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DIX Planetary Science Seminar

Tuesday, October 31, 2023
4:00pm to 5:00pm
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South Mudd 365
Isotopes and the characterization of extrasolar planets
Yapeng Zhang, Postdoc (51 Peg Fellow), Astronomy, Caltech,

Exoplanet atmospheres with imprints from their history open an important avenue to trace the origin and evolution of planets. With medium and high-dispersion spectroscopy, we can resolve atomic and molecular spectral features into unique forests of lines that serve as fingerprints for identifying different species and probing structures and dynamics of exoplanet atmospheres. I will talk about high-resolution spectral characterization of atmospheres from wide-orbit super Jovian exoplanets to close-in ultra-hot Jupiters, highlighting the discovery of minor isotopologues in exoplanets and brown dwarfs, and the trend of atomic absorption strengths in a sample of ultra-hot Jupiters. These works add to the efforts to link observations of exoplanet atmospheres to planet formation and evolution processes.

For more information, please contact Kim Paragas by phone at 626-395-6960 or by email at [email protected].