Göttingen 2025 – wissenschaftliches Programm

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EP: Fachverband Extraterrestrische Physik

EP 9: Exoplanets and Astrobiology

EP 9.1: Hauptvortrag

Mittwoch, 2. April 2025, 16:15–16:45, ZHG005

A JWST View of Exoplanet Atmospheres: Everything We Dreamed Of, and More — •Laura Kreidberg — Königstuhl 17, 69117 Heidelberg

The recent launch of the James Webb Space Telescope (JWST) has revolutionized the field of exoplanet atmosphere characterization, thanks to its unprecedented sensitivity and broad wavelength coverage. In this talk, I will give a tour of the latest JWST results for transiting exoplanets, from gas giants down to rocky worlds. For the largest planets, I'll focus on the complex physical processes recently revealed in their atmospheres, including photochemistry, 3D effects, and cloud formation. Pushing down to smaller worlds, I'll share the first measurements of chemical composition for the elusive sub-Neptune population, and address the question of whether water worlds exist. In closing, I will give an update on the rapidly evolving topic of rocky planet characterization, including which (if any) rocky planets have atmospheres at all, and what their possible atmospheric compositions could be.

Keywords: exoplanet; JWST; atmosphere