Transiting exoplanet atmospheres with the JWST
Amélie GRESSIER (STScI, Baltimore)
Jeudi 27/06/2024, 11:00
Bat 713, salle de réunions Copernic , CEA Saclay, Orme des Merisiers

In its first years of scientific operations, the James Webb Space Telescope (JWST) has revolutionized our understanding of transiting exoplanet atmospheres. Its spectroscopic infrared capabilities have precisely detected water (H2O), carbon dioxide (CO2), and carbon monoxide (CO), and provided the first detailed observations of methane (CH4) absorption. JWST has also revealed diverse photochemical and disequilibrium processes in giant exoplanet atmospheres. In this talk, I will give an overview of the collaborative work from various GTO and GO programs. I will present precise spectroscopic findings and discuss insights from TSO observations of diverse exoplanet atmospheres. Specifically, I will showcase the NIRISS emission spectrum of the hot Jupiter WASP-17b, the NIRISS and NIRSpec transmission spectrum of the Sub-Neptune HAT-P-26b, and early results on a Super-Earth and a rocky planet using NIRSpec and MIRI photometry respectively.

Contact local & organisation : Pierre-Olivier LAGAGE

Contact : Frederic GALLIANO


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