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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-5234
DTSTART:20191031T203000Z
DTEND:20191031T220000Z
DTSTAMP:20260415T061939Z
LAST-MODIFIED:20191028T131058Z
LOCATION:4421 Sterling Hall\, Coffee and cookies 3:30 PM\, Talk begins
  3:45 PM
SUMMARY:"Suppressed Superwinds:  A New Paradigm for Extreme Massive-St
 ar Feedback”\, Astronomy Colloquium\, Sally Oey\, University of Mich
 igan
DESCRIPTION:Feedback from young\, super star clusters (SSCs) is a majo
 r driver for galaxy evolution at all cosmic epochs\, but may be especi
 ally relevant for cosmic reionization.  The standard scenario for mass
 ive-star feedback has been that superwinds from SSCs clear pathways fo
 r Lyman continuum (LyC) and Ly-alpha radiation to escape from host gal
 axies.  However\, theoretical predictions indicate that for the most m
 assive and compact SSCs\, superwinds are actually suppressed by catast
 rophic cooling and pressure confinement.  These extreme conditions are
  rare\, but observational evidence from local starbursts increasingly 
 supports this scenario.  I will present our work in establishing this 
 new paradigm and its consequences for LyC and Ly-alpha escape.<br>
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URL:https://www.physics.wisc.edu/events/?id=5234
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