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SUMMARY:Atmospheric spectra of hot exoplanets - Frédéric Pont   (Univers
 ity of Exeter)
DTSTART:20120514T150000Z
DTEND:20120514T160000Z
UID:TALK37776@talks.cam.ac.uk
CONTACT:Jérôme Guilet
DESCRIPTION:By measuring transiting planets\, we can now “see” the atm
 ospheres of hot gas giants\, and measure spectroscopic features from the U
 V to the near infrared. The atmosphere of these planets are quite differen
 t from anything in the solar system\, with supersonic winds\, rock and iro
 n rains\, and titanium oxide sunblock to name but a few exotic features.\n
 \nA large observational effort has been invested in measuring molecules in
  these atmospheres with the Spitzer satellite. Our group has concentrated 
 on transmission spectroscopy in the visible\, which is more sensitive to t
 he physical conditions in the atmosphere\,  and the presence of dust\, haz
 e and clouds.\n\nThe main result – “as usual”\, one is tempted to sa
 y – is that the spectra sketched by the observations bear little resembl
 ance with model expectations. In this talk I will evoke the results of our
  Hubble and ground-based observations\, propose some possible interpretati
 on\, and sketch the coming observations\, including our on-going 200-orbit
  programme with the Hubble Space Telescope.
LOCATION:MR14\,  Centre for Mathematical Sciences\, Wilberforce Road\, Cam
 bridge
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