Planet のバックアップ(No.89)

惑星セミナー2022 †

惑星セミナーは原則として毎週木曜日の15:00から開催しています。（連絡係：伊藤祐一, 高橋実道，古家健次）
astro-phセミナーは毎週月曜日の12:00から開催しています。（連絡係：Chanoul Seo，瀧哲朗，松本侑士）

日程	発表	タイトル	Remarks	担当
前期第1回 4/14 15:00-	All members	Self-introduction		伊藤
前期第2回 4/28 15:00-	Masahiro Ikoma (NAOJ)	Five key questions answered via the analysis of 25 hot Jupiter atmospheres in eclipse		高橋
前期第3回 5/10 15:00-	Sho Shibata (University of Zurich)	Exploring formation pathways of gas giant planets using planetesimal accretion	Tuesday	古家
前期第4回 5/19 15:00-	Kenji Furuya (NAOJ)	Different degree of nitrogen and carbon depletion in protoplanetary disks		古家
前期第X回 7/5 15:00-	Hidenori Genda (ELSI)	TBD	Tuesday	高橋

5/10 Sho Shibata (University of Zurich), Exploring formation pathways of gas giant planets using planetesimal accretion: The composition of gas giant planets is a useful tracer of planet formation. Recent observations of gas giant planets suggest that planetesimal accretion had occurred in their formation stage. In our previous studies, we found that large amount of planetesimals can be captured by a protoplanet when the protoplanet migrates into the region which we call as sweet spot for planetesimal accretion. In this talk, we will apply the theory of sweet spot to the formation of close-in gas giant planets and Jupiter and Saturn. We will discuss the formation history of those planets using the planetesimal accretion process.