Characterising the metal-rich escaping galactic wind in I Zw 18

Details Characterising the metal-rich escaping galactic wind in I Zw 18 Characterising the metal-rich escaping galactic wind in I Zw 18

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop..175b&link_type=abstract

XMM-Newton Proposal ID #06552801

Physics

Galaxies, Galactic Surveys, I Zw 18

Scientific paper

I Zw 18 is the most metal-poor star forming galaxy known so far. Kpc-sized expanding shells and the newly detected extended X-ray emission indicate that I Zw 18 is experiencing a large scale outflow of gas into its halo. If it can be proven, that the metals created by the starburst are locked in the hot gas, and this gas escapes the gravitational potential of I Zw 18, a critical parametrisation used in all modern simulations of galaxy formation and evolution could be tested. We propose for additional integration time on I Zw 18 to verify the first hints for outflowing metal-rich gas from our analysis of XMM-NEWTON archival data.

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