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The Australia Telescope National Facility Colloquium
15:30-16:30 Wed 11 Aug 2010

ATNF Marsfield Lecture Theatre

Alex Hill

(University of Wisconsin)

Warm ionized gas in the Galaxy - Alex Hill Colloquium

The warm ionized medium (WIM) is a major component of the interstellar medium of galaxies, with much of the H^+ mass in the Milky Way located hundreds of parsecs from the OB stars that ionize it. In this talk, I will preview early results from the Wisconsin H-Alpha Mapper (WHAM) Southern Sky Survey, which will soon complete the first all-sky, kinematically-resolved survey of H-alpha emission. The combination of WHAM data with numerical simulations of turbulence and a photoionization radiative transfer code are providing new insights into the physical conditions and ionization mechanisms of warm ionized gas in both the disk and halo of the Galaxy.

More information


Bjorn Emonts

Other Colloquia
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