Revealing the origin and properties of the energy sources in local luminous infrared galaxies with a next generation space telescope

2022 Fiscal Year Annual Research Report

• Project/Area Number: 21H01129
• Allocation Type: Single-year Grants
• 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): 2021-04-01 – 2025-03-31
• Keywords: 赤外線天文学 / 赤外線銀河 / 銀河形成 / 銀河進化

Outline of Annual Research Achievements

本研究の主軸であるジェームズ・ウェッブ宇宙望遠鏡の打ち上げの遅れにより当初の予定よりも遅延したが、7月中旬に最初の科学観測データを取得することができた。今年度は主に撮像観測データを用い、4つの近傍宇宙にある赤外線銀河のターゲットのうち、2つの銀河を中心にデータ補正および解析を行った。予備研究での経験を活かし、データ補正をスムーズに進めることができ、データ解析を効率よく進展させることができた。
まず、1つの目の銀河では、ジェームズ・ウェッブ宇宙望遠鏡の高空間分解能を活かし、赤外線銀河のエネルギー源の位置を特定することができた。この銀河は銀河中心部から外れた場所にエネルギー源が存在することが先行研究で示唆されていたが、その位置を精度良く決定づけることはできなかった。今回の研究では、このエネルギー源の位置を初めて決定づけることができ、可視光線では全く放射しておらず、近赤外線でも比較的暗い天体であることを発見した。つまり、塵に隠された現象は可視光線ではもちろん、例え近赤外線であっても特定できないことがあることを意味し、赤外線探査の重要性を示した重要な発見となった。
また、もう一方の銀河では、中心部にブラックホールが存在するため、そこからの強力な放射を減算する必要があったが、予備研究でこの手法を確立していたおかげで大きな困難なく実行することができた。これにより、ブラックホール周辺にある星形成領域の抽出を効率よく行うことができた。このプロジェクトでも望遠鏡がもつ世界最高の空間分解能と感度により、60もの星形成領域の抽出に成功した。これにより、ハッブル宇宙望遠鏡を用いた先行研究で発見された領域数を倍増させたことができた。これらの新たに発見された領域は塵に隠された非常に若い星形成領域であることを突き止め、ブラックホール周りの星形成を理解を深める新たな知見を得ることができた。

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の打ち上げに遅れがあったが、7月から科学運用が無事に始まったことにより研究を進めることができた。特に、前年度および本年度の7月以前に行った予備研究が活かされ、データ入手直後からスムーズに取り組めたことにより、短時間で査読付き論文を海外論文誌にて出版することもできた。また、新型コロナウイルス感染症拡大防止のための水際対策により昨年度は実現できなった、海外共同研究者を直接訪問し現地打ち合わせを、今年度は実現させることができたことも順調な研究進展に貢献した。

Strategy for Future Research Activity

本年度は主に撮像観測データを用いた研究を中心に行ったが、来年度は分光観測データにも取り組み、全ての観測データの解析を完了させる。計画通りに、ダスト減光量の測定や星形成やブラックホールの規模を算定する。また、面分光観測という特徴を活かし、星形成やブラックホールの周辺環境も調査する。得られた成果をもとに国際会議で研究発表も行い、さらなる研究の進展に活かす心づもりである。

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/University of Virginia/University of California(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: California Institute of Technology/University of Virginia/University of California
  • # of Other Institutions: 5
• [Int'l Joint Research] FORTH/University of Crete(ギリシャ)
  • Country Name: GREECE
  • Counterpart Institution: FORTH/University of Crete
• [Int'l Joint Research] Leiden University(オランダ)
  • Country Name: NETHERLANDS
  • Counterpart Institution: Leiden University
• [Int'l Joint Research] European Space Agency/Universitat de Barcelona(スペイン)
  • Country Name: SPAIN
  • Counterpart Institution: European Space Agency/Universitat de Barcelona
• [Int'l Joint Research] Chalmers University of Technology(スウェーデン)
  • Country Name: SWEDEN
  • Counterpart Institution: Chalmers University of Technology
• [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] 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, et al.
  • 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] Star-forming Regions in the Starburst Ring of NGC 7469 (2023)
  • Author(s): Thomas Bohn, Hanae Inami, and GOALS Team
  • Organizer: First Science Results from JWST
  • 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
• [Presentation] First JWST results of local luminous infrared galaxies from GOALS (2022)
  • Author(s): Hanae Inami
  • Organizer: The 9th Galaxy Evolution Workshop
  • Int'l Joint Research
• [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