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赤外線衛星観測によって解き明かす、銀河の一生と物質進化の関係

Research Project

Project/Area Number 11J05457
Research Category

Grant-in-Aid for JSPS Fellows

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

Principal Investigator

山岸 光義  名古屋大学, 理学研究科, 特別研究員(DC1)

Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 2013: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2012: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2011: ¥700,000 (Direct Cost: ¥700,000)
Keywords赤外線 / 「あかり」衛星 / 銀河 / 物質進化
Research Abstract

本年度は主に、「あかり」衛星によって取得された近赤外線スペクトル(波長2.5-5.0μm)を用いて、近傍銀河に存在している星間氷の研究を行った。星間氷は、惑星における海や、有機分子などの複雑な分子の元になると考えられており、物質の進化や生命の誕生を考える上で、非常に重要な物質である。まず、前年度から準備を行っていた投稿論文を完成、発表した。論文では、近傍銀河M82内において、H_2O氷とCO_2氷の空間分布が異なっており、銀河内の大きなスケールでCO_2/H_2O比が変化していることを明らかにした。さらに、CO_2/H_2O比は星間輻射場の硬さと正の相関があることを示した。その原因として、大質量星形成に伴って起きる超新星爆発が、宇宙線を加速し、分子雲内で紫外線を生成、CO_2氷の生成に寄与している、という可能性を議論した。
次に、「あかり」衛星で近赤外線スペクトルが得られている全ての近傍銀河(z<0.03、全158天体、1031領域)に対して、上記のCO_2/H_2O比を用いた議論を拡張した。まず、全スペクトルに対してH_2O氷、CO_2氷の探査を行ったところ、H_2O氷は30天体中の125領域、CO_2氷は12天体中の54領域から検出された。このサンプルを用いて、M82の場合と同様に、CO_2/H_2O比と星間輻射場の関係を調べた所、銀河ごとに系統的に関係が異なっていること、つまり、星間輻射場以外にも、CO_2/H_2O比を決めるパラメータが存在することがわかった。さらに議論を行ったところ、CO_2/H_2O比は銀河の比星形成率と正の相関があることがわかった。つまり、銀河の星形成年齢が若く、活発であるほど、銀河内のCO_2/H_2O比は高いことを示している。一連の研究によって、私はCO_2/H_2O比が銀河内の紫外線輻射環境、および銀河の星形成進化段階と関係があるということを世界で初めて明らかにした。以上の内容を、博士論文としてまとめ、学位を取得した。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

近赤外線帯に存在している氷の吸収スペクトルフィーチャーに注目し、氷の存在量が銀河の星形成進化と関係していることを明らかにした。一連の研究の集大成として、学位論文をまとめた。

Strategy for Future Research Activity

本研究では、近傍銀河に対してCO_2/H_2O比の振る舞いを調べ、超新星爆発がCO_2氷生成に寄与している可能性を議論した。そこで次のステップとしては、銀河系内の星形成領域をターゲットにした、同様の解析が考えられる。銀河系内の超新星残骸に対しては、距離、年齢が詳しく調べられているものが多いので、それらをパラメータとして、CO_2/H_2O比との相関を調べることで、超新星爆発がCO_2氷生成に与える影響を、より直接的に検証することができると考えられる。

Report

(3 results)
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (40 results)

All 2014 2013 2012 2011

All Journal Article (22 results) (of which Peer Reviewed: 17 results,  Open Access: 2 results) Presentation (18 results)

  • [Journal Article] AKARI observations of interstellar dust grains in our Galaxy and nearby galaxies2014

    • Author(s)
      H. Kaneda
    • Journal Title

      Planetary and Space Science

      Volume: (印刷中)(in press)

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Difference in the Spatial Distribution between H2O and CO2 Ices in M 82 Found with AKARI2013

    • Author(s)
      M. Yamagishi
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 773 Issue: 2 Pages: L37-L37

    • DOI

      10.1088/2041-8205/773/2/l37

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Relation of the PAH 3.3 μm Feature with Star-forming Activity for Galaxies with a Wide Range of Infrared Luminosity2013

    • Author(s)
      R. Yamada
    • Journal Title

      Publications of the Astronomical Society of Japan.

      Volume: 65 Issue: 5 Pages: 103-117

    • DOI

      10.1093/pasj/65.5.103

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Large-scale mapping of the massive star-forming region RCW 38 in the [CII] and PAH emission2013

    • Author(s)
      H. Kaneda
    • Journal Title

      Astronomy & Astrophysics

      Volume: 556 Pages: 92-100

    • DOI

      10.1051/0004-6361/201321614

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] AKARI Observations of Interstellar Polycyclic Aromatic Hydrocarbons2013

    • Author(s)
      D. Ishihara
    • Journal Title

      LPI Contributions

      Volume: 1776 Pages: 1048-1048

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Processing of Interstellar Dust Grains in Galaxies Revealed by AKARI2013

    • Author(s)
      H. Kaneda
    • Journal Title

      Proceedings of the International Astronomical Union

      Volume: 292 Issue: S292 Pages: 271-274

    • DOI

      10.1017/s1743921313001348

    • Related Report
      2012 Annual Research Report
  • [Journal Article] AKARI near-infrared spectroscopy of the aromatic and aliphatic hydrocarbon emission features in the galactic superwind of M 822012

    • Author(s)
      M. Yamagishi
    • Journal Title

      Astronomy & Astrophysics

      Volume: 541 Pages: 10-10

    • DOI

      10.1051/0004-6361/201218904

    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Systematic Study of Interstellar Ices in Nearby Galaxies2012

    • Author(s)
      M. Yamagishi
    • Journal Title

      Publication of Korean Astronomical Society

      Volume: 27 Issue: 4 Pages: 249-252

    • DOI

      10.5303/pkas.2012.27.4.249

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Processing of Polycyclic Aromatic Hydrocarbons in Molecular-Loop Regions near the Galactic Center Revealed by AKARI2012

    • Author(s)
      H. Kaneda
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 64

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Central Region of the Barred Spiral Galaxy NGC 1097 Probed by AKARI Near-infrared Spectroscopy2012

    • Author(s)
      T. Kondo
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 751 Issue: 1 Pages: 18-21

    • DOI

      10.1088/2041-8205/751/1/l18

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The 3.3 Micron PAH Emission of the Mid-Infrared Excess Galaxies Discovered by the Akari Mid-Infrared All-Sky Survey2012

    • Author(s)
      R. Yamada
    • Journal Title

      Publication of Korean Astronomical Society

      Volume: 27 Issue: 4 Pages: 299-300

    • DOI

      10.5303/pkas.2012.27.4.299

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Survey of Dusty Active Galactic Nuclei Based on the Mid-Infrared All-Sky Survey Catalog2012

    • Author(s)
      S. Oyabu
    • Journal Title

      Publication of Korean Astronomical Society

      Volume: 27 Issue: 4 Pages: 265-270

    • DOI

      10.5303/pkas.2012.27.4.265

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Properties of Dust in Early-Type Galaxies Based on the All-Sky Data and Near-Infrared Spectra2012

    • Author(s)
      T. Mori
    • Journal Title

      Publication of Korean Astronomical Society

      Volume: 27 Issue: 4 Pages: 263-264

    • DOI

      10.5303/pkas.2012.27.4.263

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Central Region of the Barred Spiral Galaxy NGC 1097 Probed by Akari Near-Infrared Spectroscopy2012

    • Author(s)
      T. Kondo
    • Journal Title

      Publication of Korean Astronomical Society

      Volume: 27 Issue: 4 Pages: 257-258

    • DOI

      10.5303/pkas.2012.27.4.257

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Processing of Interstellar Dust Grains in Galaxies2012

    • Author(s)
      H. Kaneda
    • Journal Title

      Publication of Korean Astronomical Society

      Volume: 27 Issue: 4 Pages: 237-242

    • DOI

      10.5303/pkas.2012.27.4.237

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Experimental and numerical study of stitching interferometry for the optical testing of the SPICA Telescope2012

    • Author(s)
      H. Kaneda
    • Journal Title

      Proceedings of the SPIE

      Volume: 8442 Pages: 1-6

    • DOI

      10.1117/12.926879

    • Related Report
      2012 Annual Research Report
  • [Journal Article] Summary of observations of the infrared camera (IRC) onboard AKARI2012

    • Author(s)
      T.Onaka
    • Journal Title

      Proceedings of the SPIE

      Volume: 8442 Pages: 13-13

    • DOI

      10.1117/12.926717

    • Related Report
      2012 Annual Research Report
  • [Journal Article] Dust and PAHs in X-ray plasma of elliptical galaxies2012

    • Author(s)
      H. Kaneda
    • Journal Title

      Proceedings of the International Astronomical Union

      Volume: 284 Issue: S284 Pages: 254-258

    • DOI

      10.1017/s1743921312009192

    • Related Report
      2012 Annual Research Report
  • [Journal Article] Processing of polycyclic aromatic hydrocarbons in molecular-loop regions near the Galactic center revealed by AKARI2012

    • Author(s)
      金田英宏
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 64

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Properties of Dust and PAHs in the Hot Plasma of the Elliptical Galaxy NGC 4125 Revealed with AKARI and Spitzer Space Telescope2011

    • Author(s)
      金田英宏
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 63 Pages: 601-615

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of High-Energy Ionizing Particles on the Si:As Mid-Infrared Detector Array on Board the AKARI Satellite2011

    • Author(s)
      毛利彰男
    • Journal Title

      Publications of the Astronomical Society of the Pacific

      Volume: 123 Issue: 903 Pages: 561-567

    • DOI

      10.1086/659865

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] AKARI Near-infrared Spectroscopic Observations of Interstellar Ices in the Edge-on Starburst Galaxy NGC 2532011

    • Author(s)
      山岸光義
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 731 Issue: 1 Pages: 20-24

    • DOI

      10.1088/2041-8205/731/1/l20

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] [FeII], Paβナローバンドフィルターを用いた近傍銀河NGC1097の観測2014

    • Author(s)
      山岸 光義
    • Organizer
      IRSF勉強会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2014-03-24
    • Related Report
      2013 Annual Research Report
  • [Presentation] An Observational Study of Interstellar Ices in Nearby Galaxies with AKARI Near-Infrared Spectroscopy2014

    • Author(s)
      山岸 光義
    • Organizer
      IR group seminar
    • Place of Presentation
      TIFR(インド〉
    • Year and Date
      2014-03-21
    • Related Report
      2013 Annual Research Report
  • [Presentation] Difference in the spatial distribution between H2O and CO2 ices in M82 found with AKARI2013

    • Author(s)
      山岸 光義
    • Organizer
      The Korean Astronomical Society Fall Meeting
    • Place of Presentation
      木浦現代ホテル(韓国)
    • Year and Date
      2013-10-10
    • Related Report
      2013 Annual Research Report
  • [Presentation] Study of the ice-forming interstellar environment in nearby galaxies with AKARI2013

    • Author(s)
      山岸 光義
    • Organizer
      Phases of the ISM-MPIA Summer Conference 2013
    • Place of Presentation
      MPIA(ドイツ)
    • Year and Date
      2013-07-29
    • Related Report
      2013 Annual Research Report
  • [Presentation] Study of the ice-forming interstellar environment in nearby galaxies with AKARI2013

    • Author(s)
      山岸 光義
    • Organizer
      SPICA Science Conference 2013
    • Place of Presentation
      東京大学
    • Year and Date
      2013-06-18
    • Related Report
      2013 Annual Research Report
  • [Presentation] ALMAで探るNGC1097におけるダスト破壊2013

    • Author(s)
      山岸光義
    • Organizer
      ALMAで探る遠方・近傍宇宙の赤外線銀河研究の新展開
    • Place of Presentation
      宇宙科学研究所
    • Year and Date
      2013-03-26
    • Related Report
      2012 Annual Research Report
  • [Presentation] ALMAを使った分子雲電離度の測定2013

    • Author(s)
      山岸光義
    • Organizer
      ALMA観測で押さえる銀河の基本観測量とその理解
    • Place of Presentation
      国立天文台
    • Year and Date
      2013-02-25
    • Related Report
      2012 Annual Research Report
  • [Presentation] 「あかり」を用いた近傍銀河に存在する星間氷の探査2012

    • Author(s)
      山岸光義
    • Organizer
      CPSセミナー
    • Place of Presentation
      神戸大学(招待講演)
    • Year and Date
      2012-12-19
    • Related Report
      2012 Annual Research Report
  • [Presentation] 「あかり」近赤外線分光観測で探る、近傍銀河における星間氷の吸収とダスト減光の関係2012

    • Author(s)
      山岸光義
    • Organizer
      第30回Grain Formation Workshop/平成24年度銀河のダスト研究会
    • Place of Presentation
      神戸大学
    • Year and Date
      2012-11-30
    • Related Report
      2012 Annual Research Report
  • [Presentation] Systematic study of interstellar ices in nearby galaxies2012

    • Author(s)
      山岸光義
    • Organizer
      Workshop on Interstellar Matter 2012
    • Place of Presentation
      北海道大学
    • Year and Date
      2012-10-17
    • Related Report
      2012 Annual Research Report
  • [Presentation] 「あかり」近赤外線分光観測で探る、近傍銀河における星間氷の吸収とダスト減光の関係2012

    • Author(s)
      山岸光義
    • Organizer
      日本天文学会 秋季年会
    • Place of Presentation
      大分大学
    • Year and Date
      2012-09-19
    • Related Report
      2012 Annual Research Report
  • [Presentation] Processing of hydrocarbon grains and formation oficy grain mantles in starburst galaxies2012

    • Author(s)
      山岸光義
    • Organizer
      3rd Workshop of Nucleation Related to Cosmic Dust & its contribution to the organic formation in 4.6billion year ago
    • Place of Presentation
      東北大学
    • Year and Date
      2012-07-23
    • Related Report
      2012 Annual Research Report
  • [Presentation] ALMA observations of the ice-rich ISM in NGC253 found with AKARI2012

    • Author(s)
      山岸光義
    • Organizer
      ALMAワークショップ「近傍銀河」
    • Place of Presentation
      国立天文台
    • Year and Date
      2012-06-27
    • Related Report
      2012 Annual Research Report
  • [Presentation] 「あかり」を用いた近傍銀河に存在する星間氷の探査2012

    • Author(s)
      山岸光義
    • Organizer
      日本天文学会春季年会
    • Place of Presentation
      龍谷大学
    • Year and Date
      2012-03-22
    • Related Report
      2011 Annual Research Report
  • [Presentation] Systematic study of interstellar ices in nearby galaxies2012

    • Author(s)
      山岸光義
    • Organizer
      The Second AKARI Conference : Legacy of AKARI : A Panoramic View of the Dusty Universe
    • Place of Presentation
      ラマダプラザ済州ホテル(韓国)
    • Year and Date
      2012-02-28
    • Related Report
      2011 Annual Research Report
  • [Presentation] Systematic study of interstellar ices in nearby galaxies2011

    • Author(s)
      山岸光義
    • Organizer
      あかりによる我々の銀河系及び系外銀河の星間物質の研究会
    • Place of Presentation
      東京大学
    • Year and Date
      2011-12-15
    • Related Report
      2011 Annual Research Report
  • [Presentation] 「あかり」を用いた近傍銀河に存在する氷の探査2011

    • Author(s)
      山岸光義
    • Organizer
      第29回Grain Formation Workshop、平成23年度銀河のダスト研究会
    • Place of Presentation
      神戸大学
    • Year and Date
      2011-11-10
    • Related Report
      2011 Annual Research Report
  • [Presentation] 「あかり」近赤外線分光観測で探る近傍銀河NGC253内の氷の分布2011

    • Author(s)
      山岸光義
    • Organizer
      日本天文学会秋季年会
    • Place of Presentation
      鹿児島大学
    • Year and Date
      2011-09-20
    • Related Report
      2011 Annual Research Report

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Published: 2011-12-12   Modified: 2024-03-26  

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