Computer Science
Scientific paper
Mar 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop...50s&link_type=abstract
XMM-Newton Proposal ID #02009703
Computer Science
Ngc 1553, Ngc 2986, Ngc 2325, Xmm-Newton Proposal 02009703
Scientific paper
Galaxies are the basic unit from which larger structures are built, and provide an important comparison with more massive, later-forming virialized systems. Their halos also provide an ideal environment in which to study non-gravitational processes on small mass scales. However, previous work on individual galaxies has focused on brightest-group or cluster galaxies, which are embedded in dense gas associated with a larger potential well. We have carefully selected a small sample of early-type galaxies, free from such contaminating emission. We propose to perform a detailed study of the best nearby example of such a system, combined with observations of two similar but fainter galaxies, in order to establish their properties as a class, which can be compared with group and cluster halos.
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