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SUMMARY:The dynamic circumstellar environment around white dwarfs - Laura 
 Rogers / IoA
DTSTART:20241113T134000Z
DTEND:20241113T140500Z
UID:TALK224494@talks.cam.ac.uk
CONTACT:Xander Byrne
DESCRIPTION:Evidence for the survival of outer planetary systems to the wh
 ite dwarf phase comes from observations of planetary material polluting th
 e atmospheres of white dwarfs. These observations uniquely reveal the chem
 ical composition of exo-planetary material. Studies of circumstellar dust 
 and gas close to white dwarfs help trace how planetary bodies are perturbe
 d and accreted onto these stars. This scattering process is thought to be 
 stochastic\, with the potential for variability observable on human timesc
 ales. Indeed\, some white dwarfs show variability in their dust and gas\, 
 but we are yet to have a comprehensive understanding of these dynamic circ
 umstellar environments. I will present findings from recent studies on cir
 cumstellar gas and dust around white dwarfs polluted with planetary materi
 al\, including the first detection of simultaneous dust and gas emission f
 rom a white dwarf disc\, advancing us towards a holistic picture of these 
 systems.
LOCATION:The Hoyle Lecture Theatre + Zoom 
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