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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20140710T103000
DTEND;TZID=Atlantic/Canary:20140710T113000
UID:iactalks-651
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/651
CREATED:2014-07-10T10:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Massive star evolution along the cosmic history: from first stars t
 o the birth of the Solar System
DESCRIPTION:Massive star evolution along the cosmic history: from first sta
 rs to the birth of the Solar System\nDr. Geroges Meynet\n\nIn the early Un
 iverse, massive stars played a key role in the  early chemical evolution o
 f galaxies and in injecting important amount of ionising radiation in thei
 r  environments. The first question that will be addressed in this seminar
  is the following one: can we infer some properties of the first stellar  
 generations in the Universe by studying the surface composition of very me
 tal poor stars in the halo  of our Galaxy? The talk will focus on both the
  regular halo stars and the so-called Carbon Enhanced Metal Poor  (CEMP) s
 tars. The second topic that will be addressed in this talk deals with a mu
 ch  more recent event, the birth of the  Solar System. Here the question w
 ill be: what do the presence of short  lived radioactive elements in the p
 roto-solar nebula tell us about the stellar environment of the Sun   4.56 
 billion years ago? The talk will focus on the discussion of the origin of 
 26Al and 60Fe in  the proto-solar nebula.
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