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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20120301T000000
DTEND;TZID=Atlantic/Canary:20120301T010000
UID:iactalks-376
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/376
CREATED:2012-03-01T00:00:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:The Evolution of Massive Stars towards their Death: Rotation, Binar
 ity and Mergers.
DESCRIPTION:The Evolution of Massive Stars towards their Death: Rotation, B
 inarity and Mergers.\nDr. Selma de Mink\n\nAlthough they are rare and shor
 t-lived, massive stars play a major  role in Universe. With their large lu
 minosities, strong stellar winds  and spectacular explosions they act as c
 osmic engines, heating and  enriching their surroundings, where the next g
 eneration of stars are  forming. \nThe latest stellar evolutionary mo
 dels show that  rotation can have drastic effects, which has been suggeste
 d as a  evolutionary path for the progenitors of long gamma-ray bursts. I 
 will  discuss the recent efforts of theorists and observers to understand 
 the  effects of rotation including some highlights of the ongoing "VLT-FLA
 MES  Tarantula Survey of Massive Stars". A further challenge arises from t
 he  preference of massive stars to come in close pairs. Interaction with a
   companion leads to spectacular phenomena such as runaways, X-ray  binari
 es and stellar mergers. I will present new results on the true  close bina
 ry fraction for massive stars, which imply that only a  minority evolve un
 disturbed towards their death.
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