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SUMMARY:Linking host-star and exoplanet compositions using polluted white 
 dwarfs - Claudia Aguilera Gomez\, PUC Chile
DTSTART:20251210T131500Z
DTEND:20251210T134500Z
UID:TALK241705@talks.cam.ac.uk
CONTACT:Cristiano Longarini
DESCRIPTION:Planets are formed from the same material as their host stars 
 and as such\, the star indicates the composition of the material available
  to form planets. However\, the process of planet formation could alter th
 e composition of exoplanets\, and some key questions remain to understand 
 the interior composition of rocky exoplanets: Do planetary bodies retain t
 heir refractory elements? Are volatile elements lost due to the high tempe
 ratures in the disc? I will discuss how we can use polluted white dwarfs i
 n wide binary systems to constrain the composition of rocky exoplanets and
  find how closely the planet’s composition resembles that of their host 
 star. We compare the abundances of a polluted white dwarf\, indicative of 
 the composition of the planetary material\, with the abundances of its mai
 n-sequence wide binary companion\, which will work as a proxy for the comp
 osition of the host star. By doing this\, we can find signatures of the pl
 anet formation process\, such as loss of moderate refractories.
LOCATION:Hoyle Lecture theatre + Zoom 
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