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A Thorough Understanding of Role of Magnetic Field in Star Formation Process by CCS/SO Zeeman Observations

Research Project

Project/Area Number 17H01118
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Astronomy
Research InstitutionNational Astronomical Observatory of Japan

Principal Investigator

Nakamura Fumitaka  国立天文台, 科学研究部, 准教授 (20291354)

Co-Investigator(Kenkyū-buntansha) 小川 英夫  大阪府立大学, 理学(系)研究科(研究院), 客員教授 (20022717)
土橋 一仁  東京学芸大学, 教育学部, 教授 (20237176)
亀野 誠二  国立天文台, チリ観測所, 教授 (20270449)
杉谷 光司  名古屋市立大学, 大学院理学研究科, 教授 (80192615)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥39,650,000 (Direct Cost: ¥30,500,000、Indirect Cost: ¥9,150,000)
Fiscal Year 2019: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2018: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Fiscal Year 2017: ¥21,060,000 (Direct Cost: ¥16,200,000、Indirect Cost: ¥4,860,000)
Keywords星間磁場 / 星形成 / 電波観測 / 磁場 / 電波受信機 / 分子雲 / 高密度コア / 偏波 / 分子雲コア / 電波天文学 / ゼーマン効果 / 直線偏波
Outline of Final Research Achievements

The purpose of this research is to develop a new radio receiver in the 30-50GHz band, and mount it on the Nobeyama 45m radio telescope. In addition, we use it to detect the Zeeman splitting of CCS (JN=43-32, 32-21) and SO (JN = 10-01) lines.
If Zeeman splitting can be detected, the magnetic field strengths in the star-forming regions can be measured.
The receiver was developed in collaboration with the ASIAA, and the receiver itself was completed. Although the installation was significantly delayed due to the influence of covid-19, it was successfully installed and integrated into the telescope system.

Academic Significance and Societal Importance of the Research Achievements

本研究により、星の形成過程における磁場の役割を解明することで、我々の太陽系のような星系がどのように誕生したかの知見が得られる。また、系外惑星の形成過程の初期条件への制限を行うことができ、生命の誕生のなぞに迫ることができると期待される。さらに、30-50GHzの電波観測を行う装置を作ったので、今後、この新たな電波観測から、星の誕生過程以外にも様々な天体現象の解明に役立つことが期待される。

Report

(4 results)
  • 2021 Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (18 results)

All 2022 2019 2018 2017 Other

All Int'l Joint Research (3 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 3 results) Funded Workshop (2 results)

  • [Int'l Joint Research] 台湾/中央研究院(その他の国・地域)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] 台湾中央研究院(台湾)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] 台湾中央研究院(台湾)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Spectral Tomography for the Line-of-sight Structures of the Taurus Molecular Cloud 12018

    • Author(s)
      Dobashi Kazuhito、Shimoikura Tomomi、Nakamura Fumitaka、Kameno Seiji、Mizuno Izumi、Taniguchi Kotomi
    • Journal Title

      The Astrophysical Journal

      Volume: 864 Issue: 1 Pages: 82-82

    • DOI

      10.3847/1538-4357/aad62f

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Statistical Study of Massive Cluster-forming Clumps2018

    • Author(s)
      Shimoikura Tomomi、Dobashi Kazuhito、Nakamura Fumitaka、Matsumoto Tomoaki、Hirota Tomoya
    • Journal Title

      The Astrophysical Journal

      Volume: 855 Issue: 1 Pages: 45-45

    • DOI

      10.3847/1538-4357/aaaccd

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Giant molecular cloud collisions as triggers of star formation. VI. Collision-induced turbulence2018

    • Author(s)
      Wu, Benjamin; Tan, Jonathan C.; Nakamura, Fumitaka; Christie, Duncan; Li, Qi
    • Journal Title

      Publ. Astron. Soc. of Japan

      Volume: 70 Issue: SP2 Pages: 1-12

    • DOI

      10.1093/pasj/psx140

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] GMC Collisions as Triggers of Star Formation. III. Density and Magnetically Regulated Star Formation2017

    • Author(s)
      Wu, Benjamin; Tan, Jonathan C.; Christie, Duncan; Nakamura, Fumitaka; Van Loo, Sven; Collins, David
    • Journal Title

      The Astrosical Journal

      Volume: 841 Issue: 2 Pages: 1-18

    • DOI

      10.3847/1538-4357/aa6ffa

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 野辺山45m鏡に搭載されたeQ受信機計画の概要と現状2022

    • Author(s)
      中村文隆、Chau-Ching Chiong、西村淳、Ross Burns、谷口琴美、川邊 良平、藤井泰範、山崎康正、小川英夫、米倉覚則、土橋一仁、下井倉ともみ
    • Organizer
      2022年日本天文学会春季年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 野辺山 45 m 鏡 eQ 受信機の搭載及び光学系の評価2022

    • Author(s)
      山崎康正、中村文隆、Chau-Ching Chiong、西村淳、Ross Burns、 谷口琴美、川邊 良平 (NAOJ)、米山翔、川下紗奈、知念翼、小西亜侑、西本晋平、孫赫陽、小川英夫、 大西利和、米倉覚則、土橋一仁、 下井倉ともみ
    • Organizer
      2022年日本天文学会春季年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] On the Report of Current Status of the eQ receiver on 45m telescope2022

    • Author(s)
      中村文隆、Chau Ching Chiong
    • Organizer
      Synergies between ALMA and wide-field high-cadence multi-wavelength surveys
    • Related Report
      2019 Annual Research Report
  • [Presentation] TMC-1におけるゼーマン分裂検出と磁場強度測定2019

    • Author(s)
      中村文隆、楠根貴成、亀野誠司、土橋一仁、下井倉ともみ、谷口琴美、水野いづみ
    • Organizer
      日本天文学会春季年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] CCS Zeeman Observations using NRO 45-m telescope2019

    • Author(s)
      Nakamura, F
    • Organizer
      NAOJ-ASIAA Joint workshop on 40GHz Receiver
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Magnetic field structure of Serpens South2019

    • Author(s)
      Kusune, T.
    • Organizer
      NAOJ-ASIAA Joint workshop on 40GHz Receiver
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Serpens South Cloudの近赤外線偏光観測2018

    • Author(s)
      楠根貴成、中村文隆、土橋一仁、下井倉ともみ、杉谷光司
    • Organizer
      日本天文学会秋季年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 大質量星形成領域 RCW106 分子雲の近赤外線偏光観測2018

    • Author(s)
      玉置捷平, 杉谷光司, 楠根貴成
    • Organizer
      日本天文学会秋季年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Magnetic Field Structure of Serpens South2018

    • Author(s)
      楠根貴成、中村文隆、土橋一仁、下井倉ともみ、杉谷光司
    • Organizer
      Magnetic fields along the star-formation sequence
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Funded Workshop] NAOJ-ASIAA Joint Workshop on Power of wideband receiver: Exploring sciences at 7mm wavelength with large single dish telescopes2019

    • Related Report
      2018 Annual Research Report
  • [Funded Workshop] Power of wideband receiver: Exploring sciences at 7mm wavelength with large single dish telescopes2019

    • Related Report
      2017 Annual Research Report

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Published: 2017-04-28   Modified: 2023-01-30  

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