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SUMMARY:Probing Exoplanet Atmospheres: Challenges with Observations and Da
 ta Analysis - Neale Gibson (ESO)
DTSTART:20140513T153000Z
DTEND:20140513T163000Z
UID:TALK51968@talks.cam.ac.uk
CONTACT:David Titterington
DESCRIPTION:Radial velocity and transit surveys have revealed a large and 
 diverse population of exoplanets in our galaxy.  To truly understand their
  diversity we need to obtain spectra of their atmospheres in order to prob
 e their compositions and understand the dominant physical processes.  Tran
 siting planets allow such measurements via transmission and eclipse spectr
 oscopy\, which has been a very active field of research over the last deca
 de.  However\, both space and ground-based observations present significan
 t challenges\, as none of the instruments commonly used were designed with
  the required level of precision and stability in mind.  Here\, I will dis
 cuss the observations and data analysis required to extract transmission s
 pectra\, and the resulting difficulties in obtaining robust spectra of exo
 planets.  I will present results of a campaign to obtain the first complet
 e UV to NIR transmission spectra of the hot Jupiter HD 189733b\, and effor
 ts to obtain ground based transmission spectra using differential spectrop
 hotometry.\n
LOCATION:Sackler Lecture Theatre\, Institute of Astronomy
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