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PRODID:https://murmitoyen.com/events/vanille/udem/
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DTSTAMP:20260416T190848
DTSTART:20130321T113000
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URL:https://murmitoyen.com/events/vanille/udem/detail/183647
LOCATION:Université de Montréal - Pavillon Roger-Gaudry\, 2900\, chemin d
 e la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:Taking a Census of the Local White Dwarf Population
DESCRIPTION:John Subasavage\, United States Naval Observatory - Flagstaff S
 tationRésumé/abstract:White dwarfs (WDs)\, or stellar embers\, hold keys
  to unlocking a number of cosmic secrets.  The vast majority of stars wil
 l become WDs and thus\, they represent tracers of what was in our Galaxy. 
 The local sample of WDs are the brightest and most easily studied of this 
 intrinsically faint class of objects.  I will present a census of WDs wit
 hin 25 parsecs of the Sun\, including the latest results from two astromet
 ric WD surveys - CTIOPI and the USNO parallax program.  I will outline a 
 recent effort\, known as the SOAR & SMARTS White Dwarf Survey (SSSWDS)\, t
 o better complete this sample via new WD discovery using astrometry\, phot
 ometry and\, spectroscopy.  Lastly\, I will highlight additional data for
  a few exceptional WDs that have surfaced as a result of these ongoing sur
 veys.Ce séminaire est présenté par le groupe astronomie et astrophysiqu
 e du Département de physique de l'Université de Montréal.
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