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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20151006T123000
DTEND;TZID=Atlantic/Canary:20151006T133000
UID:iactalks-813
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/813
CREATED:2015-10-06T12:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Stars at the Eddington limit
DESCRIPTION:Stars at the Eddington limit\nProf. Norbert Langer\n\nIt is oft
 en assumed that when stars reach their Eddington limit, strong outflows ar
 e initiated, and that this happens only for extreme stellar masses. I will
  show that in realistic models of stars up to 500 Msun, the Eddington limi
 t is not reached at the stellar surface. Instead, I will argue that the Ed
 dington limit is exceeded inside the stellar envelope, in hydrogen-rich st
 ars above about 1 ... 30 Msun, and in Wolf-Rayet stars above 7 Msun, with 
 drastic effects for their structure and stability. I will discuss the obse
 rvational evidence for this, and outline evolutionary consequences.
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