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SUMMARY:Insights into the birth and death of exoplanetary systems from pol
 luted white dwarfs - Andy Buchan (Warwick)
DTSTART:20241105T130000Z
DTEND:20241105T140000Z
UID:TALK224029@talks.cam.ac.uk
CONTACT:Dr Dolev Bashi
DESCRIPTION:Most stars with planetary systems will end their lives as whit
 e dwarfs. A significant fraction of white dwarfs have accreted metals from
  their own planetary systems. The relative quantities of these metals can 
 be measured\, thereby turning these so-called “polluted” white dwarfs 
 into an unlikely source of valuable information about exoplanetary materia
 l. In this talk\, I will discuss some of the key results from modelling wh
 ite dwarf pollution\, including the formation conditions of exoplanetary m
 aterial\, the possible presence of water\, and the fate of planets after t
 he death of their star. I will also present preliminary results characteri
 sing uncertainties associated with the white dwarf atmosphere itself\, and
  I will discuss their impact on our understanding of exoplanetary material
 .
LOCATION:Ryle seminar room + ONLINE - Details to be sent by email
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