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Exploring Disk Formation and Chemical Diversity There by Survey Observation

Research Project

Project/Area Number 16H03964
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Astronomy
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Sakai Nami  国立研究開発法人理化学研究所, 開拓研究本部, 主任研究員 (70533553)

Co-Investigator(Kenkyū-buntansha) 山本 智  東京大学, 大学院理学系研究科(理学部), 教授 (80182624)
Research Collaborator Higuchi Aya E.  
Imai Muneaki  
Yichen Zhang  
Oya Yoko  
Soma Tatsuya  
Yoshida Kento  
Lopez-Sepulcre Ana  
Ceccarelli Cecilia  
Francesco Fontani  
Codella Claudio  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2018: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2017: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2016: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Keywords星間化学 / 星形成 / 惑星系形成 / 化学組成 / 有機分子 / 電波観測 / 分子 / 電波天文学 / 原始惑星系円盤 / 星間物質 / 原始星
Outline of Final Research Achievements

We have succeeded statistical study of chemical diversity among various protostellar envelopes located in the same region, Perseus molecular cloud complex. Diversity and its possible origins are shown especially for saturated and unsaturated organic species. We have also revealed that deuterium fractionation ratio reflect protostellar evolutionary stage rather than the chemical diversity. These statistical studies are also carried out by ALMA with the resolution of about 100 au, which enabled us to know chemical diversity in disk forming regions.

Academic Significance and Societal Importance of the Research Achievements

これまで、同じような進化段階にある原始星の周囲のガスの化学組成は、特殊な場合を除き同様であるべきと考えられてきた。しかし、たとえ母体となる分子雲が同じでも、化学組成の多様性が存在し得ることが示された。これは、私たちの太陽系の化学的起源と宇宙の中での存在価値を知るうえで極めて重要な成果である。物理的には同じような惑星系でも、その形成初期の化学組成が惑星系によって大きく異なる可能性を明瞭に示したからである。一方、多様性の軸は1つではなく様々である可能性も明らかとなった。今後、具体的にどのような多様性が存在し得るのか、あるいはそれらがどのように惑星系に残されていくのかを調べることの重要性が示された。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (43 results)

All 2019 2018 2017 Other

All Int'l Joint Research (8 results) Journal Article (18 results) (of which Int'l Joint Research: 15 results,  Peer Reviewed: 18 results,  Open Access: 6 results) Presentation (17 results) (of which Int'l Joint Research: 9 results,  Invited: 11 results)

  • [Int'l Joint Research] IPAG/CNRS(フランス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] INAF(イタリア)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] ASIAA(その他の国・地域)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] MPE(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Liden University(オランダ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] グルノーブル-アルプス大学(フランス)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] INAFアルチェトリ天文台(イタリア)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] グルノーブル-アルプス大学(フランス)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Molecular-cloud-scale Chemical Composition. III. Constraints of Average Physical Properties through Chemical Models2019

    • Author(s)
      Harada Nanase、Nishimura Yuri、Watanabe Yoshimasa、Yamamoto Satoshi、Aikawa Yuri、Sakai Nami、Shimonishi Takashi
    • Journal Title

      The Astrophysical Journal

      Volume: 871 Issue: 2 Pages: 238-238

    • DOI

      10.3847/1538-4357/aaf72a

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] An unbiased spectral line survey observation toward the low-mass star-forming region L15272019

    • Author(s)
      Yoshida Kento、Sakai Nami、Nishimura Yuri、Tokudome Tomoya、Watanabe Yoshimasa、Sakai Takeshi、Takano Shuro、Yamamoto Satoshi
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 未定 Issue: Supplement_1

    • DOI

      10.1093/pasj/psy136

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Deuterium Fractionation Survey Toward Protostellar Sources in the Perseus Molecular Cloud: HNC Case2018

    • Author(s)
      Imai Muneaki、Sakai Nami、Lopez-Sepulcre Ana、Higuchi Aya E.、Zhang Yichen、Oya Yoko、Watanabe Yoshimasa、Sakai Takeshi、Ceccarelli Cecilia、Lefloch Bertrand、Yamamoto Satoshi
    • Journal Title

      The Astrophysical Journal

      Volume: 869 Issue: 1 Pages: 51-51

    • DOI

      10.3847/1538-4357/aaeb21

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Rotation in the NGC 1333 IRAS 4C Outflow2018

    • Author(s)
      Zhang Yichen、Higuchi Aya E.、Sakai Nami、Oya Yoko、Lopez-Sepulcre Ana、Imai Muneaki、Sakai Takeshi、Watanabe Yoshimasa、Ceccarelli Cecilia、Lefloch Bertrand、Yamamoto Satoshi
    • Journal Title

      The Astrophysical Journal

      Volume: 864 Issue: 1 Pages: 76-76

    • DOI

      10.3847/1538-4357/aad7ba

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Multiline Study of a High-mass Young Stellar Object in the Small Magellanic Cloud with ALMA: The Detection of Methanol Gas at 0.2 Solar Metallicity2018

    • Author(s)
      Shimonishi Takashi、Watanabe Yoshimasa、Nishimura Yuri、Aikawa Yuri、Yamamoto Satoshi、Onaka Takashi、Sakai Nami、Kawamura Akiko
    • Journal Title

      The Astrophysical Journal

      Volume: 862 Issue: 2 Pages: 102-102

    • DOI

      10.3847/1538-4357/aacd0c

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chemical Survey toward Young Stellar Objects in the Perseus Molecular Cloud Complex2018

    • Author(s)
      Higuchi Aya E.、Sakai Nami、Watanabe Yoshimasa、L?pez-Sepulcre Ana、Yoshida Kento、Oya Yoko、Imai Muneaki、Zhang Yichen、Ceccarelli Cecilia、Lefloch Bertrand、Codella Claudio、Bachiller Rafael、Hirota Tomoya、Sakai Takeshi、Yamamoto Satoshi
    • Journal Title

      The Astrophysical Journal Supplement Series

      Volume: 236 Issue: 2 Pages: 52-52

    • DOI

      10.3847/1538-4365/aabfe9

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Chemistry of a newly detected circumbinary disk in Ophiuchus2018

    • Author(s)
      Artur de la Villarmois Elizabeth、Kristensen Lars E.、Jorgensen Jes K.、Bergin Edwin A.、Brinch Christian、Frimann Soren、Harsono Daniel、Sakai Nami、Yamamoto Satoshi
    • Journal Title

      Astronomy & Astrophysics

      Volume: 614 Pages: A26-A26

    • DOI

      10.1051/0004-6361/201731603

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] ALMA Observations of the IRDC Clump G34.43+00.24 MM3: Complex Organic and Deuterated Molecules2018

    • Author(s)
      Sakai Takeshi、Yanagida Takahiro、Furuya Kenji、Aikawa Yuri、Sanhueza Patricio、Sakai Nami、Hirota Tomoya、Jackson James M.、Yamamoto Satoshi
    • Journal Title

      The Astrophysical Journal

      Volume: 857 Issue: 1 Pages: 35-35

    • DOI

      10.3847/1538-4357/aaadfd

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Astrochemical evolution along star formation: overview of the IRAM Large Program ASAI2018

    • Author(s)
      Lefloch Bertrand、Bachiller R、Ceccarelli C、Cernicharo J、Codella C、Fuente A、Kahane C、Lopez-Sepulcre A、Tafalla M、Vastel C、Caux E、Gonzalez-Garcia M、Bianchi E、Gomez-Ruiz A、Holdship J、Mendoza E、Ospina-Zamudio J、Podio L、Quenard D、Roueff E、Sakai N、Viti S、Yamamoto S、Yoshida K、et al.
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 477 Issue: 4 Pages: 4792-4809

    • DOI

      10.1093/mnras/sty937

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Complex Organic Molecules in Taurus Molecular Cloud-12018

    • Author(s)
      Soma Tatsuya
    • Journal Title

      The Astrophysical Journal

      Volume: 854 Issue: 2 Pages: 116-116

    • DOI

      10.3847/1538-4357/aaa70c

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Seeds of Life in Space (SOLIS). III. Zooming Into the Methanol Peak of the Prestellar Core L15442018

    • Author(s)
      Punanova Anna、Caselli Paola、Feng Siyi、Sakai N.(40/44番目)、他
    • Journal Title

      The Astrophysical Journal

      Volume: 855 Issue: 2 Pages: 112-112

    • DOI

      10.3847/1538-4357/aaad09

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Chemical and Physical Picture of IRAS 16293--2422 Source B at a Sub-arcsecond Scale Studied with ALMA2018

    • Author(s)
      Oya Yoko
    • Journal Title

      The Astrophysical Journal

      Volume: 854 Issue: 2 Pages: 96-96

    • DOI

      10.3847/1538-4357/aaa6c7

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Chemical Survey toward Young Stellar Objects in the Perseus Molecular Cloud Complex2018

    • Author(s)
      Aya E. Higuchi, Nami Sakai, Yoshimasa Watanabe, Ana Lopez-Sepulcre, Kento Yoshida, Yoko Oya, Muneaki Imai, Yichen Zhang, Cecilia Ceccarelli, Bertrand Lefloch, Claudio Codella, Rafael Bachiller, Tomoya Hirota, Takeshi Sakai, and Satoshi Yamamoto
    • Journal Title

      The Astrophysical Journal Supplement Series

      Volume: 印刷中

    • NAID

      120007134005

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Long Carbon Chains in the Warm Carbon-chain-chemistry Source L1527: First Detection of C7H in Molecular Clouds2017

    • Author(s)
      Araki Mitsunori、Takano Shuro、Sakai Nami、Yamamoto Satoshi、Oyama Takahiro、Kuze Nobuhiko、Tsukiyama Koichi
    • Journal Title

      Astrophysical Journal

      Volume: 847 Issue: 1 Pages: 51-51

    • DOI

      10.3847/1538-4357/aa8637

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Complex organics in IRAS?4A revisited with ALMA and PdBI: Striking contrast between two neighbouring protostellar cores2017

    • Author(s)
      Lopez-Sepulcre A.、Sakai N.、Neri R.、Imai M.、Oya Y.、Ceccarelli C.、Higuchi A. E.、Aikawa Y.、Bottinelli S.、Caux E.、Hirota T.、Kahane C.、Lefloch B.、Vastel C.、Watanabe Y.、Yamamoto S.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 606 Pages: A121-A121

    • DOI

      10.1051/0004-6361/201630334

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Seeds of Life in Space (SOLIS)2017

    • Author(s)
      Fontani F.、Ceccarelli C.、Favre C.、Sakai N.(32/42番目)、他
    • Journal Title

      Astronomy & Astrophysics

      Volume: 605 Pages: A57-A57

    • DOI

      10.1051/0004-6361/201730527

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Seeds of Life in Space (SOLIS)2017

    • Author(s)
      Codella C.、Ceccarelli C.、Caselli P.、Sakai N.(41/50番目)、他
    • Journal Title

      Astronomy & Astrophysics

      Volume: 605 Pages: L3-L3

    • DOI

      10.1051/0004-6361/201731249

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Seeds Of Life In Space (SOLIS): The Organic Composition Diversity at 300?1000 au Scale in Solar-type Star-forming Regions2017

    • Author(s)
      Ceccarelli C.、Caselli P.、Fontani F.、akai N.(37/47番目)、他
    • Journal Title

      The Astrophysical Journal

      Volume: 850 Issue: 2 Pages: 176-176

    • DOI

      10.3847/1538-4357/aa961d

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Protostellar Disks -Observational approach-2018

    • Author(s)
      Nami Sakai
    • Organizer
      Early Phase of Star Formation (EPOS)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Physics and Chemistry of Disk Formation -Observational approach-2018

    • Author(s)
      Nami Sakai
    • Organizer
      Astrochemistry -Past, Present, Future-
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Chemistry during Star and Planet Formation --Chemical diversity and its origin--2018

    • Author(s)
      Nami Sakai
    • Organizer
      NOEMA/30m Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 化学の眼で見る星形成 --物理・化学・天文学の融合--2018

    • Author(s)
      坂井南美
    • Organizer
      日本学術会議公開シンポジウム「新たな発見をもたらす科学における計測と予知・予測」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 同位体比率で探る分子生成過程2018

    • Author(s)
      坂井南美
    • Organizer
      宇宙電波懇談会シンポジウム
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 星形成領域L1527におけるH2COの重水素化物のALMA観測2018

    • Author(s)
      吉田健人
    • Organizer
      日本天文学会 春季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Protostellar Outflows in the Perseus Molecular Clouds2018

    • Author(s)
      Yichen Zhang、坂井南美
    • Organizer
      日本天文学会 春季年会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Chemical Diversity in Protostellar Disks and Its Future2017

    • Author(s)
      Nami Sakai
    • Organizer
      he Gordon Conference (GRC) on the Origins of Solar Systems:Making a Habitable Planet
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Disk Properties in a Class 0 Protostar2017

    • Author(s)
      Nami Sakai
    • Organizer
      Workshop on gaseous debris disks
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Disk Formation: Observational Challenge2017

    • Author(s)
      Nami Sakai
    • Organizer
      ALMA Long baseline Workshop
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Disk Structure around the Class 0 Protostar in L15272017

    • Author(s)
      坂井南美
    • Organizer
      日本天文学会 秋季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Unbiased Chemical Survey of Protostellar Sources in Perseus2017

    • Author(s)
      樋口あや
    • Organizer
      ALMA workshop: Star formation with ALMA: Evolution from dense cores to protostars
    • Related Report
      2017 Annual Research Report
  • [Presentation] Tracing chemistry toward protoplanetary disks by ALMA2017

    • Author(s)
      Nami Sakai
    • Organizer
      The XXIV International Symposium on Free Radicals (ISFR2017)
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Protoplanetary disk formation and evolution: setting the stage for planet formation2017

    • Author(s)
      Nami Sakai
    • Organizer
      Barriers (centrifugal) in disk formation and chemical signatures
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Observation Overview:Pre- and Protostellar Cores2017

    • Author(s)
      Nami Sakai
    • Organizer
      ESO Star Formation conference: Star Formation from Cores to Clusters
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 化学で探る円盤形成2017

    • Author(s)
      坂井南美
    • Organizer
      地球惑星連合大会、アルマによる惑星科学の新展開セッション
    • Related Report
      2016 Annual Research Report
  • [Presentation] Unbiased Chemical Survey of Protostellar Sources in Perseus III2017

    • Author(s)
      樋口あや, 坂井南美
    • Organizer
      日本天文学会 秋季年会
    • Related Report
      2016 Annual Research Report

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Published: 2016-04-21   Modified: 2020-03-30  

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