Do Groups of Galaxies at Intermediate Redshift Contain Hot Gas?

Details Do Groups of Galaxies at Intermediate Redshift Contain Hot Gas? Do Groups of Galaxies at Intermediate Redshift Contain Hot Gas?

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.0902s&link_type=abstract

American Astronomical Society Meeting 204, #09.02; Bulletin of the American Astronomical Society, Vol. 36, p.792

Astronomy and Astrophysics

Astronomy

Scientific paper

Rich clusters of galaxies can be clearly identified in X-ray images from the \textsl{Chandra} and \textsl{XMM-Newton} X-ray observatories, consistent with their containing a large fraction of their baryonic mass as hot, highly ionized, diffuse gas. Some small groups of galaxies in the local universe have also been seen to contain a hot-gas component. Preliminary results from a 50 ksec \textsl{XMM} observation of a field with 40 optically-identified galaxy-groups between redshift 0.1 and 0.6, however, indicate almost no spatial or spectral correlation between groups and X-ray emission. Several of the groups suggest interesting results and merit further study.

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