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Origin of Chemical Abundance Anomalies in Globular Clusters

Research Project

Project/Area Number 21K03614
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 16010:Astronomy-related
Research InstitutionKobe University

Principal Investigator

Saitoh Takayuki  神戸大学, 理学研究科, 准教授 (40399291)

Co-Investigator(Kenkyū-buntansha) 平居 悠  東北大学, 理学研究科, 特任研究員(日本学術振興会特別研究員CPD) (60824232)
藤井 通子  東京大学, 大学院理学系研究科(理学部), 准教授 (90722330)
Project Period (FY) 2021-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords星団形成 / 金属組成異常 / 銀河形成 / 化学進化 / 化学組成 / GN-z11 / 球状星団 / 組成異常
Outline of Research at the Start

本研究の目的は、球状星団で近年見つかってきた元素組成異常の起源は何かという問いに答えることである。そのために、既存の化学進化モデルを大幅に拡張して多様な起源候補過程を含み、恒星スケールまで分解した超高分解能銀河形成シミュレーションを行い、その起源の研究を行う。

Outline of Final Research Achievements

We investigated the chemical composition of star clusters formed during galaxy formation using high-resolution galaxy formation simulations that incorporate various chemical evolution channels including stellar winds, supernova explosions, and mass loss from AGB stars. Our results showed that the clusters' metal content changes during their initial formation period of approximately 10 Myr due to pollution from stellar winds. This demonstrated how clusters exhibiting Na-O anti-correlation can form. We also showed that such clusters are forming around high-redshift galaxies recently discovered by JWST.

Academic Significance and Societal Importance of the Research Achievements

古典的には球状星団は同時期に生まれた単一の金属組成を持つ構成からなる天体だと考えられてきたが、観測的研究の進展に伴い、化学組成に非一様性があることが明らかにされてきた。本研究課題では、このような組成異常を持つ球状星団が、銀河形成シミュレーションから自然に形成されうることを示したという点で新規性を持つ。

Report

(5 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (77 results)

All 2025 2024 2023 2022 2021 Other

All Int'l Joint Research (10 results) Journal Article (25 results) (of which Int'l Joint Research: 22 results,  Peer Reviewed: 24 results,  Open Access: 23 results) Presentation (37 results) (of which Int'l Joint Research: 9 results,  Invited: 12 results) Remarks (5 results)

  • [Int'l Joint Research] 中山大学/中国科学院/北京師範大学(中国)

    • Related Report
      2024 Annual Research Report
  • [Int'l Joint Research] ノートルダム大学/テキサス大学(米国)

    • Related Report
      2024 Annual Research Report
  • [Int'l Joint Research] ジュネーヴ大学(スイス)

    • Related Report
      2024 Annual Research Report
  • [Int'l Joint Research] ポツダム天体物理研究所(ドイツ)

    • Related Report
      2024 Annual Research Report
  • [Int'l Joint Research] Universite libre de Bruxelles(ベルギー)

    • Related Report
      2024 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2024 Annual Research Report
  • [Int'l Joint Research] New York University/Princeton University/Carnegie Mellon University(米国)

    • Related Report
      2023 Research-status Report
  • [Int'l Joint Research] 中山大学(中国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Notre Dame(米国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] 中山大学(中国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Fluorine production in He-burning regions of massive stars during cosmic history2025

    • Author(s)
      Tsiatsiou Sophie、Meynet Georges、Farrell Eoin、Hirai Yutaka、Choplin Arthur、Sibony Yves、Martinet Sebastien、Guerco Rafael、Smith Verne、Cunha Katia、Goriely Stephane、Arnould Marcel、Fernandez-Trincado Jose G.、Ekstrom Sylvia
    • Journal Title

      Astronomy & Astrophysics

      Volume: 696 Pages: A241-A241

    • DOI

      10.1051/0004-6361/202453209

    • Related Report
      2024 Annual Research Report
  • [Journal Article] SIRIUS: Identifying Metal-poor Stars Enriched by a Single Supernova in a Dwarf Galaxy Cosmological Zoom-in Simulation Resolving Individual Massive Stars2025

    • Author(s)
      Hirai Yutaka、Saitoh Takayuki R.、Fujii Michiko S.、Kaneko Katsuhiro、Beers Timothy C.
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 980 Issue: 2 Pages: L25-L25

    • DOI

      10.3847/2041-8213/adaf95

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Chemo-dynamical Evolution of Simulated Satellites for a Milky Way?like Galaxy2024

    • Author(s)
      Hirai Yutaka、Kirby Evan N.、Chiba Masashi、Hayashi Kohei、Anguiano Borja、Saitoh Takayuki R.、Ishigaki Miho N.、Beers Timothy C.
    • Journal Title

      The Astrophysical Journal

      Volume: 970 Issue: 2 Pages: 105-105

    • DOI

      10.3847/1538-4357/ad500c

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Candidate Members of the VMP/EMP Disk System of the Galaxy from the SkyMapper and SAGES Surveys2024

    • Author(s)
      Hong Jihye、Beers Timothy C.、Lee Young Sun、Huang Yang、Hirai Yutaka、Cabrera Garcia Jonathan、Shank Derek、Xu Shuai、Yuan Haibo、Mardini Mohammad K.、Catapano Thomas、Zhao Gang、Fan Zhou、Zheng Jie、Wang Wei、Tan Kefeng、Zhao Jingkun、Li Chun
    • Journal Title

      The Astrophysical Journal Supplement Series

      Volume: 273 Issue: 1 Pages: 12-12

    • DOI

      10.3847/1538-4365/ad4a6f

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rapidly rotating Population III stellar models as a source of primary nitrogen2024

    • Author(s)
      Tsiatsiou Sophie、Sibony Yves、Nandal Devesh、Sciarini Luca、Hirai Yutaka、Ekstrom Sylvia、Farrell Eoin、Murphy Laura、Choplin Arthur、Hirschi Raphael、Chiappini Cristina、Liu Boyuan、Bromm Volker、Groh Jose、Meynet Georges
    • Journal Title

      Astronomy and Astrophysics

      Volume: 687 Pages: A307-A307

    • DOI

      10.1051/0004-6361/202449156

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Solar System Migration Points to a Renewed Concept: Galactic Habitable Orbits2024

    • Author(s)
      Baba Junichi、Tsujimoto Takuji、Saitoh Takayuki R.
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 976 Issue: 2 Pages: L29-L29

    • DOI

      10.3847/2041-8213/ad9260

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impulsive gas fueling to the galactic center in a barred galaxy due to falls of gas clouds2024

    • Author(s)
      Matsui Hidenori、Masakawa Toshiyasu、Habe Asao、Saitoh Takayuki R
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 76 Issue: 2 Pages: 285-292

    • DOI

      10.1093/pasj/psae009

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] EMPRESS. XII. Statistics on the Dynamics and Gas Mass Fraction of Extremely Metal-poor Galaxies2024

    • Author(s)
      Xu Yi, Ouchi Masami, Isobe Yuki, Mawatari Ken, et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 961 Issue: 1 Pages: 49-49

    • DOI

      10.3847/1538-4357/ad06ab

    • Related Report
      2024 Annual Research Report 2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] EMPRESS. IX. Extremely Metal-poor Galaxies are Very Gas-rich Dispersion-dominated Systems: Will the James Webb Space Telescope Witness Gaseous Turbulent High-z Primordial Galaxies?2023

    • Author(s)
      Isobe Yuki, Ouchi Masami, Nakajima Kimihiko, Mawatari Ken, et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 951 Issue: 2 Pages: 102-102

    • DOI

      10.3847/1538-4357/accc87

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] EMPRESS. XI. SDSS and JWST Search for Local and z ~4-5 Extremely Metal-poor Galaxies (EMPGs): Clustering and Chemical Properties of Local EMPGs2023

    • Author(s)
      Nishigaki Moka、Ouchi Masami、Nakajima Kimihiko、Ono Yoshiaki、Rauch Michael、Isobe Yuki、Harikane Yuichi、Narita Kanako、Zahedy Fakhri、Xu Yi、Yajima Hidenobu、Fukushima Hajime、Hirai Yutaka、Kim Ji Hoon、Inoue Shigeki、Kusakabe Haruka、Lee Chien-Hsiu、Nagao Tohru、Onodera Masato
    • Journal Title

      The Astrophysical Journal

      Volume: 952 Issue: 1 Pages: 11-11

    • DOI

      10.3847/1538-4357/accf14

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 3D-Spatiotemporal forecasting the expansion of supernova shells using deep learning towards high-resolution galaxy simulations2023

    • Author(s)
      Hirashima Keiya、Moriwaki Kana、Fujii Michiko S、Hirai Yutaka、Saitoh Takayuki R、Makino Junichiro
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 526 Issue: 3 Pages: 4054-4066

    • DOI

      10.1093/mnras/stad2864

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Exploring the Sun’s birth radius and the distribution of planet building blocks in the Milky Way galaxy: a multizone Galactic chemical evolution approach2023

    • Author(s)
      Baba Junichi、Saitoh Takayuki R、Tsujimoto Takuji
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 526 Issue: 4 Pages: 6088-6102

    • DOI

      10.1093/mnras/stad3188

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Chemodynamically Tagged Groups of CEMP Stars in the Halo of the Milky Way. I. Untangling the Origins of CEMP-s and CEMP-no Stars2023

    • Author(s)
      Zepeda Joseph、Beers Timothy C.、Placco Vinicius M.、Shank Derek、Gudin Dmitrii、Hirai Yutaka、Mardini Mohammad、Pifer Colin、Catapano Thomas、Calagna Sean
    • Journal Title

      The Astrophysical Journal

      Volume: 947 Issue: 1 Pages: 23-23

    • DOI

      10.3847/1538-4357/acbbcc

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Insights on the Sun Birth Environment in the Context of Star Cluster Formation in Hub?Filament Systems2023

    • Author(s)
      Arzoumanian Doris、Arakawa Sota、Kobayashi Masato I. N.、Iwasaki Kazunari、Fukuda Kohei、Mori Shoji、Hirai Yutaka、Kunitomo Masanobu、Kumar M. S. Nanda、Kokubo Eiichiro
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 947 Issue: 2 Pages: L29-L29

    • DOI

      10.3847/2041-8213/acc849

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Origin of the Large Magellanic Cloud Globular Cluster NGC 20052023

    • Author(s)
      Piatti Andres E.、Hirai Yutaka
    • Journal Title

      The Astronomical Journal

      Volume: 165 Issue: 5 Pages: 213-213

    • DOI

      10.3847/1538-3881/acc6d1

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dark Matter Halo Properties of the Galactic Dwarf Satellites: Implication for Chemo-dynamical Evolution of the Satellites and a Challenge to Lambda Cold Dark Matter2023

    • Author(s)
      Hayashi Kohei、Hirai Yutaka、Chiba Masashi、Ishiyama Tomoaki
    • Journal Title

      The Astrophysical Journal

      Volume: 953 Issue: 2 Pages: 185-185

    • DOI

      10.3847/1538-4357/ace33e

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Probing the Galactic halo with RR Lyrae stars - V. Chemistry, kinematics, and dynamically tagged groups2023

    • Author(s)
      Cabrera Garcia Jonathan、Beers Timothy C、Huang Yang、Li Xin-Yi、Liu Gaochao、Zhang Huawei、Hong Jihye、Lee Young Sun、Shank Derek、Gudin Dmitrii、Hirai Yutaka、Komater Dante
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 527 Issue: 3 Pages: 8973-8990

    • DOI

      10.1093/mnras/stad3674

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] SIRIUS Project IV. The formation history of the Orion Nebula Cluster driven by clump mergers2022

    • Author(s)
      Fujii Michiko S、Wang Long、Hirai Yutaka、Shimajiri Yoshito、Kumamoto Jun、Saitoh Takayuki
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 514 Issue: 2 Pages: 2513-2526

    • DOI

      10.1093/mnras/stac1496

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] EMPRESS. VIII. A New Determination of Primordial He Abundance with Extremely Metal-poor Galaxies: A Suggestion of the Lepton Asymmetry and Implications for the Hubble Tension2022

    • Author(s)
      Matsumoto Akinori、Ouchi Masami、Nakajima Kimihiko、Kawasaki Masahiro、Murai Kai、 et al
    • Journal Title

      The Astrophysical Journal

      Volume: 941 Issue: 2 Pages: 167-167

    • DOI

      10.3847/1538-4357/ac9ea1

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] SIRIUS Project V. Formation of off-centre ionized bubbles associated with Orion Nebula Cluster2022

    • Author(s)
      Fujii Michiko S、Hattori Kohei、Wang Long、Hirai Yutaka、Kumamoto Jun、Shimajiri Yoshito、Saitoh Takayuki R
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 514 Issue: 1 Pages: 43-54

    • DOI

      10.1093/mnras/stac808

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Origin of highly r-process-enhanced stars in a cosmological zoom-in simulation of a Milky Way-like galaxy2022

    • Author(s)
      Hirai Yutaka、Beers Timothy C、Chiba Masashi、Aoki Wako、Shank Derek、Saitoh Takayuki R、Okamoto Takashi、Makino Junichiro
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 517 Issue: 4 Pages: 4856-4874

    • DOI

      10.1093/mnras/stac2489

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] SIRIUS project. I. Star formation models for star-by-star simulations of star clusters and galaxy formation2021

    • Author(s)
      Hirai Yutaka、Fujii Michiko S、Saitoh Takayuki R
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 73 Issue: 4 Pages: 1036-1056

    • DOI

      10.1093/pasj/psab038

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] SIRIUS project. II. A new tree-direct hybrid code for smoothed particle hydrodynamics/<i>N</i>-body simulations of star clusters2021

    • Author(s)
      Fujii Michiko S、Saitoh Takayuki R、Wang Long、Hirai Yutaka
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 73 Issue: 4 Pages: 1057-1073

    • DOI

      10.1093/pasj/psab037

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] SIRIUS project. III. Star-by-star simulations of star cluster formation using a direct <i> <b>N</b> </i>-body integrator with stellar feedback2021

    • Author(s)
      Fujii Michiko S、Saitoh Takayuki R、Hirai Yutaka、Wang Long
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 73 Issue: 4 Pages: 1074-1099

    • DOI

      10.1093/pasj/psab061

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Neutron star mergers as the astrophysical site of the r-process in the Milky Way and its satellite galaxies2021

    • Author(s)
      Wanajo Shinya、Hirai Yutaka、Prantzos Nikos
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 505 Issue: 4 Pages: 5862-5883

    • DOI

      10.1093/mnras/stab1655

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] The R-Process Alliance: Enrichment of R-process Elements in Simulated Milky Way-like Galaxies2025

    • Author(s)
      Yutaka Hirai, Timothy C. Beers, Young Sun Lee, Shinya Wanajo, Ian U. Roederer, Masaomi Tanaka, Masashi Chiba, Takayuki R. Saitoh, Vinicius M. Placco, Terese T. Hansen, Rana Ezzeddine, Anna Frebel, Erika M. Holmbeck, Charli M. Sakari
    • Organizer
      APS Global Physics Summit
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 星一つ一つまで再現した銀河形成シミュレーションへ向けて2025

    • Author(s)
      藤井通子
    • Organizer
      シンポジウム「ポスト富岳で拓くアプリケーションの未来」
    • Related Report
      2024 Annual Research Report
  • [Presentation] 球状星団に中間質量ブラックホールは存在するか2025

    • Author(s)
      藤井通子
    • Organizer
      ブラックホール探査研究会2025
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 銀河衝突のシミュレーション研究2024

    • Author(s)
      斎藤貴之
    • Organizer
      Violent Universe
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 高赤方偏移銀河中心における星風由来の金属量汚染2024

    • Author(s)
      斎藤貴之 , 藤井通子 , 平居悠 , 磯部優樹
    • Organizer
      日本天文学会2024年秋期年会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 形成中の球状星団での中間質量ブラックホール形成2024

    • Author(s)
      藤井通子 , 谷川衝 , Long Wang , 斎藤貴之 , 平居悠
    • Organizer
      日本天文学会2024年秋季年会
    • Related Report
      2024 Annual Research Report
  • [Presentation] AI サロゲートモデルを用いた star-by-star 銀河形成シミュレーションの高速化2024

    • Author(s)
      平島敬也 , 森脇可奈 , 藤井通子 , 平居悠 , 斎藤貴之 , 牧野淳一郎 , Shirley Ho
    • Organizer
      日本天文学会2024年秋期年会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 高赤方偏移銀河における高いN/O 比の実現について2024

    • Author(s)
      斎藤貴之, 藤井通子, 平居悠, 磯部優樹
    • Organizer
      2024年度国立天文台CfCAユーザーズミーティング
    • Related Report
      2024 Annual Research Report
  • [Presentation] Enrichment of R-process Elements in a Simulated Milky Way-like Galaxy2024

    • Author(s)
      平居悠
    • Organizer
      2024年度国立天文台CfCAユーザーズミーティング
    • Related Report
      2024 Annual Research Report
  • [Presentation] Simulations Resolving Individual Stars (SIRIUS) Project: Toward Understanding the Origins of Carbon2024

    • Author(s)
      平居悠
    • Organizer
      IReNA/NAOJ workshop "Astrophysical Origins of Carbon
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] PFS高分散分光モードと銀河形成シミュレーションで探る銀河系形成2024

    • Author(s)
      平居悠
    • Organizer
      すばる3研究会
    • Related Report
      2024 Annual Research Report
  • [Presentation] Galaxy Formation Simulations and Galactic Archaeology in JWST and ELTs Era2024

    • Author(s)
      平居悠
    • Organizer
      ELT Science in Light of JWST
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The Formation of the Milky Way and Gold-Rich Stars2024

    • Author(s)
      平居悠
    • Organizer
      Mexborough & Swinton Astronomical Society
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 星一つ一つを再現した大質量星団形成シミュレーション2024

    • Author(s)
      藤井通子
    • Organizer
      初代星・初代銀河研究会FSFG2024
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] Next-generation simulations of galaxy formation: coupling surrogate models with conventional simulations2024

    • Author(s)
      藤井通子
    • Organizer
      CCS International Symposium 2024
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Formation of globular clusters with intermediate-mass black holes2024

    • Author(s)
      藤井通子
    • Organizer
      MODEST24
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Formation of intermediate-mass black hole in forming star clusters2024

    • Author(s)
      藤井通子
    • Organizer
      つくば宇宙フォーラム
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] Star-by-star N-body/smoothed-particle hydrodynamics simulation of star cluster formation2024

    • Author(s)
      藤井通子
    • Organizer
      Alpbach workshop on clouds
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 高赤方偏移銀河における星団形成とその化学組成2024

    • Author(s)
      斎藤貴之, 藤井通子, 平居悠, 磯部優樹
    • Organizer
      日本天文学会春期年会
    • Related Report
      2023 Research-status Report
  • [Presentation] 正二十面体による HII 領域推定の拡張:統計的な振る舞いについて2024

    • Author(s)
      王蘊玉, 斎藤貴之, 牧野淳一郎, 藤井通子, 平居悠
    • Organizer
      日本天文学会春期年会
    • Related Report
      2023 Research-status Report
  • [Presentation] 超新星フィードバックのサロゲートモデルを用いた銀河形成シミュレーショ ンの高速化2024

    • Author(s)
      平島敬也, 森脇可奈, 藤井通子, 斎藤貴之, 牧野淳 一郎, Shirley Ho
    • Organizer
      日本天文学会春期年会
    • Related Report
      2023 Research-status Report
    • Invited
  • [Presentation] 球状星団形成期の星の暴走的合体による超大質量星形成と周囲のガスの汚染2024

    • Author(s)
      藤井通子, 谷川衝, Long Wang, 斎藤貴之, 平居悠
    • Organizer
      日本天文学会春期年会
    • Related Report
      2023 Research-status Report
  • [Presentation] Star-by-star 銀河形成シミュレーションに向けた超新星フィードバックのサロ ゲートモデリング2023

    • Author(s)
      平島敬也, 藤井通子, Shirley Ho, 森脇可奈, 平居 悠, 斎藤貴之, 牧野淳一郎
    • Organizer
      日本天文学会秋季年会
    • Related Report
      2023 Research-status Report
  • [Presentation] 天の川銀河の多領域多元素化学進化モデルに基づく太陽系誕生半径の推定2023

    • Author(s)
      馬場淳一, 辻本拓司, 斎藤貴之
    • Organizer
      日本天文学会秋季年会
    • Related Report
      2023 Research-status Report
  • [Presentation] 球状星団形成期の星の暴走的合体からの中質量ブラックホール形成2023

    • Author(s)
      藤井通子, 谷川衝, Long Wang, 斎藤貴之, 平居悠
    • Organizer
      日本天文学会秋季年会
    • Related Report
      2023 Research-status Report
  • [Presentation] N -body SPH code ASURA の開発とその周辺2023

    • Author(s)
      斎藤貴之
    • Organizer
      シミュレーション天文学のこれまでとこれから
    • Related Report
      2023 Research-status Report
  • [Presentation] Simulation of galaxy formation using GRAPEs2023

    • Author(s)
      斎藤貴之
    • Organizer
      MODEST-23 JM
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] 衝突する銀河2023

    • Author(s)
      斎藤貴之
    • Organizer
      衝突研究会
    • Related Report
      2023 Research-status Report
    • Invited
  • [Presentation] SIRIUS Project: Star-by-Star Simulations of Star Clusters and Galaxies2023

    • Author(s)
      Yutaka Hirai, Michiko Fujii, Takayuki Saitoh, Long Wang
    • Organizer
      MEETING OF THE AMERICAN ASTRONOMICAL SOCIETY
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 正二十面体による HII 領域推定の拡張2023

    • Author(s)
      王蘊玉 , 斎藤貴之 , 牧野淳一郎 , 藤井通子 , 平居悠
    • Organizer
      日本天文学会 2023年 春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 高分解能矮小銀河形成シミュレーションで探るコア-カスプ問題2023

    • Author(s)
      金子克大 , 藤井通子 , 斎藤貴之 , 平居悠
    • Organizer
      日本天文学会 2023年 春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 銀河形成シミュレーション2022

    • Author(s)
      斎藤貴之
    • Organizer
      第15回 High Performance Computing Physics (HPC-Phys) 勉強会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 球状星団形成期の星の合体と超大質量星形成2022

    • Author(s)
      藤井通子, 谷川衝, Long Wang, 斎藤貴之, 平居悠
    • Organizer
      日本天文学会 2022年 秋季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Orion Nebula の形成と大質量星の運動について2022

    • Author(s)
      藤井通子,Long Wang,斎藤貴之,服部公平,平居悠
    • Organizer
      日本天文学会2022年春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 銀河衝突、爆発的星形成、星団形成2021

    • Author(s)
      斎藤貴之
    • Organizer
      様々なスケールの衝突流による誘発的星形成~大質量星から超大質量星団まで~
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 次世代銀河形成シミュレーションへ向けて2021

    • Author(s)
      斎藤貴之,行方大輔,岩澤全規,平居悠,細野七月,野村昴太郎,坪内美幸,牧野淳一郎,岡本崇,藤井通子,平島敬也
    • Organizer
      第15回アクセラレーション技術発表討論会「富岳による高度科学技術計算」
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Formation of the Orion Nebula Cluster2021

    • Author(s)
      藤井通子,Long Wang,斎藤貴之,服部公平,平居悠
    • Organizer
      日本天文学会 2021 年秋季年会
    • Related Report
      2021 Research-status Report
  • [Remarks] 最先端のシミュレーションによって明らかになった中間質量ブラックホール形成過程

    • URL

      https://www.kobe-u.ac.jp/ja/news/article/20240531-65676/

    • Related Report
      2024 Annual Research Report
  • [Remarks] 銀河ダイナミクスが導く太陽系の旅路

    • URL

      https://www.kobe-u.ac.jp/ja/news/article/20241205-66308/

    • Related Report
      2024 Annual Research Report
  • [Remarks] AIが描く超新星爆発の広がり 深層学習を用いた超新星爆発シミュレーションの高速再現技術

    • URL

      https://www.kobe-u.ac.jp/ja/news/article/2023_10_23_01/

    • Related Report
      2023 Research-status Report
  • [Remarks] 太陽系、10,000光年も遠くで誕生か? 元素組成から探る太陽系誕生地と惑星系多様性の謎

    • URL

      https://www.kobe-u.ac.jp/ja/news/article/20231114-5928/

    • Related Report
      2023 Research-status Report
  • [Remarks] SIRIUS Project

    • URL

      https://sites.google.com/g.ecc.u-tokyo.ac.jp/sirius-project/

    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2026-01-16  

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