Physics
Scientific paper
Mar 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop...38w&link_type=abstract
XMM-Newton Proposal ID #02007702
Physics
Am0644-741, Xmm-Newton Proposal 02007702
Scientific paper
Galactic outflows play an important role in regulating the rate of star formation as well as in the chemical evolution of galaxies. We plan to observe the X-ray emission from two starbursts in two collisional ring galaxies (the Cartwheel Galaxy and AM0644-741) that have similar star formation rates but different metallicities. Massive star formation is confined to an outer annular ring, not a starburst galaxy nucleus, allowing for accurate measurements of temperature and luminosity. We will determine how the outflow's temperatures and metallicities depend on the intrinsic metallicity of the host galaxy's ISM, as well as constrain the relative contributions of HMXB and hot gas to the total X-ray emission. XMM-Newton's high sensitivity is crucial to achieve these goals.
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