日本地球惑星科学連合2023年大会

講演情報

[E] 口頭発表

セッション記号 P (宇宙惑星科学) » P-EM 太陽地球系科学・宇宙電磁気学・宇宙環境

[P-EM11] 系外惑星

2023年5月24日(水) 09:00 〜 10:15 102 (幕張メッセ国際会議場)

コンビーナ:小玉 貴則(東京大学)、野津 翔太(理化学研究所 開拓研究本部 坂井星・惑星形成研究室)、川島 由依(理化学研究所)、森 万由子(東京大学)、座長:川内 紀代恵(東京大学)、川島 由依(理化学研究所)

09:00 〜 09:15

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

★Invited Papers

*大野 和正1,2 (1.国立天文台、2.カリフォルニア大学サンタクルーズ校)

キーワード:系外惑星、大気、JWST、惑星形成

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.