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SUMMARY:Cloudy with a chance of rain - Hannah Wakeford (NASA/GSFC)
DTSTART:20160420T150000Z
DTEND:20160420T160000Z
UID:TALK65063@talks.cam.ac.uk
CONTACT:Dr B.-O. Demory
DESCRIPTION:Deciphering the role of clouds is central to our understanding
  of exoplanet atmospheres\, as they have a direct impact on the temperatur
 e and pressure structure\, and observability of the planet. It is expected
  that\, like all the planetary bodies in our solar system\, exoplanet atmo
 spheres will also have substantial cloud coverage\, and evidence is mounti
 ng for clouds in a number of hot Jupiters. Examining the condensation chem
 istry across vast temperature ranges reveals the probable cloud species re
 sponsible for masking and obscuring transmission spectral features. We use
  these species\, and two key exoplanet examples\, to determine the observa
 ble properties of clouds for exoplanets to determine if atmospheric inform
 ation key to observations and models can be retained. For condensate cloud
 s vibrational mode features are shown to be prominent when the clouds are 
 composed of small sub-micron sized particles and can be associated with an
  accompanying optical scattering slope. These infrared features have poten
 tial implications for future exoplanetary atmosphere studies conducted wit
 h JWST\, where such vibrational modes distinguishing condensate species ca
 n be probed at longer wavelengths.
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
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