2023年度学院等開講科目理学院地球惑星科学系地球惑星科学コース

宇宙地球科学特論B

開講元: 地球惑星科学コース
担当教員: 奥住聡
授業形態: 講義 (対面型)
メディア利用科目: -
曜日・時限 (講義室): 月5-6 (石川台2号館Ishikawadai Bldg. 2　307) / 木5-6 (石川台2号館Ishikawadai Bldg. 2　307)
クラス: -
科目コード: EPS.A411
単位数: 200
開講時期: 2023年度
開講クォーター: 1Q
シラバス更新日: 2025年7月8日
使用言語: 英語

シラバス

授業の目的（ねらい）、概要

This course deals with the physics of gas and dust evolution in protoplanetary disks. Protoplanetary disks are gas disks surrounding young stars, and the solids in the disks are the building blocks of planets and other solid bodies. We will learn how micron-sized dust particles form kilometer-sized solid bodies called planetesimals.

到達目標

1) Understand the physical processes governing the evolution of gas and dust in protoplanetary disks, including the solar nebula
2) Become familiar with order-of-magnitude estimates --- how to understand physics underlying complex phenomena

キーワード

planet formation, protoplanetary disks, planetesimals, dust

学生が身につける力

専門力
教養力
コミュニケーション力
展開力 (探究力又は設定力)
展開力 (実践力又は解決力)

授業の進め方

Each consists of a lecture and question time. In question time, students ask the instructor questions about the topic dealt with in the previous class.

授業計画・課題

	授業計画	課題
第1回	Introduction	Understand the basic concepts of protoplanetary disks and planetesimals
第2回	Protoplanetary disks 1: Structure	Understand the structure of disks around young stars
第3回	Protoplanetary disks 2: Dynamics	Understand how protoplanetary disks evolves
第4回	Protoplanetary disks 3: Observations	Understand how dust particles move in gas disks
第5回	Particle motion in laminar protoplanetary disks	Understand the vertical settling and radial drift of dust
第6回	Particle motion in turbulence 1: diffusion	Understand the notion of diffusion
第7回	Particle motion in turbulence 2: collisions	Understand how turbulence induces particles' collision velocity
第8回	Mechanics of dust aggregates 1: theory	Understand how small grains stick together and form macroscopic bodies
第9回	Mechanics of dust aggregates 2: simulations and experiments	Understand how small grains stick together and form macroscopic bodies
第10回	Planetesimal formation 1: global dust evolution	Understand how dust grains grow and migrate in protoplanetary disks
第11回	Planetesimal formation 2: dust concentration	Understand how micron-sized dust grains form (and do not form) kilometer-sized solid bodies
第12回	Motion of particles around a planet(esimal)	Understand Hill's equation
第13回	Pebble accretion	Understand how large solid bodies accrete dust particles in gas disks
第14回	Synthesis	Understand outstanding issues in planetesimal formation studies

準備学修(事前学修・復習)等についての指示

学修効果を上げるため，教科書や配布資料等の該当箇所を参照し，「毎授業」授業内容に関する予習と復習（課題含む）をそれぞれ概ね100分を目安に行うこと。

教科書

特に指定しない

参考書、講義資料等

Handouts will be provided.

成績評価の方法及び基準

Grades will be based on in-class discussion and/or reports.

履修の条件・注意事項

Basic knowledge of physics, astronomy, and the solar system