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Exploration of universal star and planet formation processes through the studies of chemical structures in protoplanetary disks and exoplanetary atmospheres

Research Project

Project/Area Number 20K22376
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0204:Astronomy, earth and planetary science, and related fields
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Notsu Shota  国立研究開発法人理化学研究所, 開拓研究本部, 特別研究員 (40874649)

Project Period (FY) 2020-09-11 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords原始惑星系円盤 / アストロケミストリー / 星・惑星形成 / 原始星 / 太陽系外惑星 / スノーライン / ALMA / X線 / ダスト / 彗星 / 原始星エンベロープ / 星間化学 / C/O比
Outline of Research at the Start

本研究では、原始惑星系円盤内のダスト進化や中心星のX線&UV強度変化の影響なども考慮に入れ、原始星段階から円盤までの物理構造と化学構造の進化を同時に扱う理論計算を行い、スノーライン位置や分子組成分布の進化などを探る。並行して分子輝線の放射輸送計算を行い、スノーライン等の同定に有効な輝線の特徴を調べ、ALMA等への観測提案を行う。また系外惑星の大気化学構造と惑星形成環境の関係を探るべく、系外ガス惑星大気の化学構造計算を行い、円盤化学構造分布との比較を行う。これらの研究により、最新の円盤・系外惑星大気の観測に裏付けされた現実的な惑星形成理論の構築が期待される。

Outline of Final Research Achievements

The purpose of this research project is to develop a realistic theory of planet formation based on the latest observations and calculations of the chemical structure of the protostellar envelopes, protoplanetary disks, and exoplanetary atmospheres. We investigated the effects of X-ray emission from the central protostar on the chemical evolution of the protostellar envelope and disk, and chemical evolution (such as evolution fo snowline positions and distribution of elementral abundance ratios) in the disk where a shadow structure is formed due to dust concentration beyond the water snowline, through detailed chemical reaction network calculations. In parallel, we conducted molecular emission line observations and discussion for future observations to identify snowline positions and molecular abundance distributions in protostellar objects and disks for infrared and submillimeter wavelengths.

Academic Significance and Societal Importance of the Research Achievements

原始星段階から円盤散逸期までの物理構造と化学構造の時間進化を同時に扱うモデルの構築を進める中で、最新の観測結果による裏付けも踏まえた現実的な円盤進化・惑星形成の描像の理解に寄与した。また、原始星天体および原始惑星系円盤のスノーライン位置や分子組成分布の同定を目指した分子輝線観測(ALMA, 野辺山45m)を進めるのみならず、赤外線・サブミリ波の将来望遠鏡サイエンス検討(GREX-PLUS, ngVLA, LST等)にも大きく貢献した。さらに、円盤化学構造計算の結果は、彗星・小惑星等における物質科学的な情報の理解にも役立つことが見込まれ、高い波及効果が期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (67 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (13 results) Journal Article (5 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (44 results) (of which Int'l Joint Research: 12 results,  Invited: 5 results) Book (2 results) Remarks (3 results)

  • [Int'l Joint Research] Leiden University/University of Groningen(オランダ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Leeds/Queen’s University Belfast(英国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of California, Santa Cruz/University of Virginia/University of Michigan(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University Grenoble Alpes(フランス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] MPE/Max Planck Institute for Astronomy(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Leiden University/University of Groningen(オランダ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University of Leeds/Queen’s University Belfast(英国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University of Michigan/University of California, Santa Cruz(米国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] MPE/Max Planck Institute for Astronomy(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Leiden University/University of Groningen(オランダ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Leeds/Queen’s University Belfast(英国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Virginia/University of Michigan(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] MPE(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Journal Article] The Molecular Composition of Shadowed Proto-solar Disk Midplanes Beyond the Water Snowline2022

    • Author(s)
      Notsu Shota、Ohno Kazumasa、Ueda Takahiro、Walsh Catherine、Eistrup Christian、Nomura Hideko
    • Journal Title

      The Astrophysical Journal

      Volume: 936 Issue: 2 Pages: 188-188

    • DOI

      10.3847/1538-4357/ac87fa

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] X-ray-induced chemistry of water and related molecules in low-mass protostellar envelopes2021

    • Author(s)
      Notsu Shota、van Dishoeck Ewine F.、Walsh Catherine、Bosman Arthur D.、Nomura Hideko
    • Journal Title

      Astronomy & Astrophysics

      Volume: 650 Pages: A180-A180

    • DOI

      10.1051/0004-6361/202140667

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The formation of planetary systems with SPICA2021

    • Author(s)
      I. Kamp, M. Honda, H. Nomura, 他
    • Journal Title

      Publications of the Astronomical Society of AUstralia

      Volume: 38 Pages: 55-55

    • DOI

      10.1017/pasa.2021.31

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The composition of hot Jupiter atmospheres assembled within chemically evolved protoplanetary discs2020

    • Author(s)
      Notsu Shota、Eistrup Christian、Walsh Catherine、Nomura Hideko
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 499 Issue: 2 Pages: 2229-2244

    • DOI

      10.1093/mnras/staa2944

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Water Snowline in Protoplanetary Disks2020

    • Author(s)
      Shota Notsu
    • Journal Title

      Springer Theses

      Volume: 1 Pages: 1-134

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] FAUST: Chemical layered structures in the disk around a low-mass Class 0 protostar NGC 1333 IRAS 4C2023

    • Author(s)
      Shota Notsu
    • Organizer
      FAUST 8th plenary meeting at Univ. of Tokyo
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The Molecular Composition of Shadowed Proto-solar Disk Midplanes Beyond the Water Snowline2023

    • Author(s)
      Shota Notsu
    • Organizer
      East-Asian ALMA Science Workshop 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] FAUST: 低質量 Class 0 原始星天体 NGC 1333 IRAS 4C 円盤の化学層状構造2023

    • Author(s)
      野津 翔太, 坂井 南美, Ziwei E. Zhang, Yichen Zhang, Ana Lopez-Sepulcre, Cecilia Ceccarelli, Claudio Codella, Claire J. Chandler, 山本智, FAUST Team Members
    • Organizer
      日本天文学会 2023年春季年会, 企画セッション: ALMAサーベイ観測による星・円盤・惑星系形成研究の進展
    • Related Report
      2022 Annual Research Report
  • [Presentation] ALMA・GREX-PLUSの水輝線観測による原始惑星系円盤のH2Oスノーライン位置同定2023

    • Author(s)
      野津 翔太
    • Organizer
      新学術領域「星・惑星形成」2022年度大研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] The Molecular Composition of Shadowed Proto-solar Disk Midplanes Beyond the Water Snowline2022

    • Author(s)
      Shota Notsu
    • Organizer
      A half century of millimeter and submillimeter astronomy: Impact on astronomy/astrophysics and the future
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] X-ray-induced chemistry of water and related molecules in protostellar envelopes and disks2022

    • Author(s)
      Shota Notsu
    • Organizer
      Molecules in Extreme Environments: Near and Far
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Chemical layered structures in the NGC1333-IRAS 4C disk2022

    • Author(s)
      Shota Notsu
    • Organizer
      FAUST 7th plenary meeting at IPAG
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The Molecular Composition of Shadowed Proto-solar Disk Midplanes Beyond the Water Snowline2022

    • Author(s)
      Shota Notsu
    • Organizer
      Symposium on Next Generation Astrochemistry
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 将来の中間赤外線・遠赤外線宇宙望遠鏡が切り拓く原始惑星系円盤・惑星形成サイエンス2022

    • Author(s)
      野津 翔太
    • Organizer
      2040年代のスペース天文学研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] H2Oスノーライン以遠に影構造を持つ原始惑星系円盤の詳細化学構造2022

    • Author(s)
      野津 翔太
    • Organizer
      計算アストロバイオロジー2022 研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 次世代赤外線天文衛星 GREX-PLUS が切り拓く原始惑星系円盤サイエンス2022

    • Author(s)
      野津 翔太, 野村 英子, 井上昭雄
    • Organizer
      日本惑星科学会2022年秋季講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ALMA 分子輝線観測で迫る低質量 Class 0 原始星天体 IRAS15398-3359 の円盤 H2O, CO2 スノーライン2022

    • Author(s)
      野津 翔太, 大小田 結貴, 坂井 南美, 大和 義英, 相川 祐理, 野村 英子
    • Organizer
      日本天文学会 2022年秋季年会, 星・惑星形成(星形成)セッション
    • Related Report
      2022 Annual Research Report
  • [Presentation] ガス惑星大気のC/N/O/S元素組成や同位体: 円盤化学との関連+観測可能性2022

    • Author(s)
      野津 翔太
    • Organizer
      系外惑星大気研究会 2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] H2Oスノーライン以遠に影構造を持つ原始惑星系円盤の赤道面化学構造2022

    • Author(s)
      野津 翔太, 大野 和正, 植田 高啓, 野村 英子, Catherine Walsh, Christian Eistrup
    • Organizer
      日本地球惑星科学連合 (JpGU) 2022年大会, セッション:宇宙における物質の形成と進化
    • Related Report
      2022 Annual Research Report
  • [Presentation] H2Oスノーライン以遠に影構造を持つ原始惑星系円盤の詳細化学構造2022

    • Author(s)
      野津 翔太
    • Organizer
      第35回 理論懇シンポジウム 2022 「理論天文学・宇宙物理学の広がり:さらなる発展に向けて」
    • Related Report
      2022 Annual Research Report
  • [Presentation] H2Oスノーライン以遠に影構造を持つ原始惑星系円盤の赤道面化学構造 II. 有機分子組成 & 電離度・初期化学組成依存性2022

    • Author(s)
      野津 翔太, 大野 和正, 植田 高啓, 野村 英子, Catherine Walsh, Christian Eistrup
    • Organizer
      日本惑星科学会2022年秋季講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] GREX-PLUSによる惑星サイエンス2022

    • Author(s)
      野津翔太
    • Organizer
      GREX-PLUS サイエンス検討会 FY2021
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] H2Oスノーライン以遠に影構造を持つ原始惑星系円盤の赤道面化学構造2022

    • Author(s)
      野津翔太、大野和正、植田高啓、野村英子、Catherine Walsh, Christian Eistrup
    • Organizer
      新学術領域「新しい星形成理論によるパラダイムシフト」2021年度大研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] アルマ望遠鏡で探る惑星形成と水・有機分子の起源2022

    • Author(s)
      野津翔太
    • Organizer
      宇宙電波懇談会シンポジウム2021
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] H2Oスノーライン以遠に影構造を持つ原始惑星系円盤の詳細化学構造 II. 有機分子組成 & 電離度・初期化学組成依存性2022

    • Author(s)
      野津翔太、大野和正、植田高啓、野村英子、Catherine Walsh, Christian Eistrup
    • Organizer
      日本天文学会 2022年春季年会 星・惑星形成(原始惑星系円盤)セッション
    • Related Report
      2021 Research-status Report
  • [Presentation] 星惑星形成2022

    • Author(s)
      野津翔太
    • Organizer
      2021年度光赤天連シンポジウム 「2030年代の戦略的中型をどうするのか」
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] X-ray induced chemistry of water and related molecules in low-mass protostellar envelopes2021

    • Author(s)
      Shota Notsu
    • Organizer
      Astrochemical Frontiers 2021 - Quarantine Edition 2
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] X-ray-induced chemistry of water and related molecules in low-mass protostellar envelopes2021

    • Author(s)
      Shota Notsu
    • Organizer
      RSC/RAS Astrochemistry Group Meeting 2021 - Astrochemistry in the JWST Era
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] X-ray-induced chemistry of water and related molecules in low-mass protostellar envelopes2021

    • Author(s)
      Shota Notsu
    • Organizer
      Workshop on Interstellar Matter 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 低質量原始星エンベロープ(と円盤)の分子組成に対するX線放射の影響2021

    • Author(s)
      野津翔太、Ewine F. van Dishoeck, Catherine Walsh, Arthur D. Bosman, 野村英子
    • Organizer
      2021年 星・惑星形成研究会@博多
    • Related Report
      2021 Research-status Report
  • [Presentation] 低質量原始星エンベロープの分子組成に対するX線放射の影響2021

    • Author(s)
      野津翔太、Ewine F. van Dishoeck, Catherine Walsh, Arthur D. Bosman, 野村英子
    • Organizer
      第34回 理論懇シンポジウム 2021 「挑戦的アイデアで広げる宇宙物理の可能性」
    • Related Report
      2021 Research-status Report
  • [Presentation] H2Oスノーライン以遠に影構造を持つ原始惑星系円盤の赤道面化学構造2021

    • Author(s)
      野津翔太、植田高啓、大野和正、野村英子、Catherine Walsh, Christian Eistrup
    • Organizer
      太陽系天体若手研究会 2021 (SSBW2021)
    • Related Report
      2021 Research-status Report
  • [Presentation] X-ray-induced chemistry of water and related molecules in low-mass protostellar envelopes2021

    • Author(s)
      野津翔太
    • Organizer
      RIKEN r-EMU Workshop 2021
    • Related Report
      2021 Research-status Report
  • [Presentation] H2Oスノーライン以遠に影構造を持つ原始惑星系円盤の赤道面化学構造2021

    • Author(s)
      野津翔太、植田高啓、大野和正、野村英子、Catherine Walsh, Christian Eistrup
    • Organizer
      日本惑星科学会 2021年秋季講演会 原始惑星系円盤1 セッション
    • Related Report
      2021 Research-status Report
  • [Presentation] 次世代地上単一鏡の分子輝線観測で探る、原始星エンベロープの電離率と化学的多様性の起源2021

    • Author(s)
      野津翔太、坂井南美、大橋聡史
    • Organizer
      日本天文学会 2021年秋季年会 企画セッション:次世代サブミリ波-テラヘルツ地上単一鏡
    • Related Report
      2021 Research-status Report
  • [Presentation] ngVLAで探る、原始星エンベロープと円盤の分子組成に対するX線放射の影響2021

    • Author(s)
      野津翔太、坂井南美、 野村英子、Ewine F. van Dishoeck, Catherine Walsh, Arthur D. Bosman
    • Organizer
      日本地球惑星科学連合(JpGU) 2021年大会 セッション:宇宙における物質の形成と進化
    • Related Report
      2021 Research-status Report
  • [Presentation] Astrochemistry and molecular composition in protoplanetary disks2021

    • Author(s)
      野津翔太
    • Organizer
      日本地球惑星科学連合(JpGU) 2021年大会 セッション:アストロバイオロジー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Investigating the impact of X-rays on the molecular abundances of inner envelopes and disks around low-mass protostars with ALMA and ngVLA2021

    • Author(s)
      野津翔太
    • Organizer
      Linking the science of large interferometers in the 2030s
    • Related Report
      2021 Research-status Report
  • [Presentation] H2Oスノーライン以遠に影構造を持つ原始惑星系円盤の詳細化学構造2021

    • Author(s)
      野津翔太、大野和正、植田高啓、野村英子、Catherine Walsh, Christian Eistrup
    • Organizer
      日本天文学会 2021年秋季年会 星・惑星形成(原始惑星系円盤)セッション
    • Related Report
      2021 Research-status Report
  • [Presentation] 低質量原始星エンベロープと円盤のH2O関連分子組成に対するX線放射の影響2021

    • Author(s)
      野津 翔太
    • Organizer
      惑星系形成若手研究会 (オンライン開催)
    • Related Report
      2020 Research-status Report
  • [Presentation] X-ray induced chemistry for water and related molecules in low-mass protostar envelopes2021

    • Author(s)
      Shota Notsu
    • Organizer
      From cores to codes: planning for the next steps in planet formation (Virtual Meeting)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] ngVLAで探る、原始星エンベロープと円盤の分子組成に対するX線放射の影響2021

    • Author(s)
      野津 翔太, 坂井 南美, 野村 英子, Ewine F. van Dishoeck, Catherine Walsh, Arthur D. Bosman
    • Organizer
      日本天文学会 2021年春季年会, 企画セッション:次世代 Very Large Array (ngVLA) で切り拓く新しい天文学の地平
    • Related Report
      2020 Research-status Report
  • [Presentation] X-ray induced chemistry for water and related molecules in low-mass protostar envelopes2020

    • Author(s)
      Shota Notsu
    • Organizer
      European Astronomical Society 2020 Annual Meeting (EAS Leiden 2020, Virtual Meeting)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] X-ray induced chemistry for water and related molecules in low-mass protostar envelopes2020

    • Author(s)
      Shota Notsu, Ewine F. van Dishoeck, Catherine Walsh, Arthur D. Bosman, Hideko Nomura
    • Organizer
      JpGU-AGU Joint Meeting 2020 (Virtual Meeting)
    • Related Report
      2020 Research-status Report
  • [Presentation] 低質量原始星エンベロープのH2O関連分子組成に対するX線放射の影響2020

    • Author(s)
      野津 翔太, Ewine F. van Dishoeck, Catherine Walsh, Arthur D. Bosman, 野村 英子
    • Organizer
      日本天文学会2020年秋季年会, 星・惑星形成(星形成)セッション (オンライン開催)
    • Related Report
      2020 Research-status Report
  • [Presentation] 低質量原始星エンベロープのH2O関連分子組成に対するX線放射の影響2020

    • Author(s)
      野津 翔太
    • Organizer
      新学術領域「星惑星形成」2020年大研究会 (オンライン開催)
    • Related Report
      2020 Research-status Report
  • [Presentation] 詳細な円盤化学進化計算を初期条件としたホットジュピター大気の平衡化学構造2020

    • Author(s)
      野津 翔太, Christian Eistrup, Catherine Walsh, 野村 英子
    • Organizer
      日本惑星科学会 2020年秋季講演会 (オンライン開催)
    • Related Report
      2020 Research-status Report
  • [Presentation] 低質量原始星エンベロープのH2O関連分子組成に対するX線放射の影響2020

    • Author(s)
      野津 翔太
    • Organizer
      分子雲から原始星誕生までを追う ~新時代の星形成モデル構築に向けて~ (オンライン開催)
    • Related Report
      2020 Research-status Report
  • [Presentation] Water and 13C17O lines, and multiple ring and gap structures of the protoplanetary disk around HD 163296 observed by ALMA2020

    • Author(s)
      Shota Notsu
    • Organizer
      Five years after HL Tau: a new era in planet formation (Virtual Meeting)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Book] 天文月報 2022年4月号 「低質量原始星エンベロープと円盤の化学進化:H2Oスノーラインと中心星X線放射」2022

    • Author(s)
      野津翔太
    • Total Pages
      11
    • Publisher
      日本天文学会
    • Related Report
      2021 Research-status Report
  • [Book] 天文月報 2020年12月号 "SPICA特集 (2) SPICAで探る惑星形成過程の物質進化"2020

    • Author(s)
      本田 充彦, 野村 英子, 野津 翔太, SPICAサイエンス検討会・惑星形成班
    • Total Pages
      10
    • Publisher
      日本天文学会
    • Related Report
      2020 Research-status Report
  • [Remarks] Website of Shota Notsu

    • URL

      https://sites.google.com/view/shotanotsu/

    • Related Report
      2022 Annual Research Report 2021 Research-status Report 2020 Research-status Report
  • [Remarks] SPICAサイエンス検討会 最終報告書

    • URL

      https://www.ir.isas.jaxa.jp/SPICA/SPICA_HP/suishin/docs/SPICA_final_report_20201201.pdf

    • Related Report
      2020 Research-status Report
  • [Remarks] The ngVLA-J memo series

    • URL

      https://ngvla.nao.ac.jp/researcher/memo/

    • Related Report
      2020 Research-status Report

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Published: 2020-09-29   Modified: 2024-01-30  

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