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Special Exoplanet Science Seminar

Bayesian Inference and Exoplanet Transit Spectroscopy: Spectrum and Atmospheric Profile Recovery for Large Datasets
Presented by Gael Roudier
Jet Propulsion Laboratory

Tuesday, May 1, 2018
12:00 noon in 169-336

Abstract
The exoplanet transit spectroscopy field is experiencing an unprecedented growth. While Hubble Space Telescope (HST) observations set up the state of the art constraints on the relative contribution of opacities (main gas contributor and clouds) in the near infrared for a few dozen of targets, the Transiting Exoplanet Survey Satellite (TESS) will provide more than a thousand follow-up prime targets for future transit spectroscopy missions such as James Webb Telescope (JWST), and possibly the Fast Infrared Exoplanet Spectroscopy Survey Explorer (FINESSE) or the Atmospheric Remote-sensing Exoplanet Large-survey (ARIEL). Survey type observations will enable comparative exoplanet science, initiated with a modest sample by HST. The need for a uniform treatment of the data is a starting necessary condition in that context, breaking up with the fairly deeply established analysis with custom tools built for one specific target. As the next generation of instruments will deliver unprecedented signal quality over a large coverage of infrared wavelengths, the modeling capability, in the context of atmospheric characterization from the exoplanet spectrum, will have to grow to match the diversity of probed exoplanet atmospheres.

JPL Contact: If you would like to meet with the speaker, please contact Mark Swain.


SVCP Astrophysics


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