8th HEAD Meeting, 8-11 September, 2004
Session 1 Galaxy Clusters and the Intergalactic Medium
Oral, Wednesday, September 8, 2004, 9:00-10:30am

[Previous] | [Session 1] | [Next]

[1.04] Chandra and XMM View Galaxy Groups: New Details from Sharper Images

J. M. Vrtilek (CfA), T. J. Ponman (U. Birmingham), E. J. O'Sullivan, L. P. David, D. E. Harris, W. Forman, C. Jones (CfA), W. M. Lane, N. E. Kassim (NRL)

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 show results from an examination of several X-ray bright groups, mostly from the Hickson, AWM, and MKW lists, relevant to 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 was supported in part by NASA grants GO2-3186X and GO4-5154X.

[Previous] | [Session 1] | [Next]

Bulletin of the American Astronomical Society, 36 #3
© 2004. The American Astronomical Soceity.