宇宙進化を決定づける赤外線銀河のガス・ダストと星形成メカニズムの解明

2022 Fiscal Year Research-status Report

• Project/Area Number: 19K23462
• Research Institution: Hiroshima University
• Principal Investigator: 稲見 華恵 広島大学, 宇宙科学センター, 助教 (20841943)
• Project Period (FY): 2019-08-30 – 2024-03-31
• Keywords: 銀河進化 / 銀河形成 / 赤外線 / 星形成 / 星間ガス / 星間ダスト

Outline of Annual Research Achievements

打ち上げが遅れていたジェームズ・ウェッブ宇宙望遠鏡の科学運用が2022年7月に開始され、本研究のもう1つの軸となる研究を進めることができた。特に、近傍宇宙にある高光度赤外線銀河を世界最高の感度および空間分解能で観測し、激しい星形成および巨大ブラックホール周辺でのダストとガスの性質を調査した。
まず、合体途中の銀河のエネルギー源の正確な位置を世界で初めて突き止めた。このエネルギー源は宇宙塵(ダスト)に隠されハッブル宇宙望遠鏡でさえも観測することはできず、今回ジェームズ・ウェッブ宇宙望遠鏡を用いて初めてその場所を特定することができた。コンパクトながら莫大なエネルギーをもつことは申請者が先行研究で明らかにしていたが、今回の研究ではこのエネルギー源の大きさに強い上限をつけることができ、銀河全体からのエネルギーのうち多ければ70%はこの領域から放射されていることが分かった。この成果について、所属大学から和文と英文によるプレスリリース配信を行った。
もう1つの観測対象の銀河では、巨大ブラックホール周りにある星形成ディスクの観測を行った。このディスクには30ほどの星形成領域がハッブル宇宙望遠鏡で見つかっていたが、ジェームズ・ウェッブ宇宙望遠鏡を用いたことでその数を2倍に増やした。これらの新しく発見され星形成領域の色指数を求め、星形成進化モデルと比較した結果、これらの星形成領域は全て多くのダストを持ち、非常に若い星形成領域であることが分かった。

Current Status of Research Progress

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

Reason

ジェームズ・ウェッブ宇宙望遠鏡がようやく打ち上がり、本研究で目指す銀河のガスおよびダストの性質を調査する手立てがたった。データも無事に取得し、予備研究のおかげでデータ解析もスムーズに進んだ。実際に論文を国際論文誌の投稿、受理された。新型コロナウイルス感染症拡大による影響も緩和され、ハイブリッド方式による研究交流も再開されつつあり議論もより活性化された。

Strategy for Future Research Activity

本年度は主に撮像観測データの解析に取り組んだが、今後は分光観測によりガスの運動、ダストの性質、エネルギー源の正体を明らかにする。また、ジェームズ・ウェッブ宇宙望遠鏡による観測が開始されたばかりで、今後より深いデータ解析を行う必要がある。特に、それぞれの銀河単独の調査に限らず、さまざまな銀河を横断した系統調査に取り組みたい。
更にプロジェクトを発展させ、ジェームズ・ウェッブ宇宙望遠鏡で得た成果とALMA望遠鏡で得た成果を組み合わせることにも取り組む。

Causes of Carryover

国内外での対面での学会や研究会の現地開催が完全に再開されなかったため、予定していた旅費や学会参加費の使用がなく、次年度使用額が生じた。2023年度からは現地参加をメインとする学会や研究会の開催が散見されるため、これまでの研究結果を学会・研究会の開催地現地にて発表し、成果を広く発表する機会を設け、次なる研究発展に継続できるよう研究経費を使用する。

Remarks

上記(2)のタイトルは正しくは 'Engine' of luminous merging galaxies pinpointed for the first time であるが50文字の文字制限にため略して記載している。

Research Products

• [Int'l Joint Research] California Institute of Technology/National Radio Astronomy Observatory/Space Telescope Science Institute(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: California Institute of Technology/National Radio Astronomy Observatory/Space Telescope Science Institute
  • # of Other Institutions: 10
• [Int'l Joint Research] University of Crete(ギリシャ)
  • Country Name: GREECE
  • Counterpart Institution: University of Crete
• [Int'l Joint Research] ASTRO 3D/Monash University(オーストラリア)
  • Country Name: AUSTRALIA
  • Counterpart Institution: ASTRO 3D/Monash University
• [Int'l Joint Research] Leiden University(オランダ)
  • Country Name: NETHERLANDS
  • Counterpart Institution: Leiden University
• [Int'l Joint Research] Universitat de Barcelona(スペイン)
  • Country Name: SPAIN
  • Counterpart Institution: Universitat de Barcelona
• [Int'l Joint Research]
  • # of Other Countries: 2
• [Journal Article] The main sequence of star-forming galaxies across cosmic times (2023)
  • Author(s): Popesso, Concas, Cresci, Belli, Rodighiero, Inami, Dickinson, Ilbert, Pannella, and Elbaz
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 519 Pages: 1526-1544
  • DOI: 10.1093/mnras/stac3214
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The ALMA REBELS survey: the dust-obscured cosmic star formation rate density at redshift 7 (2023)
  • Author(s): Algera, Inami, Oesch, Sommovigo, Bouwens, Topping, Schouws, Stefanon, Stark, Aravena, Barrufet, da Cunha, Dayal, Endsley, Ferrara, Fudamoto, Gonzalez, Graziani, Hodge, Hygate, de Looze, Nanayakkara, Schneider, and van der Werf
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 518 Pages: 6142-6157
  • DOI: 10.1093/mnras/stac3195
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] GOALS-JWST: Revealing the Buried Star Clusters in the Luminous Infrared Galaxy VV 114 (2023)
  • Author(s): Linden, Evans, Armus, Rich, Larson, Lai, Privon, U, Inami, Bohn, Song, Barcos-Munoz, Charmandaris, Medling, Stierwalt, Diaz-Santos, Boker, van der Werf, Aalto, Appleton, Brown, Hayward, Howell, Iwasawa, Kemper, Frayer, Law, Malkan, Marshall, Mazzarella, Murphy, Sanders, and Surace
  • Journal Title: The Astrophysical Journal Volume: 944 Pages: L55
  • DOI: 10.3847/2041-8213/acb335
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] GOALS-JWST: Pulling Back the Curtain on the AGN and Star Formation in VV 114 (2023)
  • Author(s): Rich, Aalto, Evans, Charmandaris, Privon, Lai, Inami, Linden, Armus, Diaz-Santos, Appleton, Barcos-Munoz, Boker, Larson, Law, Malkan, Medling, Song, U, van der Werf, Bohn, Brown, Finnerty, Hayward, Howell, Iwasawa, Kemper, Marshall, Mazzarella, McKinney, Muller-Sanchez, Murphy, Sanders, Soifer, Stierwalt, and Surace
  • Journal Title: The Astrophysical Journal Volume: 944 Pages: L50
  • DOI: 10.3847/2041-8213/acb2b8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Correction to: The ALMA REBELS Survey: dust continuum detections at z > 6.5 (2023)
  • Author(s): Inami, Algera, Schouws, Sommovigo, Bouwens, Smit, Stefanon, Bowler, Endsley, Ferrara, Oesch, Stark, Aravena, Barrufet, da Cunha, Dayal, De Looze, Fudamoto, Gonzalez, Graziani, Hodge, Hygate, Nanayakkara, Pallottini, Riechers, Schneider, Topping, and van der Werf
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 518 Pages: 3702-3702
  • DOI: 10.1093/mnras/stac3053
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] GOALS-JWST: Mid-infrared Spectroscopy of the Nucleus of NGC 7469 (2023)
  • Author(s): Armus, Lai, U, Larson, Diaz-Santos, Evans, Malkan, Rich, Medling, Law, Inami, Muller-Sanchez, Charmandaris, van der Werf, Stierwalt, Linden, Privon, Barcos-Munoz, Hayward, Song, Appleton, Aalto, Bohn, Boker, Brown, Finnerty, Howell, Iwasawa, Kemper, Marshall, Mazzarella, McKinney, Murphy, Sanders, and Surace
  • Journal Title: The Astrophysical Journal Volume: 942 Pages: L37
  • DOI: 10.3847/2041-8213/acac66
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] GOALS-JWST: NIRCam and MIRI Imaging of the Circumnuclear Starburst Ring in NGC 7469 (2023)
  • Author(s): Bohn, Inami, Diaz-Santos, Armus, Linden, U, Surace, Larson, Evans, Hoshioka, Lai, Song, Mazzarella, Barcos-Munoz, Charmandaris, Howell, Medling, Privon, Rich, Stierwalt, Aalto, Boker, Brown, Iwasawa, Malkan, van der Werf, Appleton, Hayward, Kemper, Law, Marshall, Murphy, and Sanders
  • Journal Title: The Astrophysical Journal Volume: 942 Pages: L36
  • DOI: 10.3847/2041-8213/acab61
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The REBELS ALMA Survey: efficient Ly-alpha transmission of UV-bright z~7 galaxies from large velocity offsets and broad line widths (2022)
  • Author(s): Endsley, Stark, Bouwens, Schouws, Smit, Stefanon, Inami, Bowler, Oesch, Gonzalez, Aravena, da Cunha, Dayal, Ferrara, Graziani, Nanayakkara, Pallottini, Schneider, Sommovigo, Topping, van der Werf, and Hutter
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 517 Pages: 5642-5659
  • DOI: 10.1093/mnras/stac3064
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] GOALS-JWST: Tracing AGN Feedback on the Star-forming Interstellar Medium in NGC 7469 (2022)
  • Author(s): Lai, Armus, U, Diaz-Santos, Larson, Evans, Malkan, Appleton, Rich, Muller-Sanchez, Inami, Bohn, McKinney, Finnerty, Law, Linden, Medling, Privon, Song, Stierwalt, van der Werf, Barcos-Munoz, Smith, Togi, Aalto, Boker, Charmandaris, Howell, Iwasawa, Kemper, Mazzarella, Murphy, Brown, Hayward, Marshall, Sanders, Surace
  • Journal Title: The Astrophysical Journal Volume: 941 Pages: L36
  • DOI: 10.3847/2041-8213/ac9ebf
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] GOALS-JWST: Hidden Star Formation and Extended PAH Emission in the Luminous Infrared Galaxy VV 114 (2022)
  • Author(s): Evans, Frayer, Charmandaris, Armus, Inami, Surace, Linden, Soifer, Diaz-Santos, Larson, Rich, Song, Barcos-Munoz, Mazzarella, Privon, U, Medling, Boker, Aalto, Iwasawa, Howell, van der Werf, Appleton, Bohn, Brown, Hayward, Hoshioka, Kemper, Lai, Law, Malkan, Marshall, Murphy, Sanders, and Stierwalt
  • Journal Title: The Astrophysical Journal Volume: 940 Pages: L8
  • DOI: 10.3847/2041-8213/ac9971
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] GOALS-JWST: Unveiling Dusty Compact Sources in the Merging Galaxy IIZw096 (2022)
  • Author(s): Inami, Surace, Armus, Evans, Larson, Barcos-Munoz, Stierwalt, Mazzarella, Privon, Song, Linden, Hayward, Boker, U, Bohn, Charmandaris, Diaz-Santos, Howell, Lai, Medling, Rich, Aalto, Appleton, Brown, Hoshioka, Iwasawa, Kemper, Law, Malkan, Marshall, Murphy, Sanders, and van der Werf
  • Journal Title: The Astrophysical Journal Volume: 940 Pages: L6
  • DOI: 10.3847/2041-8213/ac9389
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] GOALS-JWST: Resolving the Circumnuclear Gas Dynamics in NGC 7469 in the Mid-infrared (2022)
  • Author(s): U, Lai, Bianchin, Remigio, Armus, Larson, Diaz-Santos, Evans, Stierwalt, Law, Malkan, Linden, Song, van der Werf, Gao, Privon, Medling, Barcos-Munoz, Hayward, Inami, Rich, Aalto, Appleton, Bohn, Boker, Brown, Charmandaris, Finnerty, Howell, Iwasawa, Kemper, Marshall, Mazzarella, McKinney, Muller-Sanchez, Murphy, et al.
  • Journal Title: The Astrophysical Journal Volume: 940 Pages: L5
  • DOI: 10.3847/2041-8213/ac961c
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Characterizing Compact 15-33 GHz Radio Continuum Sources in Local U/LIRGs (2022)
  • Author(s): Song, Linden, Evans, Barcos-Munoz, Murphy, Momjian, Diaz-Santos, Larson, Privon, Huang, Armus, Mazzarella, U, Inami, Charmandaris, Ricci, Emig, McKinney, Yoon, Kunneriath, Lai, Rodas-Quito, Saravia, Gao, Meynardie, and Sanders
  • Journal Title: The Astrophysical Journal Volume: 940 Pages: 52
  • DOI: 10.3847/1538-4357/ac923b
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Investigating the Effect of Galaxy Interactions on Star Formation at 0.5 < z < 3.0 (2022)
  • Author(s): Shah, Kartaltepe, Magagnoli, Cox, Wetherell, Vanderhoof, Cooke, Calabro, Chartab, Conselice, Croton, de la Vega, Hathi, Ilbert, Inami, Kocevski, Koekemoer, Lemaux, Lubin, Mantha, Marchesi, Martig, Moreno, Pampliega, Patton, Salvato, and Treister
  • Journal Title: The Astrophysical Journal Volume: 940 Pages: 4
  • DOI: 10.3847/1538-4357/ac96eb
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The ALMA REBELS Survey: specific star formation rates in the reionization era (2022)
  • Author(s): Topping, Stark, Endsley, Bouwens, Schouws, Smit, Stefanon, Inami, Bowler, Oesch, Gonzalez, Dayal, da Cunha, Algera, van der Werf, Pallottini, Barrufet, Schneider, De Looze, Sommovigo, Whitler, Graziani, Fudamoto, and Ferrara
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 516 Pages: 975-991
  • DOI: 10.1093/mnras/stac2291
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The ALMA REBELS Survey: dust continuum detections at z > 6.5 (2022)
  • Author(s): Inami, Algera, Schouws, Sommovigo, Bouwens, Smit, Stefanon, Bowler, Endsley, Ferrara, Oesch, Stark, Aravena, Barrufet, da Cunha, Dayal, De Looze, Fudamoto, Gonzalez, Graziani, Hodge, Hygate, Nanayakkara, Pallottini, Riechers, Schneider, Topping, and van der Werf
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 515 Pages: 3126-3143
  • DOI: 10.1093/mnras/stac1779
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The ALMA REBELS Survey: The Cosmic H I Gas Mass Density in Galaxies at z~7 (2022)
  • Author(s): Heintz, Oesch, Aravena, Bouwens, Dayal, Ferrara, Fudamoto, Graziani, Inami, Sommovigo, Smit, Stefanon, Topping, Pallottini, and van der Werf
  • Journal Title: The Astrophysical Journal Volume: 934 Pages: L27
  • DOI: 10.3847/2041-8213/ac8057
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The ALMA REBELS Survey: Average [C II] 158um Sizes of Star-forming Galaxies from z 7 to z 4 (2022)
  • Author(s): Fudamoto, Smit, Bowler, Oesch, Bouwens, Stefanon, Inami, Endsley, Gonzalez, Schouws, Stark, Algera, Aravena, Barrufet, da Cunha, Dayal, Ferrara, Graziani, Hodge, Hygate, Inoue, Nanayakkara, Pallottini, Pizzati, Schneider, Sommovigo, Sugahara, Topping, van der Werf, Bethermin, Cassata, Dessauges-Zavadsky, Ibar, et al.
  • Journal Title: The Astrophysical Journal Volume: 934 Pages: 144
  • DOI: 10.3847/1538-4357/ac7a47
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The ALMA REBELS Survey: cosmic dust temperature evolution out to z 7 (2022)
  • Author(s): Sommovigo, Ferrara, Pallottini, Dayal, Bouwens, Smit, da Cunha, De Looze, Bowler, Hodge, Inami, Oesch, Endsley, Gonzalez, Schouws, Stark, Stefanon, Aravena, Graziani, Riechers, Schneider, van der Werf, Algera, Barrufet, Fudamoto, Hygate, Labbe, Li, Nanayakkara, and Topping
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 513 Pages: 3122-3135
  • DOI: 10.1093/mnras/stac302
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Measuring Star Formation and Black Hole Accretion Rates in Tandem Using Mid-infrared Spectra of Local Infrared Luminous Galaxies (2022)
  • Author(s): Stone, Pope, McKinney, Armus, Diaz-Santos, Inami, Kirkpatrick, and Stierwalt
  • Journal Title: The Astrophysical Journal Volume: 934 Pages: 27
  • DOI: 10.3847/1538-4357/ac778b
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Reionization Era Bright Emission Line Survey: Selection and Characterization of Luminous Interstellar Medium Reservoirs in the z > 6.5 Universe (2022)
  • Author(s): Bouwens, Smit, Schouws, Stefanon, Bowler, Endsley, Gonzalez, Inami, Stark, Oesch, Hodge, Aravena, da Cunha, Dayal, de Looze, Ferrara, Fudamoto, Graziani, Li, Nanayakkara, Pallottini, Schneider, Sommovigo, Topping, van der Werf, Algera, Barrufet, Hygate, Labbe, Riechers, and Witstok
  • Journal Title: The Astrophysical Journal Volume: 931 Pages: 160
  • DOI: 10.3847/1538-4357/ac5a4a
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The ALMA REBELS survey: the dust content of z~7 Lyman break galaxies (2022)
  • Author(s): Dayal, Ferrara, Sommovigo, Bouwens, Oesch, Smit, Gonzalez, Schouws, Stefanon, Kobayashi, Bremer, Algera, Aravena, Bowler, da Cunha, Fudamoto, Graziani, Hodge, Inami, De Looze, Pallottini, Riechers, Schneider, Stark, and Endsley
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 512 Pages: 989-1002
  • DOI: 10.1093/mnras/stac537
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The ALMA REBELS Survey. Epoch of Reionization giants: Properties of dusty galaxies at z~7 (2022)
  • Author(s): Ferrara, Sommovigo, Dayal, Pallottini, Bouwens, Gonzalez, Inami, Smit, Bowler, Endsley, Oesch, Schouws, Stark, Stefanon, Aravena, da Cunha, De Looze, Fudamoto, Graziani, Hodge, Riechers, Schneider, Algera, Barrufet, Hygate, Labbe, Li, Nanayakkara, Topping, and van der Werf
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 512 Pages: 58-72
  • DOI: 10.1093/mnras/stac460
  • Peer Reviewed / Int'l Joint Research
• [Presentation] ISM conditions of (dusty) star-forming galaxies at high redshift (2023)
  • Author(s): Hanae Inami
  • Organizer: PRIMA 2023 Community Workshop
  • Int'l Joint Research
• [Presentation] First JWST results of local luminous infrared galaxies from GOALS (2023)
  • Author(s): Hanae Inami
  • Organizer: The 9th Galaxy Evolution Workshop
  • Int'l Joint Research
• [Presentation] Exploring the Early Universe with ALMA2030 (2023)
  • Author(s): Hanae Inami
  • Organizer: 宇電懇シンポジウム
  • Invited
• [Remarks] 【研究成果】ジェームズ・ウェッブ宇宙望遠鏡により合体銀河の巨大エネルギーを担う「エンジン」を特定
  • URL: https://www.hiroshima-u.ac.jp/hasc/news/75064
• [Remarks] 'Engine' of luminous merging galaxies pinpointed
  • URL: https://www.hiroshima-u.ac.jp/en/news/75233