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BEGIN:VEVENT
DTSTAMP:20260627T211924Z
DTSTART;VALUE=DATE-TIME:20140730T144500
DTEND;VALUE=DATE-TIME:20140730T151500
SUMMARY:Pier-Emmanuel Tremblay: 3D Model Atmospheres of White Dwarfs
TZID:Europe/London
UID:20140730-094d43454748d3c8014782536f604409@warwick.ac.uk
CREATED:20140729T133331Z
DESCRIPTION:Speaker: Pier-Emmanuel Tremblay (Hubble Fellow\, Space Telesc
 ope Science Institute\, Baltimore) Most stars become white dwarfs at the
  end of the stellar life cycle. The study of these old degenerate remnan
 ts in clusters and the galactic halo provides essential information abou
 t the first stellar populations in our galaxy. We have recently computed
  the first grid of 3D model atmospheres for hydrogen-atmosphere white dw
 arfs. These time-resolved radiation-hydrodynamics simulations\, unlike t
 he commonly used 1D calculations\, do not rely on the mixing-length theo
 ry for the treatment of convection. The derived stellar masses using the
 se models are in much better agreement with our understanding of stellar
  evolution. In the future\, 3D model atmospheres will be computed for al
 l types of white dwarfs\, and these simulations will be connected to str
 ucture models. These theoretical tools will be essential for the study o
 f the upcoming Gaia satellite data set\, and will provide a much more pr
 ecise picture of how stars and their planetary systems evolve in the Mil
 ky Way.
LOCATION:PLT
CATEGORIES:Astronomy Seminar
LAST-MODIFIED:20140729T133331Z
ORGANIZER;CN=Mona Shorehdeli:
END:VEVENT
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