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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3068
DTSTART:20130919T203000Z
DTEND:20130919T220000Z
DTSTAMP:20260419T211908Z
LAST-MODIFIED:20130909T144030Z
LOCATION:4421 Sterling Hall
SUMMARY:The Atomic to Molecular Gas Transition in Galaxies\, Astronomy
  Colloquium\, Tony Wong\, Univesity of IL- Urbana -Champaign
DESCRIPTION:Molecular gas is the direct fuel for star formation\, yet 
 in most galaxies the neutral ISM is predominantly atomic.  The HI-H_2 
 balance is governed directly by photodissociation balance\, which in t
 urn is sensitive to the environmental conditions which determine gas d
 ensity\, pressure\, and metal abundance.  I review several recent mode
 ls for how the HI-H_2 balance is set and present recent CARMA results 
 that can be used to test them.  I will finish by outlining a few proje
 cts underway for the LMC\, which I will argue is the best laboratory t
 o develop and test various approaches to measuring the gas content of 
 galaxies and hopefully reduce the many systematic uncertainties that w
 e still suffer from.<br><br>
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URL:https://www.physics.wisc.edu/events/?id=3068
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