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100億年前から現在にかけての宇宙における銀河の普遍的な形態進化とその解明

Research Project

Project/Area Number 14J03871
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Astronomy
Research InstitutionTohoku University

Principal Investigator

森下 貴弘  東北大学, 理学研究科, 特別研究員(DC1)

Project Period (FY) 2014-04-25 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2016: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2015: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2014: ¥900,000 (Direct Cost: ¥900,000)
Keywords銀河進化 / 銀河形成 / 星形成 / 宇宙 / 観測 / 天の川銀河 / 星形成率 / 形態進化 / バルジ / ディスク / 銀河形態 / 大質量銀河 / 星形成活動
Outline of Annual Research Achievements

本研究課題はハッブル宇宙望遠鏡(HST)の撮像・分光データを用いて、赤方偏移z=3(120億年前)から現在にかけての銀河進化を形態、星形成率などの物理パラメータによって理解することである。そして同時に、その銀河進化の理解から宇宙がどのように進化してきたのかを理解することである。
今年度における担当研究者の活動は主に海外の研究機関で行われた。渡航先の研究機関(UCLA)はHSTによる観測時間を既に獲得しており(GLASS)、その観測によって得られたデータを使って自身のサイエンス課題に対する答えを追求した。このデータは宇宙望遠鏡による高解像度な撮像データ、かつ可視光から近赤外線まで及ぶ分光データであり、銀河の赤方偏移や星質量、星形成率といった物理量を精度よく決定することができる。
そのデータを用い、研究者はおよそ120億年前に存在する宇宙の初期に形成された大質量銀河の形態と星の性質(年齢)を調査した。地上望遠鏡と異なり、地球大気の影響を受けない宇宙望遠鏡の高解像度撮像データ、高感度分光データ、また、観測される銀河の手前にある銀河団による増光効果を利用することにより、そのような遠方に存在する非常に暗い銀河の性質を初めて調査することが出来た。得られた観測的性質から、そのような銀河は宇宙誕生から10億年ほど経った頃には既に星形成を止めており、非常に極端な星形成史を持つことが分かった。これらの銀河がどうして星形成を止めたのかは未だに理解されておらず、今後の新しい観測によって解き明かす予定である。

Research Progress Status

28年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

28年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • Research Products

    (15 results)

All 2017 2016 2015 2014 Other

All Journal Article (8 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 8 results,  Open Access: 8 results,  Acknowledgement Compliant: 8 results) Presentation (5 results) (of which Int'l Joint Research: 2 results) Remarks (2 results)

  • [Journal Article] The Grism Lens-Amplified Survey from Space (GLASS). IX. The dual origin of low-mass cluster galaxies as revealed by new structural analyses2017

    • Author(s)
      Morishita, Takahiro; Abramson, Louis E.; Treu, Tommaso; Vulcani, Benedetta; Schmidt, Kasper B.; Dressler, Alan; Poggianti, Bianca M.; Malkan, Matthew A.; Wang, Xin; Huang, Kuang-Han; Trenti, Michele; Bradac, Marusa; Hoag, Austin
    • Journal Title

      The Astrophysical Journal

      Volume: 835 Issue: 2 Pages: 254-276

    • DOI

      10.3847/1538-4357/835/2/254

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The Grism Lens-Amplified Survey from Space (GLASS) X. Sub-kpc resolution gas-phase metallicity maps at cosmic noon behind the Hubble Frontier Fields cluster MACS1149.6+22232017

    • Author(s)
      Wang, Xin; Jones, Tucker A.; Treu, Tommaso; Morishita, Takahiro; Abramson, Louis E.; Brammer, Gabriel B.; Huang, Kuang-Han; Malkan, Matthew A.; Schmidt, Kasper B.; Fontana, Adriano; Grillo, Claudio; Henry, Alaina L.; Karman, Wouter; Kelly, Patrick L.; Mason, Charlotte A.; Mercurio, Amata; et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 837 Issue: 1 Pages: 89-107

    • DOI

      10.3847/1538-4357/aa603c

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Detection of Lyman-alpha Emission from a Triply Imaged z = 6.85 Galaxy behind MACS J2129.4-07412016

    • Author(s)
      Huang, Kuang-Han; Lemaux, Brian C.; Schmidt, Kasper B.; Hoag, Austin; Bradac, Marusa; Treu, Tommaso; Dijkstra, Mark; Fontana, Adriano; Henry, Alaina; Malkan, Matthew; Mason, Charlotte; Morishita, Takahiro; Pentericci, Laura; Ryan, Russell E., Jr.; Trenti, Michele; Wang, Xin
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 823 Issue: 1 Pages: 14-20

    • DOI

      10.3847/2041-8205/823/1/l14

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The Grism Lens-Amplified Survey from Space (GLASS). VII. The Diversity of the Distribution of Star Formation in Cluster and Field Galaxies at 0.3 less than or equal to z less than or equal to 0.72016

    • Author(s)
      Vulcani, Benedetta; Treu, Tommaso; Schmidt, Kasper B.; Morishita, Takahiro; Dressler, Alan; Poggianti, Bianca M.; Abramson, Louis; Bradac, Marusa; Brammer, Gabriel B.; Hoag, Austin; Malkan, Matthew; Pentericci, Laura; Trenti, Michele
    • Journal Title

      The Astrophysical Journal

      Volume: 833 Issue: 2 Pages: 178-201

    • DOI

      10.3847/1538-4357/833/2/178

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] THE FATE OF A RED NUGGET: IN SITU STAR FORMATION OF SATELLITES AROUND A MASSIVE COMPACT GALAXY2016

    • Author(s)
      Morishita T., and Ichikawa, T.
    • Journal Title

      Astronimical Journal

      Volume: 816 Issue: 2 Pages: 87-87

    • DOI

      10.3847/0004-637x/816/2/87

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] FROM DIVERSITY TO DICHOTOMY, AND QUENCHING: MILKY-WAY-LIKE AND MASSIVE-GALAXY PROGENITORS AT 0.5 < z < 3.02015

    • Author(s)
      Morishita Takahiro, Ichikawa Takashi, Noguchi Masafumi, Akiyama Masayuki, Patel Shannon G., Kajisawa Masaru, Obata Tomokazu
    • Journal Title

      Astrophysical Journal

      Volume: 805 Issue: 1 Pages: 34-34

    • DOI

      10.1088/0004-637x/805/1/34

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Dust Heating By Low-mass Stars in Massive Galaxies at z< 12015

    • Author(s)
      Kajisawa Masaru, Morishita Takahiro, Taniguchi Yoshiaki, Kobayashi Masakazu, Ichikawa Takashi, Fukui Yasuo
    • Journal Title

      The Astrophysical Journal

      Volume: 801 Issue: 2 Pages: 134-142

    • DOI

      10.1088/0004-637x/801/2/134

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] THE EVOLUTION OF GALAXY SIZE AND MORPHOLOGY AT z~0.5-3.0 IN THE GOODS-N REGION WITH HUBBLE SPACE TELESCOPE/WFC3 DATA2014

    • Author(s)
      Morishita Takahiro, Ichikawa Takashi, Kajisawa Masaru
    • Journal Title

      The Astrophysical Journal

      Volume: 785 Issue: 1 Pages: 18-35

    • DOI

      10.1088/0004-637x/785/1/18

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Updates of photometry and new insight into z~2 passive galaxies2017

    • Author(s)
      Takahiro Morishita
    • Organizer
      GLASS collaboration meeting 2017
    • Place of Presentation
      UCLA (アメリカ合衆国)
    • Year and Date
      2017-03-13
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Size-mass relations of galaxies in cluster and field environments2016

    • Author(s)
      Takahiro Morishita
    • Organizer
      GLASS collaboration meeting 2016
    • Place of Presentation
      UCLA (アメリカ合衆国)
    • Year and Date
      2016-05-09
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 衛星銀河の星生成と大質量コンパクト銀河 (red nugget) との合体進化2016

    • Author(s)
      市川隆、森下貴弘
    • Organizer
      日本天文学会
    • Place of Presentation
      首都大学東京、東京都八王子
    • Year and Date
      2016-03-14
    • Related Report
      2015 Annual Research Report
  • [Presentation] Progenitor Study of Milky-Way-Like Galaxies over the Cosmic High Noon (ポスター)2015

    • Author(s)
      Morishita Takahiro, Ichikawa Takashi, Noguchi Masafumi, Akiyama Masayuki, Patel G. Shannon, Kajisawa Masaru, Obata Tomokazu
    • Organizer
      Back at the Edge of the Universe
    • Place of Presentation
      Sintra, Portugal
    • Year and Date
      2015-03-15 – 2015-03-19
    • Related Report
      2014 Annual Research Report
  • [Presentation] The Stellar Mass Profile of the Milky Way like Galaxies (ポスター)2014

    • Author(s)
      Morishita Takahiro, Ichikawa Takashi, Noguchi Masafumi, Akiyama Masayuki
    • Organizer
      IAU Symposium 311 Galaxy Masses as Constraints of Formation Models
    • Place of Presentation
      Oxford university (Oxford, UK)
    • Year and Date
      2014-07-21 – 2014-07-25
    • Related Report
      2014 Annual Research Report
  • [Remarks] GLASS Reveals Dual-Role Environments

    • URL

      http://glass.astro.ucla.edu/glass-reveals-dual-role-environments-in-galaxy-clusters/

    • Related Report
      2016 Annual Research Report
  • [Remarks] Generating the Sigma Image

    • URL

      http://users.obs.carnegiescience.edu/peng/work/galfit/SIGMA_GEN.html

    • Related Report
      2014 Annual Research Report

URL: 

Published: 2015-01-22   Modified: 2024-03-26  

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