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Developing a realistic model of protoplanetary disk evolution with radiation hydrodynamics simulations

Research Project

Project/Area Number 19K23469
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

Nakatani Riouhei  国立研究開発法人理化学研究所, 開拓研究本部, 基礎科学特別研究員 (40846391)

Project Period (FY) 2019-08-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords惑星形成 / 原始星円盤 / 原始惑星系円盤 / デブリ円盤 / 輻射流体計算 / 電波観測 / 星形成 / ダスト / 星間化学 / 輻射流体シミュレーション
Outline of Research at the Start

星の進化過程で、若い星周りには原始惑星系円盤と呼ばれる幾何学的に薄い円盤が形成する。この円盤は惑星系の母天体であるため、その形成や進化を解明することは特に天文学・惑星科学分野において重要である。本研究では、原始惑星形円盤の主成分であるガス・ダストの物理的・化学的な構造を明らかにするため、輻射多流体シミュレーションを遂行する。既に開発している輻射流体数値計算コードを多流体コードにアップデートし、ガスとダストの力学的・化学的進化を独立かつ自己整合的に追う。円盤内ガス・ダストの多次元的な分布を数値計算で直接的に求め、次世代望遠鏡による高解像度観測との比較が可能な円盤モデルを世界に先駆け構築する。

Outline of Final Research Achievements

The purpose of this research is to understand the internal structures and the evolution of protostellar and protoplaneatry disks, which are the birthplace of planets. I have conducted the researches from both of the observational and theoretical viewopints. The main results are summarized as follows. First, we have detected an indicative of planet formation in a youngest-ever protostellar system. Second, in an independent theoretical research regarding so-called "gas-rich debris disks," which are the gas disks that are unexpectedly long-lived, we proposed a new model that can extend the lifetime of the disks. Our code has been distribured to other researchers worldwide and has been used in various topics of studies, such as molecular clouds, planetary atmosphere, minihalos, and blackholes.

Academic Significance and Societal Importance of the Research Achievements

本研究成果はこれまでの標準的な惑星形成論を覆すもの、また未解明問題の解明に向けての光明となるものである。(1)の成果は、これまで標準理論で考えられていたよりもかなり早い段階で惑星形成が起こっていることを示すもので、惑星形成論に修正を迫る結果である。(2)の成果は、長生きが可能な少し特異な性質を持つ円盤系では、月のような衛星形成が抑制される可能性があるため、生命居住環境構築可能性に示唆を与える結果である。(地球における月の形成は生命居住環境が形成する上で必須と考えられている。)(1)と(2)の成果は共に、惑星形成論だけでなく生命誕生の謎を迫る上でも示唆に富んだ重要な成果である。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (33 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (7 results) Journal Article (12 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 12 results,  Open Access: 7 results) Presentation (14 results) (of which Int'l Joint Research: 7 results,  Invited: 4 results)

  • [Int'l Joint Research] NRAO(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] テュービンゲン大学/マックスプランク研究所(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] ASIAA(台湾)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] NRAO(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] テュービンゲン大学/マックスプランク研究所(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] NRAO(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] ASIAA(その他の国・地域)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Rapid Growth of Seed Black Holes during Early Bulge Formation2022

    • Author(s)
      Inayoshi Kohei、Nakatani Riouhei、Toyouchi Daisuke、Hosokawa Takashi、Kuiper Rolf、Onoue Masafusa
    • Journal Title

      The Astrophysical Journal

      Volume: 927 Issue: 2 Pages: 237-237

    • DOI

      10.3847/1538-4357/ac4751

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Stellar wind effect on the atmospheric escape of hot Jupiters and their Lyα and Hα transits2022

    • Author(s)
      Mitani Hiroto、Nakatani Riouhei、Yoshida Naoki
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 512 Issue: 1 Pages: 855-860

    • DOI

      10.1093/mnras/stac556

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Misaligned Rotations of the Envelope, Outflow, and Disks in the Multiple Protostellar System of VLA 1623-2417: FAUST. III2022

    • Author(s)
      Ohashi Satoshi、Codella Claudio、Sakai Nami、et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 927 Issue: 1 Pages: 54-54

    • DOI

      10.3847/1538-4357/ac4cae

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Photoevaporation of Grain-depleted Protoplanetary Disks around Intermediate-mass Stars: Investigating the Possibility of Gas-rich Debris Disks as Protoplanetary Remnants2021

    • Author(s)
      Nakatani Riouhei、Kobayashi Hiroshi、Kuiper Rolf、Nomura Hideko、Aikawa Yuri
    • Journal Title

      The Astrophysical Journal

      Volume: 915 Issue: 2 Pages: 90-90

    • DOI

      10.3847/1538-4357/ac0137

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Ring Formation by Coagulation of Dust Aggregates in the Early Phase of Disk Evolution around a Protostar2021

    • Author(s)
      Ohashi, S., Kobayashi, H., Nakatani, R., Okuzumi, S., Tanaka, H., Murakawa, K., Zhang, Y., Liu, H. B., & Sakai, N.
    • Journal Title

      The Astrophysical Journal

      Volume: 907 Issue: 2 Pages: 80-80

    • DOI

      10.3847/1538-4357/abd0fa

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] FAUST. II. Discovery of a Secondary Outflow in IRAS 15398-3359: Variability in Outflow Direction during the Earliest Stage of Star Formation?2021

    • Author(s)
      Okoda Yuki、Oya Yoko、Francis Logan、... Nomura Hideko ... et al. (69人中47番目)
    • Journal Title

      The Astrophysical Journal

      Volume: 910 Issue: 1 Pages: 11-11

    • DOI

      10.3847/1538-4357/abddb1

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Radiation Hydrodynamics Simulations of Protoplanetary Disks: Stellar Mass Dependence of the Disk Photoevaporation Rate2021

    • Author(s)
      Komaki Ayano、Nakatani Riouhei、Yoshida Naoki
    • Journal Title

      The Astrophysical Journal

      Volume: 910 Issue: 1 Pages: 51-51

    • DOI

      10.3847/1538-4357/abe2af

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Substructure Formation in a Protostellar Disk of L1527 IRS2020

    • Author(s)
      Nakatani Riouhei、Liu Hauyu Baobab、Ohashi Satoshi、Zhang Yichen、Hanawa Tomoyuki、Chandler Claire、Oya Yoko、Sakai Nami
    • Journal Title

      The Astrophysical Journal

      Volume: 895 Issue: 1 Pages: L2-L2

    • DOI

      10.3847/2041-8213/ab8eaa

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] FAUST I. The hot corino at the heart of the prototypical Class I protostar L1551 IRS52020

    • Author(s)
      Bianchi E、Chandler C J、Ceccarelli C ... Nomura, H. ... et al. (66人中46番目)
    • Journal Title

      Monthly Notices of the Royal Astronomical Society: Letters

      Volume: 498 Issue: 1 Pages: L87-L92

    • DOI

      10.1093/mnrasl/slaa130

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hydrodynamical simulations of protoplanetary disks including irradiation of stellar photons2020

    • Author(s)
      Flores-Rivera Lizxandra、Flock Mario、Nakatani Riouhei
    • Journal Title

      Astronomy & Astrophysics

      Volume: 644 Pages: A50-A50

    • DOI

      10.1051/0004-6361/202039294

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Photoevaporation of Minihalos During Cosmic Reionization: Primordial and Metal-enriched Halos2020

    • Author(s)
      Nakatani Riouhei、Fialkov Anastasia、Yoshida Naoki
    • Journal Title

      The Astrophysical Journal

      Volume: 905 Issue: 2 Pages: 151-151

    • DOI

      10.3847/1538-4357/abc5b4

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Photoevaporation of Molecular Gas Clumps Illuminated by External Massive Stars: Clump Lifetimes and Metallicity Dependence2019

    • Author(s)
      Nakatani Riouhei、Yoshida Naoki
    • Journal Title

      The Astrophysical Journal

      Volume: 883 Issue: 2 Pages: 127-127

    • DOI

      10.3847/1538-4357/ab380a

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 近年観測がもたらす惑星形成論への新展開2022

    • Author(s)
      仲谷崚平
    • Organizer
      初代星・初代銀河研究会2021
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 原始惑星系円盤光蒸発の再考2021

    • Author(s)
      仲谷崚平、高棹真介
    • Organizer
      天文学会 2021年秋季年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 原始惑星系円盤散逸における金属量の効果2021

    • Author(s)
      仲谷崚平
    • Organizer
      新学術「星惑星形成」オンライン研究会2021『低金属量環境下における星・惑星形成』
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 円盤光蒸発の基礎理論の構築に向けて2021

    • Author(s)
      仲谷崚平
    • Organizer
      2021年 星・惑星形成研究会@博多
    • Related Report
      2021 Annual Research Report
  • [Presentation] 輻射流体シミュレーションを用いたガスリッチデブリ円盤の始原ガス説の検証2021

    • Author(s)
      仲谷崚平、小林浩、Rolf Kuiper、野村英子、相川祐理
    • Organizer
      天文学会春季年会
    • Related Report
      2020 Research-status Report
  • [Presentation] 進化後期段階における原始惑星系円盤の光蒸発2021

    • Author(s)
      仲谷崚平、小林浩、Rolf Kuiper、野村英子、相川祐理
    • Organizer
      惑星系形成若手研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] Radiation Hydrodynamics Simulations of Photoevaporating Disks: Dependencies on Disk Properties2020

    • Author(s)
      Riouhei Nakatani
    • Organizer
      International Conference of the Research Unit "Planet Formation Witnesses and Probes: Transition Disks"
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Dust Substructure in a Protostellar Disk2020

    • Author(s)
      Riouhei Nakatani
    • Organizer
      UT Joint Workshop on Protoplanetary Disks and Planets
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ダスト枯渇した原始惑星系円盤の光蒸発:ガスリッチ・デブリ円盤形成との関連性2020

    • Author(s)
      仲谷崚平、小林浩、Rolf Kuiper、野村英子、相川祐理
    • Organizer
      新学術領域「星惑星形成」2020年度大研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] Radiation Hydrodynamics Simulations of Photoevaporating Protoplanetary Disks with Various Metallicities2019

    • Author(s)
      Riouhei Nakatani, Takashi Hosokawa, Naoki Yoshida, Hideko Nomura, Rolf Kuiper
    • Organizer
      In the Spirit of Lyot 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Radiation Hydrodynamics Simulations of Photoevaporating Protoplanetary Disks: Metallicity Dependence2019

    • Author(s)
      Riouhei Nakatani, Takashi Hosokawa, Naoki Yoshida, Hideko Nomura, Rolf Kuiper
    • Organizer
      Planet2/RESCEU Symposium 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Radiation Hydrodynamics Simulations of Photoevaporating Protoplanetary Disks: Implications to Metallicity Dependence of Disk Lifetimes2019

    • Author(s)
      Riouhei Nakatani, Takashi Hosokawa, Naoki Yoshida, Hideko Nomura, Rolf Kuiper
    • Organizer
      Subaru Telescope 20th Anniversary
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Photoevaporation of Protoplanetary Disks: Metallicity Dependence and Lifetimes2019

    • Author(s)
      Riouhei Nakatani, Takashi Hosokawa, Naoki Yoshida, Hideko Nomura, Rolf Kuiper
    • Organizer
      NAOJ Planet Formation Workshop
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Substructure Formation in a Protostellar Disk around a Class 0 Protostar2019

    • Author(s)
      Riouhei Nakatani, Hauyu Baobab Liu, Satoshi Ohashi, Yichen Zhang, Tomoyuki Hanawa, Claire Chandler, Yoko Oya, Nami Sakai
    • Organizer
      Workshop for Protoplanetary Disks and Exoplanets
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-09-03   Modified: 2023-01-30  

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