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SUMMARY:Structure and evolution of exoplanets: from super-Earths to super-
 Jupiters - Isabelle Baraffe\, University of Exeter
DTSTART:20110217T163000Z
DTEND:20110217T173000Z
UID:TALK25735@talks.cam.ac.uk
CONTACT:scott chapman
DESCRIPTION:The number of exoplanets newly discovered increases rapidly wi
 th time\,\nproviding new and sometime puzzling informations about their fo
 rmation and\ntheir structure. In this talk\, I will examine our present un
 derstanding of the internal structure \nand evolution of exoplanets.The de
 tection of transiting planets around their parent star allow the \ndetermi
 nation of their mass and radius\, and thus of their mean density. Such val
 uable information \nindicates that a significant fraction of these planets
  are enriched in heavy elements \n(ice\, rocks)\, as observed in the giant
  planets of our Solar System. The\ntreatment of heavy materials in planeta
 ry interior and the resulting\nuncertainties on the mass-radius relationsh
 ip will be discussed.\nI will also address the case of short-period\, stro
 ngly irradiated planets and \nreview the different mechanisms\, including 
 tidal dissipation\, \nwhich have been suggested to explain their anomalous
 ly large radii.
LOCATION:Sackler Lecture Theatre\, IoA (tea at 4:00 pm)
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