray Properties of a Mass-Selected Group Catalog X-ray Properties of a Mass-Selected Group Catalog

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1783m&link_type=abstract

Chandra Proposal ID #06800267

Computer Science

Chandra Proposal Id #06800267

Scientific paper

The observed X-ray luminosities of groups are inconsistent with pure shock-heated gas model. It is thought that a combination of pre-heating, gas cooling and energy injection act to remove low entropy gas. However, the extent of these processes is uncertain because the previous selection of group catalogs have been based on X-ray emission. We have constructed a complete, mass-selected catalog of 18 groups from the 2dFGRS. X-ray observations of this sample would for the first time provide accurate determinations of the entropy in a mass-selected sample. This project was highly ranked by last year Chandra and XMM tacs. In return twelve groups have been accepted for observation. Here we propose the observation of the remaining 6 groups to complete the sample.

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