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VERSION:2.0
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METHOD:PUBLISH
BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20180116T123000
DTEND;TZID=Atlantic/Canary:20180116T133000
UID:iactalks-1100
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1100
CREATED:2018-01-16T12:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Testing stellar evolutionary models from detached eclipsing binary 
 stars
DESCRIPTION:Testing stellar evolutionary models from detached eclipsing bin
 ary stars\nDr. Carlos del Burgo\n\nWe employ a Bayesian method to infer st
 ellar parameters from the PARSEC  v1.2S library of stellar evolution 
 models and test the accuracy of these theoretical predictions. Detached ec
 lipsing binaries are ideal for testing. We employ a compilation of 165 det
 ached eclipsing binary systems of our galaxy and the Magellanic clouds wit
 h reliable metallicities and measurements for the mass and radius to 2 per
  cent precision for most of them. We complement the analysis with 107 star
 s that are closer than 300 pc, for which we adopted solar metallicity. The
  applied Bayesian analysis relies on a prior for the initial mass function
  and flat priors for age and metallicity, and it takes on input the effect
 ive temperature, radius, and metallicity, and their uncertainties, returni
 ng theoretical predictions for other stellar parameters of the binaries. O
 ur research is mainly based on the comparison of dynamical masses with the
  theoretical predictions for the selected binary systems. We determine the
  precision of the models. Also, we derive distances for the binaries, whic
 h are compared with trigonometric parallaxes whenever possible. We discuss
  the effects of evolution and the challenges associated with the determina
 tion of theoretical stellar ages.
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