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OI Colloquium
Nick Gnedin
 University of Chicago, Department of Astronomy and Astrophysics
Title What we do not yet know about star formation in galaxies?
Date26 / 09 / 2011
Time 2:30 pm (Coffee served at 2:15pm)
PlaceMDCL-1110
Link
Abstract It is generally believed that stars only form in molecular hydrogen clouds. But is it really so? I will discuss the key physical processes that control the atomic-to-molecular gas transition in the interstellar medium, and the effect that transition has on star formation in galaxies. The interplay between radiation field and gas
dynamics leads to novel, previously undiscovered feedback processes in galaxy evolution, that are potentially more important than the supernova feedback. I will discuss advanced cosmological numerical simulations that incorporate all these effects self-consistently. Based on such simulations, I will illustrate that the nature stubbornly ignores our feeble attempts to understand how stars in normal galaxies actually form.

HOST: Dr. James Wadsley

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Origins Institute at McMaster University, 2004-2009
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