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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20110726T000000
DTEND;TZID=Atlantic/Canary:20110726T010000
UID:iactalks-296
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/296
CREATED:2011-07-26T00:00:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:The Kepler space mission sheds a new light on variable A- and F-typ
 e stars
DESCRIPTION:The Kepler space mission sheds a new light on variable A- and F
 -type stars\nDr. Katrien Uytterhoeven\n\nThe Kepler spacecraft is providin
 g photometric time series with micromagnitude precision for thousands of v
 ariable stars. The continuous time-series of unprecedented timespan open u
 p the opportunity to study the pulsational variability in much more detail
  than was previously possible from the ground. We present a first general 
 characterization of the variability of A-F type stars as observed in the K
 epler light curves of a sample of 750 candidate variable A-F type stars, a
 nd investigate the relation between gamma Doradus, delta Scuti, and hybrid
  stars. Our results suggest a revision of the current observational instab
 ility strips, and imply an investigation of pulsation mechanisms to drive 
 hybrid pulsations.
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