Galaxy groups: new insights from Chandra and XMM

Details Galaxy groups: new insights from Chandra and XMM Galaxy groups: new insights from Chandra and XMM

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hia....13..327v&link_type=abstract

In: Highlights of Astronomy, Vol. 13, as presented at the XXVth General Assembly of the IAU - 2003 [Sydney, Australia, 13 - 26 J

Astronomy and Astrophysics

Astronomy

Galaxy Clusters

Scientific paper

Groups and poor clusters are the locus of most galaxies in the present-day Universe and the building blocks from which clusters form. They accordingly occupy a significant place in the continuum of structure between isolated galaxies and rich clusters. Owing to the lower temperature of their intracluster gas X-ray emission from groups produces strong lines from a broader range of elements than do hotter clusters. Here we employ Chandra and XMM images of several X-ray bright groups (including HCG 62 NGC 741 and MKW 4) to examine issues of current interest in the study of both groups and clusters: the distribution of heavy elements the presence and nature of X-ray cavities and their relation to radio observations the presence of cooling cores and X-ray signatures of recent galaxy interactions.
This work has been supported in part by NASA grants GO0-1037X GO1-2138X and GO2-3186X.

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