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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20221013T103000
DTEND;TZID=Atlantic/Canary:20221013T113000
UID:iactalks-1621
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1621
CREATED:2022-10-13T10:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Supergiants with an Interesting Past
DESCRIPTION:Supergiants with an Interesting Past\nDr. Alexey Bobrick\n\nExc
 iting things may have happened sometimes to the stars we see in the sky to
 day. For example, Betelgeuse, also known as Alpha-Ori, an M-type red super
 giant, the 10th brightest sky in the sky (usually), may well have been a b
 inary star in the past. Its rapid rotation, peculiarly large Galactic velo
 city, and unusual chemical abundances all point to it being kicked out fro
 m the birth environment and merging as a binary star. By comparing a Monte
 -Carlo stellar cluster population model with the observed populations of G
 alactic O- and B- type stars (progenitors of red supergiants), I will show
  that the story of Betelgeuse is not at all uncommon. In distant galaxies,
  closely related scenarios may give rise to peculiar core-collapse superno
 vae. I will conclude by briefly discussing how the diversity of such binar
 y and triple stellar evolution histories reflects in the variety of the cu
 rrently discovered core-collapse supernovae.
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