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SUMMARY:The disk origin of planetary elemental abundances - Mihkel Kama (L
 eiden)
DTSTART:20151202T160000Z
DTEND:20151202T170000Z
UID:TALK60726@talks.cam.ac.uk
CONTACT:Dr B.-O. Demory
DESCRIPTION:Earth-sized planets are common in the Universe. However\, we d
 o not yet know in detail what they are made of\, or why. This may be cruci
 al for assessing their habitability. A case in point is the low carbon abu
 ndance of Earth: while it is essential to life\, too much carbon may adver
 sely affect habitability. Most planetary abundance anomalies likely origin
 ate in the protoplanetary disk stage\, but the processes involved are not 
 yet well constrained by observations. I will present recent results on ele
 mental abundances in disks\, focussing on the carbon and oxygen abundances
  and a novel look at the composition of gas and dust in the inner 1 astron
 omical unit. I will conclude with a discussion of the implications for our
  understanding of planetary systems\, and a preview of upcoming developmen
 ts.
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
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