Japan Geoscience Union Meeting 2023

Presentation information

[E] Oral

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM11] Exoplanet

Wed. May 24, 2023 9:00 AM - 10:15 AM 102 (International Conference Hall, Makuhari Messe)

convener:Takanori Kodama(The university of Tokyo), Shota Notsu(Star and Planet Formation Laboratory, RIKEN Cluster for Pioneering Research), Yui Kawashima(RIKEN), Mayuko Mori(The University of Tokyo), Chairperson:Kiyoe Kawauchi(The University of Tokyo), Yui Kawashima(RIKEN)

9:00 AM - 9:15 AM

[PEM11-01] Toward linking exoplanetary atmospheres to planet formation in the era of JWST

★Invited Papers

*Kazumasa Ohno1,2 (1.National Observatory of Japan, 2.University of California Santa Cruz)

Keywords:Exoplanet, Atmosphere, JWST, Planet formation

One of the main motivations of observing exoplanets is to understand planet formation and evolution process. In particular, the chemical compositions of exoplanetary atmospheres provide valuable clues to where and how the planet was formed. The James Webb Space Telescope (JWST) is revolutionizing our understanding on exoplanetary atmospheres thanks to its unprecedented precision and wavelength coverage. In this talk, I will first introduce several results of recent observations of JWST for hot Jupiter WASP-39 b and warm Jupiter WASP-80 b and its implications on the chemical inventory of their atmospheres.
While the observational data quality is going to grow rapidly in the coming decade, it is not straightforward to infer the planet formation process from atmospheric observations. In the rest of my talk, I will introduce several outstanding caveats regarding the way to infer the past formation process from exoplanetary atmospheres, such as the thermal structure of protoplanetary disks and disequilibrium chemistry in exoplanetary atmospheres.