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2019 Fiscal Year Research-status Report

From Protoplanetary Disks to the Solar System: Chemical Evolution of Organic Molecules

Research Project

Project/Area Number 19K03910
Research InstitutionNational Astronomical Observatory of Japan

Principal Investigator

野村 英子  国立天文台, 科学研究部, 教授 (20397821)

Co-Investigator(Kenkyū-buntansha) 薮田 ひかる  広島大学, 理学研究科, 教授 (30530844)
Project Period (FY) 2019-04-01 – 2024-03-31
Keywords星・惑星形成 / 原始惑星系円盤 / 星間化学
Outline of Annual Research Achievements

R1年度は、(1)氷マントル反応の実験に基づき反応率の定式化を行い、それを用いて氷マントル反応を含めた化学反応ネットワークを構築した。さらに、その反応ネットワークをFU Ori型アウトバースト期の原始惑星系円盤の物理状態に適用して計算を行い、温度が120K以上の高温下で氷マントル反応が効率よく起こることを示した。その結果を、特にカルバミン酸アンモニウム塩の生成に着目し、67P/チュリモフ・ゲラシメンコ彗星の観測結果と比較して、彗星形成時の円盤の物理状態、特に質量降着率に制限を与えた。これにより、彗星構成物質生成において氷反応が果たしうる重要性を示した。また、(2)円盤のモデル計算に基づき、次世代赤外線衛星SPICAにより、円盤内縁から放射されるメタノール分子輝線が観測可能であることを示した。これとALMA観測により、円盤内外の幅広い温度範囲における氷表面反応が検証できる可能性が示された。さらに、(3)原始惑星系円盤における窒素同位体を含む化学反応計算を行い、ALMA観測により円盤モデルに制限を与える準備を整えた。また一方で、(4)小惑星リュウグウ表面の反射スペクトルと似たスペクトルを示したJbilet Winselwan隕石の炭化水素分析、および酸不溶性有機物の元素・同位体・分光分析を行い、小惑星リュウグウと隕石グループとの対応づけを試みた。その結果、リュウグウは穏やかな加熱を受けたCM隕石またはTagish Lake隕石に類似する可能性が示唆された。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

R1年度は、氷反応を含めた化学反応ネットワークを構築し、原始惑星系円盤の物理状態下での計算に成功した。さらに、計算結果にもとづき、彗星物質生成過程への制限を与えた。一方で、小惑星リュウグウと類似の隕石の室内分析により、リュウグウ構成物質に制限を与えた。

Strategy for Future Research Activity

原始惑星系円盤における窒素同位体を含む化学反応計算を行い、ALMA観測により円盤モデルに制限を与える。また、氷マントル反応を用いた化学反応計算をはやぶさ2の観測結果に応用させる手法を開発する。

  • Research Products

    (33 results)

All 2020 2019 Other

All Int'l Joint Research (4 results) Journal Article (16 results) (of which Int'l Joint Research: 13 results,  Peer Reviewed: 11 results,  Open Access: 2 results) Presentation (13 results) (of which Int'l Joint Research: 12 results,  Invited: 2 results)

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

    • Country Name
      UNITED KINGDOM
    • Counterpart Institution
      University of Leeds/Queen’s University Belfast
  • [Int'l Joint Research] Aix-Marseille Universite(フランス)

    • Country Name
      FRANCE
    • Counterpart Institution
      Aix-Marseille Universite
  • [Int'l Joint Research] National Central University(台湾)

    • Country Name
      その他の国・地域
    • Counterpart Institution
      National Central University
  • [Int'l Joint Research] Kyung Hee University(韓国)

    • Country Name
      KOREA (REP. OF KOREA)
    • Counterpart Institution
      Kyung Hee University
  • [Journal Article] Possibility to locate the position of the H2O snowline in protoplanetary disks through spectroscopic observations2020

    • Author(s)
      Notsu Shota、Nomura Hideko、Walsh Catherine、Honda Mitsuhiko、Hirota Tomoya、Akiyama Eiji、Tsukagoshi Takashi、Booth Alice S.、Millar T. J.
    • Journal Title

      Proceedings of the International Astronomical Union

      Volume: 14 Pages: 393~395

    • DOI

      10.1017/S1743921319003053

    • Int'l Joint Research
  • [Journal Article] Searching for methylamine in Orion-KL using ALMA archival data2020

    • Author(s)
      Minamoto Harumi、Oya Yoko、Tomoya Hirota、Nomura Hideko
    • Journal Title

      Proceedings of the International Astronomical Union

      Volume: 14 Pages: 386~387

    • DOI

      10.1017/S1743921319002965

  • [Journal Article] ALMA observations of sulfur-bearing molecules in protoplanetary disks2020

    • Author(s)
      Nomura H.、Higuchi A.、Sakai N.、Yamamoto S.、Nagasawa M.、Tanaka K.K.、Miura H.、Nakamoto T.、Tanaka H.、Yamamoto T.、Walsh C.、Millar T.J.
    • Journal Title

      Proceedings of the International Astronomical Union

      Volume: 14 Pages: 360~361

    • DOI

      10.1017/S1743921319002072

    • Int'l Joint Research
  • [Journal Article] Chemistry in carbon-rich protoplanetary disks: Effect of carbon grain destruction2020

    • Author(s)
      Wei Chen-En、Nomura Hideko、Lee Jeong-Eun、Ip Wing-Huen、Walsh Catherine、Millar T. J.
    • Journal Title

      Proceedings of the International Astronomical Union

      Volume: 14 Pages: 289~290

    • DOI

      10.1017/S1743921318008633

    • Int'l Joint Research
  • [Journal Article] The Detection of Dust Gap-ring Structure in the Outer Region of the CR Cha Protoplanetary Disk2020

    • Author(s)
      Kim Seongjoong、Takahashi Sanemichi、Nomura Hideko、Tsukagoshi Takashi、Lee Seokho、Muto Takayuki、Dong Ruobing、Hasegawa Yasuhiro、Hashimoto Jun、Kanagawa Kazuhiro、Kataoka Akimasa、Konishi Mihoko、Liu Hauyu Baobab、Momose Munetake、Sitko Michael、Tomida Kengo
    • Journal Title

      The Astrophysical Journal

      Volume: 888 Pages: 72~72

    • DOI

      10.3847/1538-4357/ab5d2b

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Highly porous nature of a primitive asteroid revealed by thermal imaging2020

    • Author(s)
      Okada Tatsuaki, Fukuhara Tetsuya, Tanaka Satoshi, Taguchi Makoto, Arai Takehiko, Senshu Hiroki, Sakatani Naoya, Shimaki Yuri, Demura Hirohide, Ogawa Yoshiko, Suko Kentaro, Sekiguchi Tomohiko, Kouyama Toru, Takita Jun, Matsunaga Tsuneo, Imamura Takeshi, Wada Takehiko,…, Yabuta Hikaru, … et al.
    • Journal Title

      Nature

      Volume: 579 Pages: 518~522

    • DOI

      10.1038/s41586-020-2102-6

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 原始惑星系円盤の有機分子と硫黄系分子:モデルとALMA 観測2020

    • Author(s)
      野村英子,樋口あや,坂井南美,山本智,長沢真樹子,田中今日子,三浦均,中本泰史,田中秀和,山本哲生,Catherine Walsh,Tom J. Millar
    • Journal Title

      低温科学

      Volume: 78 Pages: 165-172

    • DOI

      10.14943/lowtemsci.78.165

    • Peer Reviewed / Open Access
  • [Journal Article] ALMA Observations of Layered Structures due to CO Selective Dissociation in the ρ Ophiuchi A Plane-parallel PDR2019

    • Author(s)
      Yamagishi M.、Hara C.、Kawabe R.、Nakamura F.、Kamazaki T.、Takekoshi T.、Shimajiri Y.、Nomura H.、Takakuwa S.、Francesco J. Di
    • Journal Title

      The Astrophysical Journal

      Volume: 875 Pages: 62

    • DOI

      10.3847/1538-4357/ab0d80

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dust Continuum Emission and the Upper Limit Fluxes of Submillimeter Water Lines of the Protoplanetary Disk around HD 163296 Observed by ALMA2019

    • Author(s)
      Notsu Shota、Akiyama Eiji、Booth Alice、Nomura Hideko、Walsh Catherine、Hirota Tomoya、Honda Mitsuhiko、Tsukagoshi Takashi、Millar T. J.
    • Journal Title

      The Astrophysical Journal

      Volume: 875 Pages: 96

    • DOI

      10.3847/1538-4357/ab0ae9

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Discovery of An au-scale Excess in Millimeter Emission from the Protoplanetary Disk around TW Hya2019

    • Author(s)
      Tsukagoshi Takashi、Muto Takayuki、Nomura Hideko、Kawabe Ryohei、Kanagawa Kazuhiro D.、Okuzumi Satoshi、Ida Shigeru、Walsh Catherine、Millar Tom J.、Takahashi Sanemichi Z.、Hashimoto Jun、Uyama Taichi、Tamura Motohide
    • Journal Title

      The Astrophysical Journal

      Volume: 878 Pages: L8

    • DOI

      10.3847/2041-8213/ab224c

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The First Detection of 13C17O in a Protoplanetary Disk: A Robust Tracer of Disk Gas Mass2019

    • Author(s)
      Booth Alice S.、Walsh Catherine、Ilee John D.、Notsu Shota、Qi Chunhua、Nomura Hideko、Akiyama Eiji
    • Journal Title

      The Astrophysical Journal

      Volume: 882 Pages: L31

    • DOI

      10.3847/2041-8213/ab3645

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes2019

    • Author(s)
      Sugita S., Honda R., Morota T., Kameda S., Sawada H., Tatsumi E., Yamada M., Honda C., Yokota Y., Kouyama T., Sakatani N., Ogawa K., Suzuki H., Okada T., Namiki N., Tanaka S., Iijima Y., Yoshioka K., Hayakawa M., Cho Y., Matsuoka M., Hirata N., Hirata N., Miyamoto H., …, Yabuta H., … et al.
    • Journal Title

      Science

      Volume: 364 Pages: 252-252

    • DOI

      10.1126/science.aaw0422

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu?A spinning top?shaped rubble pile2019

    • Author(s)
      Watanabe S., Hirabayashi M., Hirata N., Hirata N., Noguchi R., Shimaki Y., Ikeda H., Tatsumi E., Yoshikawa M., Kikuchi S., Yabuta H., Nakamura T., Tachibana S., Ishihara Y., Morota T., Kitazato K., Sakatani N., Matsumoto K., Wada K., Senshu H., Honda C., Michikami T., Takeuchi H., Kouyama T., Honda R. et al.
    • Journal Title

      Science

      Volume: 364 Pages: 268-272

    • DOI

      10.1126/science.aav8032

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Shock Vaporization/Devolatilization of Evaporitic Minerals, Halite and Gypsum, in an Open System Investigated by a Two‐Stage Light Gas Gun2019

    • Author(s)
      Kurosawa Kosuke、Moriwaki Ryota、Komatsu Goro、Okamoto Takaya、Sakuma Hiroshi、Yabuta Hikaru、Matsui Takafumi
    • Journal Title

      Geophysical Research Letters

      Volume: 46 Pages: 7258~7267

    • DOI

      10.1029/2019GL083249

    • Int'l Joint Research
  • [Journal Article] Images from the surface of asteroid Ryugu show rocks similar to carbonaceous chondrite meteorites2019

    • Author(s)
      Jaumann R., Schmitz N., Ho T.-M., Schrider S. E., Otto K. A., Stephan K., Elgner S., Krohn K., Preusker F., Scholten F., Biele J., Ulamec S., Krause C., Sugita S., Matz K.-D., Roatsch T., Parekh R., Mottola S., Grott M., Michel P., ..., Yabuta H., ... et al.
    • Journal Title

      Science

      Volume: 365 Pages: 817~820

    • DOI

      10.1126/science.aaw8627

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 惑星形成領域からの様々なガス輝線のALMA観測2019

    • Author(s)
      野村 英子
    • Journal Title

      日本惑星科学会誌遊星人

      Volume: 28 Pages: 200~206

    • DOI

      10.14909/yuseijin.28.3_200

    • Peer Reviewed / Open Access
  • [Presentation] SPICA Observations of Complex Organic Molecules in Protoplanetary Disks2019

    • Author(s)
      野村英子, Chen-En Wei, Catherine Walsh, T.J. Millar
    • Organizer
      SPICA 2019
    • Int'l Joint Research
  • [Presentation] Carbon grain destruction in protoplanetary disks: implication for the origin of the solar system2019

    • Author(s)
      Chen-En Wei, 野村英子, Wing-Huen Ip, Jeong-Eun Lee, Catherine Walsh, T.J. Millar
    • Organizer
      Origins of Solar Systems
    • Int'l Joint Research
  • [Presentation] Modelling Infrared Line Spectra of Complex Organic Molecules in Protoplanetary Disks2019

    • Author(s)
      野村英子, Chen-En Wei, Catherine Walsh, T.J. Millar
    • Organizer
      Extreme Solar Systems IV 2019
    • Int'l Joint Research
  • [Presentation] MIR Observations of Water and Organic Molecules in Protoplanetary Disks2019

    • Author(s)
      野村英子
    • Organizer
      MIR Astronomy - Past 20 years and Future 20 years
    • Int'l Joint Research / Invited
  • [Presentation] Modelling Infrared Line Spectra of Complex Organic Molecules in Protoplanetary Disks2019

    • Author(s)
      野村英子, Chen-En Wei, Catherine Walsh, T.J. Millar
    • Organizer
      日本天文学会秋季年会
  • [Presentation] Modelling Infrared Line Spectra of Complex Organic Molecules in Protoplanetary Disks2019

    • Author(s)
      野村英子, Chen-En Wei, Catherine Walsh, T.J. Millar
    • Organizer
      From Protoplanetary Disks through Planetary System Architecture to Planetary Atmospheres and Habitability
    • Int'l Joint Research
  • [Presentation] Comparing the complex organic molecules in protoplanetary disks with comet 67P/C-G2019

    • Author(s)
      Chen-En Wei, 野村英子, Catherine Walsh, Patrice Teule
    • Organizer
      From Protoplanetary Disks through Planetary System Architecture to Planetary Atmospheres and Habitability
    • Int'l Joint Research
  • [Presentation] Modelling Infrared Line Spectra of Complex Organic Molecules in Protoplanetary Disks2019

    • Author(s)
      野村英子, Chen-En Wei, Catherine Walsh, T.J. Millar
    • Organizer
      Planet Formation Workshop 2019
    • Int'l Joint Research
  • [Presentation] Comparing the complex organic molecules in protoplanetary disks with comet 67P/C-G2019

    • Author(s)
      Chen-En Wei, 野村英子, Catherine Walsh, Patrice Teule
    • Organizer
      Planet Formation Workshop 2019
    • Int'l Joint Research
  • [Presentation] Relationship between visible reflectance at 550 nm and carbon contents in carbonaceous chondrites: Attempt to estimate the bulk carbon contents of asteroid Ryugu’s surface.2019

    • Author(s)
      Yabuta H., Ikehara M., Tatsumi E., Sugita S., Yamashita S., Mogi K., Amano K., Matsuoka M., Kobayashi S. and Nakamura T.
    • Organizer
      The 82nd annual meeting of the Meteoritical Society
    • Int'l Joint Research
  • [Presentation] Chemical History of Organic Macromolecules in the Early Solar System: Scientific Strategy and Expected Insights from Asteroid Ryugu2019

    • Author(s)
      Yabuta H. and Organic macromolecules initial analysis sub-team
    • Organizer
      Asteroid Science 2019
    • Int'l Joint Research
  • [Presentation] Prospects for future analyses of the returned asteroid samples in light of the observation results obtained by Hayabusa2 and OSIRIS-REx missions2019

    • Author(s)
      Yabuta H., Tachibana S., Abe M., Yoshikawa M., Watanabe S., Tsuda Y. and Hayabusa2 Science Team
    • Organizer
      AGU Fall meeting
    • Int'l Joint Research / Invited
  • [Presentation] Polycyclic aromatic hydrocarbons and aliphatic hydrocarbons in Jbilet Winselwan carbonaceous CM chondrite, a possible analog of asteroid Ryugu’s surface2019

    • Author(s)
      Kato H. and Yabuta H.
    • Organizer
      The 82nd annual meeting of the Meteoritical Society
    • Int'l Joint Research

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Published: 2021-01-27   Modified: 2022-08-19  

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