• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Relation between the large-scale structure of the universe and galaxy evolution revealed by the extremely wide-field imaging of Subaru

Research Project

Project/Area Number 18K13575
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 16010:Astronomy-related
Research InstitutionThe University of Tokyo

Principal Investigator

Toshikawa Jun  東京大学, 宇宙線研究所, 特別研究員 (90760778)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords原始銀河団 / 遠方宇宙 / 銀河進化 / 銀河団形成 / 宇宙の大規模構造 / 遠方銀河 / 大規模構造 / 初期宇宙
Outline of Final Research Achievements

In this research, we have carried out the search for protoclusters, which are considered to be the progenitors of galaxy clusters as seen in the local universe, because protoclusters are important targets to understand the relation between galaxy evolution and the formation of the large-scale structure of the universe. We have made use of the wide-field imaging instrument of the Subaru telescope in order to make a systematic sample of protoclusters. We have investigated the various properties of protoclusters.

Academic Significance and Societal Importance of the Research Achievements

現在の宇宙には様々な銀河が存在している。星形成を終えたような年老いた重い楕円銀河は銀河団のような高密度領域でよく発見され、一方で星形成が活発な若い渦巻銀河は周囲の銀河数が少ない低密度領域に存在している場合が多い。このように銀河の性質と周囲の密度環境には密接な関連があることが知られている。この関係性がどのように作られたのかを理解するためには、現在の宇宙だけではなく遠方宇宙を観測することで形成途中の銀河団である原始銀河団を直接調べることも重要である。しかし原始銀河団は稀な天体であるため発見数が少なかったが、本研究により大規模な原始銀河団サンプルを構築することができ、系統的な研究が可能になった。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (19 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (8 results) Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results) Presentation (7 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results)

  • [Int'l Joint Research] ブラジル国立観測所(ブラジル)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] UCLA(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Bath大学(英国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] ブラジル国立観測所(ブラジル)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] UCLA(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] ブラジル国立観測所(ブラジル)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] UCLA(米国)

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

    • Related Report
      2018 Research-status Report
  • [Journal Article] Accelerated Galaxy Growth and Environmental Quenching in a Protocluster at z = 3.242021

    • Author(s)
      Shi Ke、Toshikawa Jun、Lee Kyoung-Soo、Wang Tao、Cai Zheng、Fang Taotao
    • Journal Title

      The Astrophysical Journal

      Volume: 911 Issue: 1 Pages: 46-46

    • DOI

      10.3847/1538-4357/abe62e

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Faint Quasars Live in the Same Number Density Environments as Lyman Break Galaxies at z ? 42020

    • Author(s)
      Uchiyama Hisakazu、Akiyama Masayuki、Toshikawa Jun、Kashikawa Nobunari、Overzier Roderik、Nagao Tohru、Ichikawa Kohei、Marinello Murilo、Imanishi Masatoshi、Tanaka Masayuki、Matsuoka Yoshiki、Komiyama Yutaka、Ishikawa Shogo、Onoue Masafusa、Kubo Mariko、Harikane Yuichi、Ito Kei、Namiki Shigeru、Liang Yongming
    • Journal Title

      The Astrophysical Journal

      Volume: 905 Issue: 2 Pages: 125-125

    • DOI

      10.3847/1538-4357/abc47b

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Detailed Study of Massive Galaxies in a Protocluster at z = 3.132020

    • Author(s)
      Shi Ke、Toshikawa Jun、Cai Zheng、Lee Kyoung-Soo、Fang Taotao
    • Journal Title

      The Astrophysical Journal

      Volume: 899 Issue: 1 Pages: 79-79

    • DOI

      10.3847/1538-4357/aba626

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Discovery of Protoclusters at z~3.7 and 4.9: Embedded in Primordial Superclusters2020

    • Author(s)
      Toshikawa Jun、Malkan Matthew A.、Kashikawa Nobunari、Overzier Roderik、Uchiyama Hisakazu、Ota Kazuaki、Ishikawa Shogo、Ito Kei
    • Journal Title

      The Astrophysical Journal

      Volume: 888 Issue: 2 Pages: 89-89

    • DOI

      10.3847/1538-4357/ab5e85

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Search for protoclusters at z~4-5: plausible sites of the formation of massive galaxies2020

    • Author(s)
      利川潤
    • Organizer
      SWIMS-on-Subaru Workshop
    • Related Report
      2020 Annual Research Report
  • [Presentation] Protocluster Candidates at z~4 in the Subaru/HSC survey2020

    • Author(s)
      利川潤
    • Organizer
      Protoclusters: galaxies in confinement
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Discovery of Protoclusters at z=3.7 and 4.9: Embedded in Primordial Superclusters2019

    • Author(s)
      利川潤
    • Organizer
      FIRST GALAXIES, FIRST STRUCTURES
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Systematic Study of Protoclusters Based on Wide-field Survey2019

    • Author(s)
      利川潤
    • Organizer
      FAPESP-JSPS Workshop ― Dark Energy, Dark Matter and Galaxies
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 赤方偏移4から5における原始銀河団とその周囲の大規模構造2019

    • Author(s)
      利川潤
    • Organizer
      日本天文学会2019年春季年会
    • Related Report
      2018 Research-status Report
  • [Presentation] A systematic search for protoclusters based on Subaru/HSC survey2019

    • Author(s)
      利川潤
    • Organizer
      Panchromatic Panoramic Studies of Galaxy Clusters: from HSC to PFS and ULTIMATE
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] A systematic search for protoclusters at z~4 based on the >100deg^2 area2018

    • Author(s)
      利川潤
    • Organizer
      XXXth General Assembly of the International Astronomical Union
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi