XMM-Newton Proposal 02052203

Physics

Scientific paper

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Ngc 6810, Ngc 4418, Xmm-Newton Proposal 02052203

Scientific paper

Indirect evidence strongly suggests that starburst-driven outflows (superwinds) from L ~ L* galaxies are responsible for much of the enrichment and heating of the IGM. Catching metal-ejection in action requires use of X-ray telescopes to study the hot metal-enriched plasma in superwind outflows. We propose EPIC observations of 3 nearby, relatively bright, edge-on starburst galaxies with the aim of constraining the spectral properties of the hot gas in their halos, in particular the abundance ratios O/Fe and Mg/O. It is necessary to perform this experiment before we can unambiguously blame superwinds for the enrichment of the IGM.

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