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SUMMARY:Towards 3D-Mapping of Exoplanet Atmospheres - Julien de Wit (MIT)
DTSTART:20140617T153000Z
DTEND:20140617T163000Z
UID:TALK53050@talks.cam.ac.uk
CONTACT:Dr B.-O. Demory
DESCRIPTION:Within two decades\, the field of exoplanetology has broadened
  our perspective on planetary systems with more than 1800 planets found in
  over 1100 systems different from ours. Research priorities are now moving
  from planet detection to planet characterization. During this seminar\, I
  introduce a method to map exoplanet atmospheres—while their host stars 
 cannot be resolved. I discuss the degeneracies behind exoplanet mapping an
 d present a framework to mitigate consistently their effects. I introduce 
 two applications to the hot Jupiters HD189733b and Kepler-7b in the infrar
 ed and in the visible\, respectively. Finally\, I discuss the potential of
  the method to yield constraints on the 3D temperature\, composition\, and
  circulation patterns of a planet’s atmosphere in the near future. Befor
 e wrapping up\, I briefly introduce a second method\, MassSpec\, that aims
  to determine the atmospheric properties of transiting exoplanets and thei
 r masses solely from their transmission spectra—their star’s light fil
 tered by their atmospheres during transits. Within the next decade\, MassS
 pec will be applicable to exoplanets as small as Earth\, and hence will pl
 ay a pivotal role in the identification of the first habitable exoplanet.
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
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