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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-2969
DTSTART:20130307T213000Z
DTEND:20130307T230000Z
DTSTAMP:20260420T020620Z
LAST-MODIFIED:20130207T190944Z
LOCATION:4421 Sterling Hall
SUMMARY:Stellar Mergers and Interactions: Yes\, Virginia\, Stars Do Co
 llide. \, Astronomy Colloquium\, Alison Sills\, McMaster University
DESCRIPTION:<br>
\nI will discuss strong interactions between stars in
  a variety of<br>
\nenvironments. Despite the vast (average) interstel
 lar distances\, stars are social creatures and tend to live in pairs\,
  multiples\, or groups. Under these circumstances\, stars can\, and do
 \, modify each other's mass\, radius\, composition\, and overall evolu
 tion through gravitational encounters ranging from wind mass transfer 
 in a binary system to complete stellar collisions and mergers. I will 
 show how such events can change our understanding of particular stella
 r systems\, how they can explain the properties of many unusual object
 s\, and how interactions could change the environment these stars live
  in. The emphasis for this<br>
\ntalk will be on the modelling of thes
 e interactions\, and I will<br>
\ndemonstrate how a combination of ste
 llar evolution\, stellar dynamics\, and hydrodynamics can bring some u
 nderstanding to these complicated systems. 
URL:https://www.physics.wisc.edu/events/?id=2969
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