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A study of nuclear starburst with the use of new star-formation rate estimator

Research Project

Project/Area Number 15K05035
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Astronomy
Research InstitutionNational Astronomical Observatory of Japan

Principal Investigator

Nakanishi Kouichiro  国立天文台, アルマプロジェクト, 特任准教授 (60399277)

Research Collaborator Ando Ryo  
Kohno Kotaro  
Izumi Takuma  
Imanishi Masatoshi  
Saito Toshiki  
Miura Rie E.  
Bendo George  
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords爆発的星形成 / 銀河 / 電波 / 天文学 / 爆発的星形成銀河
Outline of Final Research Achievements

The aim of this observation study was characterize intensity, spatial structure, and environment of starburst region in the center of galaxies. ALMA observations toward nearby starburst galaxies successfully detected millimeter and sub-millimeter radio recombination lines and demonstrated that the lines were powerful tool to capture star-formation activity. Dust continuum emission and molecular gas emission lines were observed simultaneously in unprecedented spatial resolution. The observations uncovered star-forming clumps having diverse nature and diverse evolutionary phases in the heart of starburst galaxies.

Academic Significance and Societal Importance of the Research Achievements

従来の望遠鏡による観測では難しかったスターバースト銀河の中心部での星形成活動の分布や星間物質の性質を細かく詳しく調べることが、新しい望遠鏡による観測によって可能であることを実証した点に本研究の意義がある。本研究で得られた成果は、スターバースト銀河の中心部が一様ではなく複雑で多様性に富む場所であること、その多様性の正体や起源を解き明かすことがスターバーストの発生メカニズム解明の手がかりになるであろうことを示唆しており、スターバースト研究にひとつの新しい局面を開いた点にも意義がある。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (21 results)

All 2019 2018 2017 2016 2015 Other

All Int'l Joint Research (5 results) Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (10 results) (of which Int'l Joint Research: 6 results) Remarks (1 results)

  • [Int'l Joint Research] Max Planck Institute for Astronomy(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Institute of Astronomy and Astrophysics(中国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] The University of Manchester(英国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Joint ALMA Observatory(チリ)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Institute of Astronomy and Astrophysics(中華民国)

    • Related Report
      2017 Research-status Report
  • [Journal Article] ALMA Spatially Resolved Dense Molecular Gas Survey of Nearby Ultraluminous Infrared Galaxies2019

    • Author(s)
      Imanishi Masatoshi、Nakanishi Kouichiro、Izumi Takuma
    • Journal Title

      The Astrophysical Journal Supplement Series

      Volume: 241 Issue: 2 Pages: 19-19

    • DOI

      10.3847/1538-4365/ab05b9

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ALMA Multiple-transition Observations of High-density Molecular Tracers in Ultraluminous Infrared Galaxies2018

    • Author(s)
      Imanishi Masatoshi、Nakanishi Kouichiro、Izumi Takuma
    • Journal Title

      The Astrophysical Journal

      Volume: 856 Issue: 2 Pages: 143-143

    • DOI

      10.3847/1538-4357/aab42f

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Diverse Nuclear Star-forming Activities in the Heart of NGC 253 Resolved with 10-pc-scale ALMA Images2017

    • Author(s)
      Ando Ryo、Nakanishi Kouichiro、Kohno Kotaro、Izumi Takuma、Martin Sergio、Harada Nanase、Takano Shuro、Kuno Nario、Nakai Naomasa、Sugai Hajime、Sorai Kazuo、Tosaki Tomoka、Matsubayashi Kazuya、Nakajima Taku、Nishimura Yuri、Tamura Yoichi
    • Journal Title

      The Astrophysical Journal

      Volume: 849 Issue: 2 Pages: 81-81

    • DOI

      10.3847/1538-4357/aa8fd4

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Tests of star formation metrics in the low-metallicity galaxy NGC 5253 using ALMA observations of H30α line emission2017

    • Author(s)
      Bendo G. J.、Miura R. E.、Espada D.、Nakanishi K.、Beswick R. J.、D'Cruze M. J.、Dickinson C.、Fuller G. A.
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 472 Issue: 1 Pages: 1239-1252

    • DOI

      10.1093/mnras/stx1837

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] ALMA observations of the submillimetre hydrogen recombination line from the type-2 active nucleus of NGC 10682016

    • Author(s)
      Izumi, Takuma; Nakanishi, Kouichiro; Imanishi, Masatoshi; Kohno, Kotaro
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: TBD Issue: 4 Pages: 3629-3634

    • DOI

      10.1093/mnras/stw324

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] High spatial resolution imaging of the NGC 253 nuclear starburst2018

    • Author(s)
      Kouichiro Nakanishi
    • Organizer
      East Asian ALMA Science Workshop 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dense ionized gas embedded with infant massive stellar clusters in the NGC 253 nuclear starburst2017

    • Author(s)
      K.Nakanishi, N.Nakai, N.Kuno, K.Kohno, R.Ando, K.Sorai, K.Matsubayashi, H.Sugai
    • Organizer
      Measuring Star Formation in the Radio, Millimetre, and Submillimetre
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] High angular resolution and high sensitivity millimeter-wave continuum imaging toward the NGC 253 starburst nucleus2017

    • Author(s)
      中西康一郎, 松林和也, 徂徠和夫, 中井直正, 久野成夫, 河野孝太郎, 安藤亮, 菅井肇
    • Organizer
      日本天文学会2017年秋季年会
    • Related Report
      2017 Research-status Report
  • [Presentation] ALMA imaging of NGC 253 nuclear starburst and anticipation of future high resolution observations2017

    • Author(s)
      K.Nakanishi, R.Ando, K.Kohno, K.Sorai, N.Nakai N.Kuno, K.Matsubayashi, H.Sugai, T.Izumi, S.Martin, N.Harada, S.Takano, T.Tosaki, T.Nakajima, Y.Nishimura, Y.Tamura
    • Organizer
      ALMA Long Baseline Workshop
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Dense ionized gas embedded with infant massive stellar clusters in the NGC 253 nuclear starburst2016

    • Author(s)
      Kouichiro Nakanishi, Kazuo Sorai, Naomasa Nakai, Nario Kuno, Kazuya Matsubayashi, Hajime Sugai, Ryo Ando, Kotaro Kohno
    • Organizer
      Half a Decade of ALMA: Cosmic Dawns Transformed
    • Place of Presentation
      Renaissance Indian Wells Resort & Spa Indian Wells, CA, USA
    • Year and Date
      2016-09-20
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] ALMAを用いたサブミリ波帯水素再結合線観測による活動銀河核広輝線 領域の探査可能性の検討2016

    • Author(s)
      泉拓磨, 河野孝太郎, 中西康一郎, 今西昌俊
    • Organizer
      日本天文学会秋季年会
    • Place of Presentation
      愛媛大学(愛媛県松山市)
    • Year and Date
      2016-09-14
    • Related Report
      2016 Research-status Report
  • [Presentation] Ionized gas properties in the starburst region of NGC 253 uncovered by ALMA high spatial resolution millimeter observations2016

    • Author(s)
      中西康一郎, 中井直正, 久野成夫, 河野孝太郎, 安藤亮, 徂徠和夫, 松林和也, 菅井肇
    • Organizer
      日本天文学会秋季年会
    • Place of Presentation
      愛媛大学(愛媛県松山市)
    • Related Report
      2016 Research-status Report
  • [Presentation] 5pc分解能で見た近傍星形成銀河NGC253中心部の星形成活動の多様性2016

    • Author(s)
      安藤亮, 河野孝太郎, 田村陽一, 泉拓磨, 谷口暁星, 中西康一郎, 原田ななせ, 高野秀路, 中島拓, 徂徠和夫, 中井直正, 久野成夫, 菅井肇, 松林和也
    • Organizer
      日本天文学会秋季年会
    • Place of Presentation
      愛媛大学(愛媛県松山市)
    • Related Report
      2016 Research-status Report
  • [Presentation] Five Parsec View of the Diverse Starburst Activities in the Heart of NGC2532016

    • Author(s)
      Ryo Ando, Kotaro Kohno, Yoichi Tamura, Takuma Izumi, Akio Taniguchi, Koichiro Nakanishi, Nanase Harada, Shuro Takano, Taku Nakajima, Tomoka Tosaki, Kazuo Sorai, Naomasa Nakai, Nario Kuno, Hajime Sugai, Kazuya Matsubayashi
    • Organizer
      Half a Decade of ALMA: Cosmic Dawns Transformed
    • Place of Presentation
      Renaissance Indian Wells Resort & Spa Indian Wells, CA, USA
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Millimeter/Sub-millimeter Hydrogen Recombination Line in the Center of NGC 2532015

    • Author(s)
      Kouichiro Nakanishi
    • Organizer
      East Asian ALMA Science Workshop 2015
    • Place of Presentation
      大阪府立大学I-SITEなんば(大阪府大阪市)
    • Year and Date
      2015-12-09
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Remarks] スターバースト心臓部で見えてきた熱い“分子の密林”

    • URL

      https://alma-telescope.jp/news/press/ngc253-201711

    • Related Report
      2017 Research-status Report

URL: 

Published: 2015-04-16   Modified: 2022-02-22  

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