XMM-Newton Proposal 03012901

Details XMM-Newton Proposal 03012901 XMM-Newton Proposal 03012901

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004xmm..prop...44m&link_type=abstract

XMM-Newton Proposal ID #03012901

Physics

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, Ngc 5044, Xmm-Newton Proposal 03012901

Scientific paper

This is a request for a second off-center observation of the galaxy group NGC 5044. Our previous offset observation, centered 217 kpc to the south of the group center, revealed that the hot gas in this region has received much less iron than expected from dwarf galaxy outflows. We now request to observe NGC 5044 offset to the west where the density of dwarf galaxies is greater. If the iron abundance is greater in the western offset, this will alleviate or remove the iron shortfall implied by the southern offset and will indicate that baryons entered the group anisotropically along cosmic filaments. If not, this will strengthen our conclusion that a considerable fraction of the iron produced by supernovae is not visible either in the hot gas or in galactic stars.

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