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Herschel and Planck Observations of Filamentary Molecular Clouds and Theory of Star Formation

Research Project

Project/Area Number 16F16024
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Research Field Astronomy
Research InstitutionNagoya University

Principal Investigator

犬塚 修一郎  名古屋大学, 理学研究科, 教授 (80270453)

Co-Investigator(Kenkyū-buntansha) ARZOUMANIAN DORIS  名古屋大学, 理学研究科, 外国人特別研究員
Project Period (FY) 2016-10-07 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2018: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 2017: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2016: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywords分子雲 / フィラメント状構造 / 星形成 / 星間磁場 / 分子雲コア / 角運動量 / 星間媒質 / フィラメント / 偏光 / 磁気流体力学 / 電波天文学
Outline of Annual Research Achievements

現在の星形成研究において「なぜ,フィラメント状分子雲の幅が約0.1pc になるのか?」という問題に脚光が集まっているが,それに対する満足のいく解答はまだ無い.磁場の効果を考慮しない研究ではこれに反する答えが出るため,磁場の効果の重要性を多くの理論研究者が認識している.本研究員は,「磁場を含む分子雲の中でどのようにしてフィラメント状分子雲が形成されるのか?」という問題に理論・観測の両面から取り組み,フィラメントの幅を決める物理を研究した.特に大きな線密度のフィラメントの内部で磁場が乱れた乱流状態にあるかどうかを見極める.0.1pcの幅のフィラメントの成因を理解することで,星形成の開始条件を解明し,銀河円盤部における星形成過程の一般論を構築することを目指した.
具体的な成果として,フィラメント状分子雲周辺の磁場構造を観測するプロジェクトに参画し,実際にハワイJCMTサブミリ波望遠鏡を用いて観測を進めた.この内容については,解析を進める予定であり,論文化を目指している.また,自身がプロポーザルを提案して受理された野辺山45m鏡を用いた観測結果についての解析をまとめ,論文として発表した.また,フィラメント状分子雲の分裂過程を統計的に記述する手法についても発展させ,分裂して生まれた分子雲コアの角運動量の分布がどのようになるかという点も共同研究を行った.
また,この研究テーマに関連する研究について国際会議を開催した.これは名古屋大学にて開催したもので,参加者は約百名であり,海外からの参加者の方が日本人を上回る規模であった.この会議において,これまでの世界的研究をまとめ,今後の研究の方向性について議論を行った.

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (27 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (5 results) Journal Article (15 results) (of which Int'l Joint Research: 13 results,  Peer Reviewed: 13 results,  Open Access: 4 results,  Acknowledgement Compliant: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 4 results) Remarks (1 results)

  • [Int'l Joint Research] CEA, Saclay(フランス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] ランカシャー中央大学(英国)

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

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] CEA-Saclay(フランス)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] CEA-Saclay(フランス)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Characterizing the properties of nearby molecular filaments observed with Herschel2019

    • Author(s)
      Arzoumanian D.、Andre Ph.、Koenyves V.、Palmeirim P.、Roy A.、Schneider N.、Benedettini M.、Didelon P.、Di Francesco J.、Kirk J.、Ladjelate B.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 621 Pages: A42-A42

    • DOI

      10.1051/0004-6361/201832725

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Probing accretion of ambient cloud material into the Taurus B211/B213 filament2019

    • Author(s)
      Shimajiri Y.、Andre Ph.、Palmeirim P.、Arzoumanian D.、Bracco A.、Koenyves V.、Ntormousi E.、Ladjelate B.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 623 Pages: A16-A16

    • DOI

      10.1051/0004-6361/201834399

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] JCMT BISTRO Survey: Magnetic Fields within the Hub-filament Structure in IC 51462019

    • Author(s)
      Wang Jia-Wei、Lai Shih-Ping、Eswaraiah Chakali et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 876 Issue: 1 Pages: 42-42

    • DOI

      10.3847/1538-4357/ab13a2

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Molecular filament formation and filament-cloud interaction: Hints from Nobeyama 45 m telescope observations2018

    • Author(s)
      Arzoumanian, Doris; Shimajiri, Yoshito; Inutsuka, Shu-ichiro; Inoue, Tsuyoshi; Tachihara, Kengo
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Issue: 5

    • DOI

      10.1093/pasj/psy095

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Magnetic Fields toward Ophiuchus-B Derived from SCUBA-2 Polarization Measurements2018

    • Author(s)
      Soam, Archana; Pattle, Kate; Ward-Thompson, Derek; Lee, Chang Won; Sadavoy, Sarah; Koch, Patrick M.; Kim, Gwanjeong; Kwon, Jungmi; Kwon, Woojin; Arzoumanian, Doris; Berry, David; Hoang, Thiem; Tamura, Motohide; Lee, Sang-Sung; Liu, Tie; Tsukamoto, Yusuke et.al
    • Journal Title

      The Astrophysical Journal

      Volume: 861 Issue: 1 Pages: 65-78

    • DOI

      10.3847/1538-4357/aac4a6

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A First Look at BISTRO Observations of the ρ Oph-A core2018

    • Author(s)
      Kwon, Jungmi; Doi, Yasuo; Tamura, Motohide; Matsumura, Masafumi; Pattle, Kate; Berry, David; Sadavoy, Sarah; Matthews, Brenda C.; Ward-Thompson, Derek; Hasegawa, Tetsuo; Furuya, Ray S.; Pon, Andy; Di Francesco, James; Arzoumanian, Doris; Tsukamoto, Yusuke et.al
    • Journal Title

      The Astrophysical Journal

      Volume: 859 Issue: 1 Pages: 4-26

    • DOI

      10.3847/1538-4357/aabd82

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The dense cores and filamentary structure of the molecular cloud in Corona Australis: Herschel SPIRE and PACS observations from the Herschel Gould Belt Survey2018

    • Author(s)
      Bresnahan D.、Ward-Thompson D.、Kirk J. M.、Pattle K.、Eyres S.、White G. J.、Koenyves V.、Men’shchikov A.、Andre Ph.、Schneider N.、Di Francesco J.、Arzoumanian D.、Benedettini M.、Ladjelate B.、Palmeirim P.、Bracco A.、Molinari S.、Pezzuto S.、Spinoglio L.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 615 Pages: A125-A125

    • DOI

      10.1051/0004-6361/201730515

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A catalogue of dense cores and young stellar objects in the Lupus complex based on Herschel Gould Belt Survey observations2018

    • Author(s)
      Benedettini M.、Pezzuto S.、Schisano E.、Andre P.、Koenyves V.、Men’shchikov A.、Ladjelate B.、Di Francesco J.、Elia D.、Arzoumanian D.、Louvet F.、Palmeirim P.、Rygl K. L. J.、Schneider N.、Spinoglio L.、Ward-Thompson D.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 619 Pages: A52-A52

    • DOI

      10.1051/0004-6361/201833364

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The earliest phases of high-mass star formation, as seen in NGC 6334 by Herschel-HOBYS2017

    • Author(s)
      Tige J.、Motte F.、Russeil D. et al. (Arzoumanian, D:17番目)
    • Journal Title

      Astronomy & Astrophysics

      Volume: 602 Pages: A77-A77

    • DOI

      10.1051/0004-6361/201628989

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Observed properties of a filament system in the Orion B molecular cloud2017

    • Author(s)
      D. Arzoumanian, Y. Shimajiri, A. Roy, Ph. André, V. Könyves and A. Bracco
    • Journal Title

      Memorie della Societa Astronomica Italiana

      Volume: 88 Pages: 720-721

    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] Molecular filaments and the origin of the IMF2017

    • Author(s)
      Ph., André, V. Könyves, D. Arzoumanian and A. Roy
    • Journal Title

      Memorie della Societa Astronomica Italiana

      Volume: 88 Pages: 521-523

    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] The earliest phases of high-mass star formation, as seen in NGC 6334 by Herschel 掲載確定2017

    • Author(s)
      Tige, J.,.., Doris Arzoumanian et al.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 印刷中

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Evolutionary Description of Giant Molecular Cloud Mass Functions on Galactic Disks2017

    • Author(s)
      小林将人
    • Journal Title

      The Astrophysical Journal

      Volume: 836 Issue: 2 Pages: 175-190

    • DOI

      10.3847/1538-4357/836/2/175

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap2016

    • Author(s)
      N. Aghanim, M.I.R.Alves, D. Arzoumanian, et al.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 596 Pages: A105-A105

    • DOI

      10.1051/0004-6361/201628636

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Formation of HI Clouds in Shock-compressed Interstellar Medium: Physical Origin of Angular Correlation between Filamentary Structure and Magnetic Field2016

    • Author(s)
      T. Inoue & S. Inutsuka
    • Journal Title

      The Astrophysical Journal

      Volume: 833 Issue: 1 Pages: 10-20

    • DOI

      10.3847/0004-637x/833/1/10

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Presentation] Observed properties of interstellar filaments in nearby clouds2017

    • Author(s)
      Doris Arzoumanian
    • Organizer
      IAU-Asia Pacific Regional Meeting 2017, Taiwan
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observed properties of interstellar filaments2017

    • Author(s)
      Doris Arzoumanian
    • Organizer
      NRO45m/ASTE Single Dish Science Workshop, Nobeyama
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Observed properties of interstellar filaments2017

    • Author(s)
      Doris Arzoumanian
    • Organizer
      日本天文学会2017年度秋季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Understanding the role of magnetic fields in the formation and evolution of interstellar filaments: Promises from SPICA/SAFARI-POL dust polarization observations2017

    • Author(s)
      Doris Arzoumanian
    • Organizer
      SPICA workshop, ISAS/JAXA
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Understanding the observed properties of interstellar filaments: Insights on the initial conditions of star formation2017

    • Author(s)
      Doris Arzoumanian
    • Organizer
      Star formation workshop, Kagoshima
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Observations of Filamentary Molecular Clouds2017

    • Author(s)
      Doris Arzoumanian
    • Organizer
      The 119th Seminar on the Formation of Stars & Planets
    • Place of Presentation
      Kyushu University
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Remarks] Shu-ichiro Inutsuka - Publication Lists

    • URL

      http://www.ta.phys.nagoya-u.ac.jp/inutsuka/Papers/

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report

URL: 

Published: 2016-10-11   Modified: 2024-03-26  

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