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Formation of star clusters in galacitc disks and the origin of the variation of star clusters

Research Project

Project/Area Number 26800108
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Astronomy
Research InstitutionThe University of Tokyo (2015-2017)
National Astronomical Observatory of Japan (2014)

Principal Investigator

Fujii Michiko  東京大学, 大学院理学系研究科(理学部), 准教授 (90722330)

Project Period (FY) 2014-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords星団 / N体シミュレーション / 天の川銀河 / 星団形成 / 流体シミュレーション / 大質量星団 / 銀河円盤
Outline of Final Research Achievements

Recent observations have found various kinds of star clusters such as massive, dense clusters as young as open clusters and embedded clusters, which are beyond classical classification: open or globular clusters. We study the formation mechanism of these various star clusters. We especially focus on their similarities/differences and the relation to the galactic environment. We performed numerical simulations of star clusters forming in giant molecular clouds (GMC) and found that GMCs typical in the Milky Way (MW) form open clusters, but ones typical in star-forming galaxies form young massive (dense) star clusters. We in addition investigated a galaxy model which is similar to the MW and found parameters in order to reproduce the MW in numerical simulations.

Report

(5 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (28 results)

All 2018 2017 2016 2015 2014 Other

All Int'l Joint Research (4 results) Journal Article (11 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 10 results,  Open Access: 3 results,  Acknowledgement Compliant: 4 results) Presentation (10 results) (of which Int'l Joint Research: 4 results,  Invited: 6 results) Remarks (3 results)

  • [Int'l Joint Research] ライデン大学(オランダ)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] テキサス大学(米国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Leiden Observatory(オランダ)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] Leiden Observatory(オランダ)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Formation of the First Star Clusters and Massive Star Binaries by Fragmentation of Filamentary Primordial Gas Clouds2018

    • Author(s)
      Hirano Shingo , Yoshida Naoki , Sakurai Yuya , Fujii Michiko S.
    • Journal Title

      The Astrophysical Journal

      Volume: 855 Issue: 1 Pages: 17-17

    • DOI

      10.3847/1538-4357/aaaaba

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The dynamics of stellar disks in live dark-matter halos2018

    • Author(s)
      Fujii M S、Bedorf J、Baba J、Zwart S Portegies
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 印刷中 Issue: 2 Pages: 1451-1471

    • DOI

      10.1093/mnras/sty711

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Early chemo-dynamical evolution of dwarf galaxies deduced from enrichment of r-process elements2017

    • Author(s)
      Yutaka Hirai, Yuhri Ishimaru, Takayuki R Saitoh, Michiko S Fujii, Jun Hidaka, Toshitaka Kajino
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 466 Issue: 2 Pages: 2474-2487

    • DOI

      10.1093/mnras/stw3342

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Formation of intermediate-mass black holes through runaway collisions in the first star clusters2017

    • Author(s)
      Sakurai Yuya , Yoshida Naoki , Fujii Michiko S. , Hirano Shingo
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 472 Issue: 2 Pages: 1677-1684

    • DOI

      10.1093/mnras/stx2044

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Formation of young massive clusters from turbulent molecular clouds2017

    • Author(s)
      Fujii, Michiko S., Portegies Zwart, Simon
    • Journal Title

      Formation, evolution, and survival of massive star clusters, Proceedings of the International Astronomical Union, IAU Symposium

      Volume: 316 Issue: S316 Pages: 25-30

    • DOI

      10.1017/s1743921316000545

    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Journal Article] The Scaling Relations and Star Formation Laws of Mini-starburst Complexes2016

    • Author(s)
      Nguyen-Luong, Quang, Nguyen, Hans V. V., Motte, Frederique, Schneider, Nicola, Fujii, Michiko, Louvet, Fabien, Hill, Tracey, Sanhueza, Patricio, Chibueze, James O., Didelon, Pierre
    • Journal Title

      The Astrophysical Journal

      Volume: 833 Issue: 1 Pages: 23-23

    • DOI

      10.3847/0004-637x/833/1/23

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Formation and Dynamical Evolution of Young Star Clusters2016

    • Author(s)
      Fujii, M. S. and Portegies Zwart, S.
    • Journal Title

      The Astrophysical Journal

      Volume: 817 Issue: 1 Pages: 4-4

    • DOI

      10.3847/0004-637x/817/1/4

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The initial mass function of star clusters that form in turbulent molecular clouds2015

    • Author(s)
      Fujii, M. S. and Portegies Zwart, S.
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 449 Issue: 1 Pages: 726-740

    • DOI

      10.1093/mnras/stv293

    • Related Report
      2015 Research-status Report 2014 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Formation of young massive clusters from turbulent molecular clouds2015

    • Author(s)
      Fujii, M. S.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 67 Issue: 4

    • DOI

      10.1093/pasj/psu137

    • Related Report
      2015 Research-status Report 2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Astrophysical site(s) of r-process elements in galactic chemodynamical evolution model2015

    • Author(s)
      Hirai, Yutaka; Ishimaru, Yuhri; Saitoh, Takayuki R.; Fujii, Michiko S.; Hidaka, Jun; Kajino, Toshitaka
    • Journal Title

      EPJ Web of Conferences

      Volume: 109 Pages: 02001-02001

    • DOI

      10.1051/epjconf/201610902001

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enrichment of r-process Elements in Dwarf Spheroidal Galaxies in Chemo-dynamical Evolution Model2015

    • Author(s)
      Hirai, Yutaka; Ishimaru, Yuhri; Saitoh, Takayuki R.; Fujii, Michiko S.; Hidaka, Jun; Kajino, Toshitaka
    • Journal Title

      The Astrophysical Journal

      Volume: 814 Issue: 1 Pages: 41-41

    • DOI

      10.1088/0004-637x/814/1/41

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 天の川銀河のバー形成史とダークマターハローの回転2018

    • Author(s)
      藤井通子
    • Organizer
      日本天文学会2018年春季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] The formation and dynamical evolution of star clusters2016

    • Author(s)
      藤井通子
    • Organizer
      国立天文台天文シミュレーションプロジェクト平成27年度ユーザーズミーティング
    • Place of Presentation
      国立天文台(岩手県水沢市)
    • Year and Date
      2016-01-28
    • Related Report
      2015 Research-status Report
  • [Presentation] Can globular clusters bring millisecond pulsars in the Galactic center?:Tidal disruption of star clusters in the Galactic center2016

    • Author(s)
      藤井通子
    • Organizer
      特別推進研究研究会・宇宙線研究所共同利用研究会「高エネルギーガンマ線でみる極限宇宙2015」
    • Place of Presentation
      東京大学(茨城県柏市)
    • Year and Date
      2016-01-13
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] The formation and dynamical evolution of young star clusters2015

    • Author(s)
      Fujii, M
    • Organizer
      MODEST-15S
    • Place of Presentation
      神戸大学(兵庫県神戸市)
    • Year and Date
      2015-12-07
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] The Origin of the Mass Function of Star Clusters2015

    • Author(s)
      Michiko Fujii
    • Organizer
      IAU General Assembly FM 18: Scale-free processes in the universe
    • Place of Presentation
      Honolulu, Hawaii, USA
    • Year and Date
      2015-08-12 – 2015-08-14
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] The Origin of the Mass Function of Star Clusters2015

    • Author(s)
      Fujii, M.
    • Organizer
      XXIX IAU General Assembly, FM18: Scale-free processes in the universe
    • Place of Presentation
      Hawaii Convention Center、ホノルル、アメリカ
    • Year and Date
      2015-08-12
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Formation of young massive clusters from turbulent molecular clouds2015

    • Author(s)
      Fujii, M. and Portegies Zwart, S.
    • Organizer
      IAUS 316: Formation, evolution, and survival of massive star clusters
    • Place of Presentation
      Hawaii Convention Center、ホノルル、アメリカ
    • Year and Date
      2015-08-11
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Formation of intermediate-mass black holes in star clusters2015

    • Author(s)
      Fujjii, M.
    • Organizer
      Max's 4 questions in X-ray astronomy to be addressed with ASTRO-H
    • Place of Presentation
      東京大学(東京都文京区)
    • Year and Date
      2015-07-31
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 散開星団の力学進化2014

    • Author(s)
      藤井通子
    • Organizer
      第1回DTAシンポジウム「星形成領域および星団環境での惑星の形成と進化」
    • Place of Presentation
      国立天文台(東京都)
    • Year and Date
      2014-09-29 – 2014-09-30
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] 10億体を用いた銀河円盤のN体シミュレーション2014

    • Author(s)
      藤井通子
    • Organizer
      日本天文学会2014年秋季年会
    • Place of Presentation
      山形大学(山形県)
    • Year and Date
      2014-09-11 – 2014-09-13
    • Related Report
      2014 Research-status Report
  • [Remarks] 研究者ホームページ

    • URL

      http://cas.astron.s.u-tokyo.ac.jp/~fujii/

    • Related Report
      2017 Annual Research Report
  • [Remarks] Michiko FUJII's home page

    • URL

      http://cas.astron.s.u-tokyo.ac.jp/~fujii/

    • Related Report
      2016 Research-status Report
  • [Remarks] 国立天文台理論研究部 Research Highlights

    • URL

      http://th.nao.ac.jp/research.html

    • Related Report
      2015 Research-status Report

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Published: 2014-04-04   Modified: 2022-06-07  

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