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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20191212T103000
DTEND;TZID=Atlantic/Canary:20191212T113000
UID:iactalks-1316
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1316
CREATED:2019-12-12T10:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Asteroseismology in the Gaia Era: A New View of the Milky Way
DESCRIPTION:Asteroseismology in the Gaia Era: A New View of the Milky Way\n
 Dr. Marc Pinsonneault\n\nTime-domain space missions have revolutionized ou
 r understanding of stellar physics and stellar populations. Virtually all 
 evolved stars can be detected as oscillators in missions such as Kepler, K
 2, TESS and PLATO.  Asteroseismology, or the study of stellar oscilla
 tions, can be combined with spectroscopy to infer masses, radii and ages f
 or very large samples of stars.  This asteroseismic data can also be 
 used to train machine learning tools to infer ages for even larger stellar
  population studies, sampling a large fraction of the volume of the Milky 
 Way galaxy. In this talk I demonstrate that asteroseismic radii are in exc
 ellent agreement with those inferred using Gaia and spectroscopic data; th
 is demonstrates that the current asteroseismic data is precise and accurat
 e at the 1-2% level.  Major new catalogs for Kepler and K2 data are n
 earing completion, and I present initial results from both. We find unexpe
 cted age patterns in stars though to be chemically old, illustrating the p
 ower of age information for Galactic archeology.  Prospects for futur
 e progress in the TESS era will also be discussed.
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