Gas inflow processes from the Cosmic Web to galaxies during galaxy formation epoch

• Project/Area Number: 17KK0098
• Research Category: Fund for the Promotion of Joint International Research (Fostering Joint International Research)
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: National Astronomical Observatory of Japan
• Principal Investigator: 松田 有一 国立天文台, アルマプロジェクト, 助教 (20647268)
• Project Period (FY): 2018 – 2023
• Project Status: Completed (Fiscal Year 2023)
• Budget Amount: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
• Keywords: 遠方銀河 / 宇宙網 / 銀河形成 / ブラックホール形成 / 構造形成 / 初期宇宙 / データ解析 / 迷光解析 / 観測天文学 / 銀河間ガス / 銀河進化

Outline of Annual Research Achievements

100億年以上前の宇宙では、暗黒物質が作るリボンのようなフィラメント状の構造（宇宙網）に沿って通常物質（主にガス）も分布しており、それが銀河やブラックホールなどのもととなるガスの供給源であると考えられている。しかし、そのようなフィラメント状に分布するガスはあまり光を発しないため、これまでの観測では捉える事は難しかった。我々は、これまですばる望遠鏡、アルマ望遠鏡を含む世界中の巨大望遠鏡群を使って、形成期の銀河を繋ぐガスネットワーク構造の観測を進めてきた。本研究では、すばる望遠鏡の超広視野カメラ用に製作した特注光学フィルター（狭帯域フィルター）を使って、より広範囲でガスネットワークを観測して、銀河が形成される時代の宇宙における宇宙網の地図作成を行った。

具体的には、米国、英国、イタリア、カナダの研究者らとの国際共同研究として総観測時間98時間のすばるインテンシブプログラムを2021 年から開始し、2024年3月までに約8割の観測を完了させた。滞在先のカリフォルニア工科大学において、半年ごとに取得したデータの逐次解析と品質確認を進めたところ、当初の観測手法では、狭帯域フィルター画像に映り込む迷光を画像処理で除去できないことが明らかになった。そのため、迷光を除去することのできる新たな観測手法を考案し、その手法を用いて更なる観測を遂行した。また、多波長観測の一環として、カナダフランスハワイ望遠鏡による同じ領域をカバーする紫外線（U バンド）観測も同時並行で行った。

Research Products

• [Int'l Joint Research] カリフォルニア工科大学(米国) (2022)
  • Year and Date: 2022-04-14
• [Journal Article] UV and Lyα Halos of Lyα Emitters across Environments at z = 2.84 (2023)
  • Author(s): Kikuta Satoshi、Matsuda Yuichi、Inoue Shigeki、Steidel Charles C.、Cen Renyue、Zheng Zheng、Yajima Hidenobu、Momose Rieko、Imanishi Masatoshi、Komiyama Yutaka
  • Journal Title: The Astrophysical Journal Volume: 947 Issue: 2 Pages: 75-75
  • DOI: 10.3847/1538-4357/acbf30
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The JCMT SCUBA-2 Survey of the James Webb Space Telescope North Ecliptic Pole Time-Domain Field (2023)
  • Author(s): Hyun Minhee、Im Myungshin、Smail Ian R.、Cotton William D.、Birkin Jack E.、Kikuta Satoshi、Shim Hyunjin、Willmer Christopher N. A.、Condon James J.、Windhorst Rogier A.、Cohen Seth H.、Jansen Rolf A.、Ly Chun、Matsuda Yuichi、Fazio Giovanni G.、Swinbank A. M.、Yan Haojing
  • Journal Title: The Astrophysical Journal Supplement Series Volume: 264 Issue: 1 Pages: 19-19
  • DOI: 10.3847/1538-4365/ac9bf4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Where outflows meet inflows: gas kinematics in SSA22 Lyα blob 2 decoded by advanced radiative transfer modelling (2022)
  • Author(s): Li Zhihui、Steidel Charles C、Gronke Max、Chen Yuguang、Matsuda Yuichi
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 513 Issue: 3 Pages: 3414-3428
  • DOI: 10.1093/mnras/stac958
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] SILVERRUSH. IX. Lyα Intensity Mapping with Star-forming Galaxies at z = 5.7 and 6.6: A Possible Detection of Extended Lyα Emission at ?100 Comoving Kiloparsecs around and beyond the Virial-radius Scale of Galaxy Dark Matter Halos (2021)
  • Author(s): Kakuma, Ryota; Ouchi, Masami et al.
  • Journal Title: The Astrophysical Journal Volume: 916 Issue: 1 Pages: 22-30
  • DOI: 10.3847/1538-4357/ac0725
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] ALMA Observations of Lyα Blob 1: Multiple Major Mergers and Widely Distributed Interstellar Media (2021)
  • Author(s): Umehata Hideki、Smail Ian、Steidel Charles C.、Hayes Matthew、Scott Douglas、Swinbank A. M.、Ivison R. J.、Nagao Toru、Kubo Mariko、Nakanishi Kouichiro、Matsuda Yuichi、Ikarashi Soh、Tamura Yoichi、Geach J. E.
  • Journal Title: The Astrophysical Journal Volume: 918 Issue: 2 Pages: 69-69
  • DOI: 10.3847/1538-4357/ac1106
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A Massive Quiescent Galaxy Confirmed in a Protocluster at z = 3.09 (2021)
  • Author(s): Kubo Mariko、Umehata Hideki、Matsuda Yuichi、Kajisawa Masaru、Steidel Charles C.、Yamada Toru、Tanaka Ichi、Hatsukade Bunyo、Tamura Yoichi、Nakanishi Kouichiro、Kohno Kotaro、Lee Kianhong、Matsuda Keiichi
  • Journal Title: The Astrophysical Journal Volume: 919 Issue: 1 Pages: 6-6
  • DOI: 10.3847/1538-4357/ac0cf8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] FOREVER22: galaxy formation in protocluster regions (2021)
  • Author(s): Yajima Hidenobu、Abe Makito、Khochfar Sadegh、Nagamine Kentaro、Inoue Akio K、Kodama Tadayuki、Arata Shohei、Dalla-Vecchia Claudio、Fukushima Hajime、Hashimoto Takuya、Kashikawa Nobunari、Kubo Mariko、Li Yuexing、Matsuda Yuichi、Mawatari Ken、Ouchi Masami、Umehata Hideki
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 509 Issue: 3 Pages: 4037-4057
  • DOI: 10.1093/mnras/stab3092
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] FIR-luminous [C II] Emitters in the ALMA-SCUBA-2 COSMOS Survey (AS2COSMOS): The Nature of Submillimeter Galaxies in a 10 Comoving Megaparsec-scale Structure at z~4.6 (2021)
  • Author(s): Mitsuhashi, Matsuda, Smail, Hayatsu, Simpson, Swinbank, Umehata, Dudzeviciute, Birkin, Ikarashi, Chen, Tadaki, Yajima, Harikane, Inami, Chapman, Hatsukade, Iono, Bunker, Ao, Saito, Ueda, and Sakamoto
  • Journal Title: The Astrophysical Journal Volume: 907 Issue: 2 Pages: 122-122
  • DOI: 10.3847/1538-4357/abcc72
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] An ALMA/NOEMA survey of the molecular gas properties of high-redshift star-forming galaxies (2020)
  • Author(s): Birkin Jack E et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 501 Issue: 3 Pages: 3926-3950
  • DOI: 10.1093/mnras/staa3862
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] An ALMA survey of the brightest sub-millimetre sources in the SCUBA-2?COSMOS field (2020)
  • Author(s): Simpson J M et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 495 Issue: 3 Pages: 3409-3430
  • DOI: 10.1093/mnras/staa1345
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Large Population of ALMA Galaxies at z > 6 with Very High [O iii] 88 μm to [C ii] 158 μm Flux Ratios: Evidence of Extremely High Ionization Parameter or PDR Deficit? (2020)
  • Author(s): Harikane Yuichi、Ouchi Masami、Inoue Akio K.、Matsuoka Yoshiki、Tamura Yoichi、Bakx Tom、Fujimoto Seiji、Moriwaki Kana、Ono Yoshiaki、Nagao Tohru、Tadaki Ken-ichi、Kojima Takashi、Shibuya Takatoshi、Egami Eiichi、Ferrara Andrea、Gallerani Simona、Hashimoto Takuya、Kohno Kotaro、Matsuda Yuichi、Matsuo Hiroshi、et al.
  • Journal Title: The Astrophysical Journal Volume: 896 Issue: 2 Pages: 93-93
  • DOI: 10.3847/1538-4357/ab94bd
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Three-dimensional Distribution Map of H i Gas and Galaxies around an Enormous Lyα Nebula and Three QSOs at z = 2.3 Revealed by the H i Tomographic Mapping Technique (2020)
  • Author(s): Mukae S., Ouchi M., Cai Z., Lee K-G., and 20 coauthors including Suzuki, Nao
  • Journal Title: The Astrophysical Journal Volume: 896 Issue: 1 Pages: 45-45
  • DOI: 10.3847/1538-4357/ab8db7
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Enhancement of HI absorption associated with the z = 3.1 large-scale proto-cluster and characteristic structures with AGNs sculptured over Gpc scale in the SSA22 field (2019)
  • Author(s): Hayashino T、Inoue A K、Kousai K、Kashikawa N、Mawatari K、Matsuda Y、Tejos N、Prochaska J X、Iwata I、Noll S、Burgarella D、Yamada T、Akiyama M
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 484 Pages: 5868-5868
  • DOI: 10.1093/mnras/stz388
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The SCUBA-2 web survey: I. Observations of CO(3-2) in hyper-luminous QSO fields (2019)
  • Author(s): Hill Ryley、Chapman Scott C、Scott Douglas、Smail Ian、Steidel Charles C、Krips Melanie、Babul Arif、Berg Trystyn、Bertoldi Frank、Gao Yu、Lacaille Kevin、Matsuda Yuichi、Ross Colin、Rudie Gwen、Trainor Ryan
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 485 Issue: 1 Pages: 753-769
  • DOI: 10.1093/mnras/stz429
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Lyα view around a z = 2.84 hyperluminous QSO at a node of the cosmic web† (2019)
  • Author(s): Kikuta Satoshi、Matsuda Yuichi、Cen Renyue、Steidel Charles C、Yagi Masafumi、Hayashino Tomoki、Imanishi Masatoshi、Komiyama Yutaka、Momose Rieko、Saito Tomoki
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Issue: 3 Pages: 1-6
  • DOI: 10.1093/pasj/psz055
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] ALMA Observations of Molecular Gas in the Host Galaxy of AT2018cow (2019)
  • Author(s): Morokuma-Matsui Kana、Morokuma Tomoki、Tominaga Nozomu、Hatsukade Bunyo、Hayashi Masao、Tamura Yoichi、Matsuda Yuichi、Motogi Kazuhito、Niinuma Kotaro、Konishi Masahiro
  • Journal Title: The Astrophysical Journal Volume: 879 Issue: 1 Pages: L13-L13
  • DOI: 10.3847/2041-8213/ab2915
  • Peer Reviewed / Open Access
• [Journal Article] The East Asian Observatory SCUBA-2 Survey of the COSMOS Field: Unveiling 1147 Bright Sub-millimeter Sources across 2.6 Square Degrees (2019)
  • Author(s): Simpson J. M.、Smail Ian、Swinbank A. M.、Chapman S. C.、Chen Chian-Chou、Geach J. E.、Matsuda Y.、Wang R.、Wang Wei-Hao、Yang Y.、et al.
  • Journal Title: The Astrophysical Journal Volume: 880 Issue: 1 Pages: 43-43
  • DOI: 10.3847/1538-4357/ab23ff
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Gas filaments of the cosmic web located around active galaxies in a protocluster (2019)
  • Author(s): Umehata H.、Fumagalli M.、Smail I.、Matsuda Y.、Swinbank A. M.、Cantalupo S.、Sykes C.、Ivison R. J.、Steidel C. C.、Shapley A. E.、Vernet J.、Yamada T.、Tamura Y.、Kubo M.、Nakanishi K.、Kajisawa M.、Hatsukade B.、Kohno K.
  • Journal Title: Science Volume: 366 Issue: 6461 Pages: 97-100
  • DOI: 10.1126/science.aaw5949
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Multi-wavelength Properties of Radio- and Machine-learning-identified Counterparts to Submillimeter Sources in S2COSMOS (2019)
  • Author(s): Xia An Fang、Simpson J. M.、Smail Ian、Swinbank A. M.、Ma Cong、Liu Daizhong、Lang P.、Schinnerer E.、Karim A.、Magnelli B.、Leslie S.、Bertoldi F.、Chen Chian-Chou、Geach J. E.、Matsuda Y.、et al.
  • Journal Title: The Astrophysical Journal Volume: 886 Issue: 1 Pages: 48-48
  • DOI: 10.3847/1538-4357/ab4d53
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Planck Far-infrared Detection of Hyper Suprime-Cam Protoclusters at z ~ 4: Hidden AGN and Star Formation Activity (2019)
  • Author(s): Kubo Mariko、Toshikawa Jun、Kashikawa Nobunari、Chiang Yi-Kuan、Overzier Roderik、Uchiyama Hisakazu、Clements David L.、Alexander David M.、Matsuda Yuichi、Kodama Tadayuki、Ono Yoshiaki、Goto Tomotsugu、Cheng Tai-An、Ito Kei
  • Journal Title: The Astrophysical Journal Volume: 887 Issue: 2 Pages: 214-214
  • DOI: 10.3847/1538-4357/ab5a80
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Detection of the Far-infrared [O iii] and Dust Emission in a Galaxy at Redshift 8.312: Early Metal Enrichment in the Heart of the Reionization Era (2019)
  • Author(s): Tamura Yoichi、Mawatari Ken、Hashimoto Takuya、Inoue Akio K.、Zackrisson Erik、Christensen Lise、Binggeli Christian、Matsuda Yuichi、Matsuo Hiroshi、Takeuchi Tsutomu T.、Asano Ryosuke S.、Sunaga Kaho、Shimizu Ikkoh、Okamoto Takashi、Yoshida Naoki、et al.
  • Journal Title: The Astrophysical Journal Volume: 874 Issue: 1 Pages: 27-27
  • DOI: 10.3847/1538-4357/ab0374
  • NAID: 120006650166
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The distribution and physical properties of high-redshift [O?iii] emitters in a cosmological hydrodynamics simulation (2018)
  • Author(s): Moriwaki Kana、Yoshida Naoki、Shimizu Ikkoh、Harikane Yuichi、Matsuda Yuichi、Matsuo Hiroshi、Hashimoto Takuya、Inoue Akio K、Tamura Yoichi、Nagao Tohru
  • Journal Title: Monthly Notices of the Royal Astronomical Society: Letters Volume: 481 Issue: 1 Pages: L84-L88
  • DOI: 10.1093/mnrasl/sly167
  • Peer Reviewed
• [Journal Article] A high dust emissivity index β for a CO-faint galaxy in a filamentary Lyα nebula at z = 3.1 (2018)
  • Author(s): Kato Yuta、Matsuda Yuichi、Iono Daisuke、Hatsukade Bunyo、Umehata Hideki、Kohno Kotaro、Alexander David M、Ao Yiping、Chapman Scott C、Hayes Matthew、Kubo Mariko、Lehmer Bret D、Malkan Matthew A、Michiyama Tomonari、Nagao Tohru、Saito Tomoki、Tanaka Ichi、Taniguchi Yoshiaki
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 5 Pages: 6-11
  • DOI: 10.1093/pasj/psy087
  • Peer Reviewed / Int'l Joint Research
• [Presentation] ALMA observations of galaxy proto clusters at z=3-6 (2020)
  • Author(s): Yuichi Matsuda
  • Organizer: EA ALMA Science WS
  • Int'l Joint Research
• [Presentation] 多重AGN探査 (2019)
  • Author(s): 松田有一
  • Organizer: SMBH研究会
  • Invited