The ISM properties of extremely strong emission line galaxies discovered with Subaru/HSC

• Project/Area Number: 18K13578
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 16010:Astronomy-related
• Research Institution: The University of Tokyo
• Principal Investigator: Yabe Kiyoto 東京大学, カブリ数物連携宇宙研究機構, 特任研究員 (60749480)
• Project Period (FY): 2018-04-01 – 2023-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 銀河天文学 / 銀河形成 / 銀河進化 / 星間物質 / すばる望遠鏡 / 光赤外天文学 / 赤外線天文学 / 化学進化

Outline of Final Research Achievements

We discovered extremely strong emission line galaxies (with the rest equivalent width of [OIII]5007>1000A), based on the large photometric data obtained by using Subaru Hyper Suprime-Cam (HSC). According to the follow up spectroscopy, there galaxies have large star formation rate and low metallicity compared to normal galaxies at similar redshift and mass range. These galaxies also show extremely strong [OIII]/[OII] emission line ratio and HeII emission line is detected according to the spectral stacking analysis, which imply that X-ray binary systems may play important role in these galaxies.

Academic Significance and Societal Importance of the Research Achievements

本研究ではすばる望遠鏡HSCによって得られた大規模撮像データを有効利用し、銀河形成進化の鍵となるような特異な銀河種族の探査とその性質の調査を行った。これまでに行われている同様の赤方偏移での研究と比べ、非常に大きな輝線等価幅を示す銀河種族を発見し、それらが極めて特異な星間物質の状態を示していることを明らかにした。また、X線連星が銀河の性質に大きな寄与をしている可能性があること明らかにした。これらの銀河種族の系統的な研究は、銀河形成進化モデルの発展のみならず、連星進化モデルの発展にも繋がる成果である。

Research Products

• [Int'l Joint Research] プリンストン大学/ジョンズ・ホプキンス大学(米国)
• [Int'l Joint Research] 台湾中央研究院(その他の国・地域 (台湾))
• [Int'l Joint Research] プリンストン大学(米国)
• [Int'l Joint Research] 台湾中央研究院(台湾)
• [Int'l Joint Research] プリンストン大学/ジョンズ・ホプキンス大学(米国)
• [Int'l Joint Research] 台湾中央研究院(その他の国・地域)
• [Int'l Joint Research] プリンストン大学/ジョンズ・ホプキンス大学(米国)
• [Int'l Joint Research] 台湾中央研究院(その他の国・地域)
• [Journal Article] EMPRESS. IX. Extremely Metal-Poor Galaxies are Very Gas-Rich Dispersion-Dominated Systems: Will JWST Witness Gaseous Turbulent High-z Primordial Galaxies? (2023)
  • Author(s): Yuki Isobe、 Masami Ouchi、 Kimihiko Nakajima、 他46名、 Kiyoto Yabe、 Yechi Zhang
  • Journal Title: The Astrophysical Journal Volume: in press
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] EMPRESS. VIII. A New Determination of Primordial He Abundance with Extremely Metal-poor Galaxies: A Suggestion of the Lepton Asymmetry and Implications for the Hubble Tension (2022)
  • Author(s): Matsumoto Akinori、Ouchi Masami、Nakajima Kimihiko、Kawasaki Masahiro、Murai Kai、 et al
  • Journal Title: The Astrophysical Journal Volume: 941 Issue: 2 Pages: 167-167
  • DOI: 10.3847/1538-4357/ac9ea1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Prime Focus Spectrograph (PFS) for the Subaru Telescope: its start of the last development phase (2022)
  • Author(s): Tamura Naoyuki、Moritani Yuki、Yabe Kiyoto、Ishizuka Yuki、Kamata Yukiko、......、Onodera Masato、et al.
  • Journal Title: Proceedings of the SPIE Volume: 12184 Pages: 1-18
  • DOI: 10.1117/12.2628152
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Internal Structure of Molecular Gas in a Main-sequence Galaxy With a UV Clump at z = 1.45 (2021)
  • Author(s): Ushio Kaito、Ohta Kouji、Maeda Fumiya、Hatsukade Bunyo、Yabe Kiyoto
  • Journal Title: The Astrophysical Journal Volume: 909 Issue: 1 Pages: 84-84
  • DOI: 10.3847/1538-4357/abdd1f
  • Peer Reviewed / Open Access
• [Journal Article] EMPRESS. II. Highly Fe-enriched Metal-poor Galaxies with ~1.0 (Fe/O)sun and 0.02 (O/H)sun: Possible Traces of Supermassive (>300 Msun) Stars in Early Galaxies (2021)
  • Author(s): Kojima Takashi、Ouchi Masami、Rauch Michael、Ono Yoshiaki、Nakajima Kimihiko、Isobe Yuki、Fujimoto Seiji、Harikane Yuichi、Hashimoto Takuya、Hayashi Masao、Komiyama Yutaka、Kusakabe Haruka、Kim Ji Hoon、Lee Chien-Hsiu、Mukae Shiro、Nagao Tohru、Onodera Masato et al.
  • Journal Title: The Astrophysical Journal Volume: 913 Issue: 1 Pages: 22-22
  • DOI: 10.3847/1538-4357/abec3d
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] EMPRESS. III. Morphology, Stellar Population, and Dynamics of Extremely Metal-poor Galaxies (EMPGs): Are EMPGs Local Analogs of High-z Young Galaxies?* (2021)
  • Author(s): Isobe Yuki、Ouchi Masami、Kojima Takashi、Shibuya Takatoshi、Hayashi Kohei、Rauch Michael、Kikuchihara Shotaro、Zhang Haibin、Ono Yoshiaki、Fujimoto Seiji、Harikane Yuichi、Kim Ji Hoon、Komiyama Yutaka、Kusakabe Haruka、Lee Chien-Hsiu、Mawatari Ken、Onodera Masato、Sugahara Yuma、Yabe Kiyoto
  • Journal Title: The Astrophysical Journal Volume: 918 Issue: 2 Pages: 54-54
  • DOI: 10.3847/1538-4357/ac05bf
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A fundamental plane in X-ray binary activity of external galaxies (2021)
  • Author(s): Inoue, Y., Yabe, K., Ueda, Y.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 73 Issue: 5 Pages: 1315-1332
  • DOI: 10.1093/pasj/psab077
  • Peer Reviewed / Open Access
• [Journal Article] Mitigating the impact of fiber assignment on clustering measurements from deep galaxy redshift surveys (2020)
  • Author(s): Sunayama Tomomi、Takada Masahiro、Reinecke Martin、Makiya Ryu、Nishimichi Takahiro、Komatsu Eiichiro、Saito Shun、Tamura Naoyuki、Yabe Kiyoto
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 6 (2020) Issue: 06 Pages: 057-057
  • DOI: 10.1088/1475-7516/2020/06/057
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Extremely Metal-poor Representatives Explored by the Subaru Survey (EMPRESS). I. A Successful Machine-learning Selection of Metal-poor Galaxies and the Discovery of a Galaxy with M* < 10^6 Msun and 0.016 Zsun (2020)
  • Author(s): Kojima Takashi、Ouchi Masami、Rauch Michael、Ono Yoshiaki、Nakajima Kimihiko、Isobe Yuki、Fujimoto Seiji、Harikane Yuichi、Hashimoto Takuya、Hayashi Masao、他10名、Yabe Kiyoto
  • Journal Title: The Astrophysical Journal Volume: 898 Issue: 2 Pages: 142-142
  • DOI: 10.3847/1538-4357/aba047
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A 16 deg2 survey of emission-line galaxies at z < 1.6 from HSC-SSP PDR2 and CHORUS (2020)
  • Author(s): Hayashi Masao、Shimakawa Rhythm、Tanaka Masayuki、Onodera Masato、Koyama Yusei、Inoue Akio K、Komiyama Yutaka、Lee Chien-Hsiu、Lin Yen-Ting、Yabe Kiyoto
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 72 Issue: 5 Pages: 086-086
  • DOI: 10.1093/pasj/psaa076
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Quiescent Galaxies 1.5 Billion Years after the Big Bang and Their Progenitors (2020)
  • Author(s): Valentino Francesco、Tanaka Masayuki、Davidzon Iary、他16名、Yabe Kiyoto、他1名
  • Journal Title: The Astrophysical Journal Volume: 889 Issue: 2 Pages: 93-93
  • DOI: 10.3847/1538-4357/ab64dc
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The synthetic Emission Line COSMOS catalogue: Hα and [Oii] galaxy luminosity functions and counts at 0.3 < z < 2.5 (2020)
  • Author(s): Saito Shun、de la Torre Sylvain、Ilbert Olivier、Dubois Cedric、Yabe Kiyoto、Coupon Jean
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 494 Issue: 1 Pages: 199-217
  • DOI: 10.1093/mnras/staa727
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Stellar Velocity Dispersion of a Massive Quenching Galaxy at z = 4.01 (2019)
  • Author(s): Tanaka Masayuki、Valentino Francesco、Toft Sune、Onodera Masato、Shimakawa Rhythm、Ceverino Daniel、Faisst Andreas L.、Gallazzi Anna、Gomez-Guijarro Carlos、Kubo Mariko、Magdis Georgios E.、Steinhardt Charles L.、Stockmann Mikkel、Yabe Kiyoto、Zabl Johannes
  • Journal Title: The Astrophysical Journal Volume: 885 Issue: 2 Pages: L34-L34
  • DOI: 10.3847/2041-8213/ab4ff3
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The Subaru FMOS galaxy redshift survey (FastSound). V. Intrinsic alignments of emission-line galaxies at z ~ 1.4 (2018)
  • Author(s): Tonegawa Motonari、Okumura Teppei、Totani Tomonori、Dalton Gavin、Glazebrook Karl、Yabe Kiyoto
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 3
  • DOI: 10.1093/pasj/psy030
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Prime Focus Spectrograph (PFS) for the Subaru telescope: ongoing integration and future plans (2018)
  • Author(s): Tamura Naoyuki、Chu You-Hua、Gunn James E.、Strauss Michael A.、Heckman Timothy M.、Smee Stephen A.、Le Fevre Olivier、Le Mignant David、Aghazarian Hrand、Chabaud Pierre-Yves、他12 名、Yabe Kiyoto、他79名
  • Journal Title: Proceedings of the SPIE Volume: 10702 Pages: 1-1
  • DOI: 10.1117/12.2311871
  • Int'l Joint Research
• [Journal Article] The Rest-frame Optical Sizes of Massive Galaxies with Suppressed Star Formation at z ~ 4 (2018)
  • Author(s): Kubo Mariko、Tanaka Masayuki、Yabe Kiyoto、Toft Sune、Stockmann Mikkel、Gomez-Guijarro Carlos
  • Journal Title: The Astrophysical Journal Volume: 867 Issue: 1 Pages: 1-1
  • DOI: 10.3847/1538-4357/aae3e8
  • Peer Reviewed / Int'l Joint Research
• [Presentation] SuMIRe-PFS[37]: 2次元PSFモデリングに向けた解析 (2023)
  • Author(s): 林康太、矢部清人、他5名
  • Organizer: 日本天文学会2023年春季年会
• [Presentation] Survey simulation (2022)
  • Author(s): Kiyoto Yabe
  • Organizer: PFS 13th collaboration meeting
• [Presentation] SuMIRe-PFS[28]: 夜間試験観測へ向けたデータ解析環境の準備状況 (2021)
  • Author(s): 矢部清人
  • Organizer: 日本天文学会2021年秋季年会
• [Presentation] Expected PFS performance (2021)
  • Author(s): Kiyoto Yabe
  • Organizer: 12th PFS Collaboration Meeting (online)
• [Presentation] PFS SSP survey plan and PFS Galaxy/AGN Evolution and Cosmology survey (2019)
  • Author(s): Kiyoto Yabe
  • Organizer: 第6回銀河進化研究会
  • Invited
• [Presentation] The current status of PFS project (2019)
  • Author(s): 矢部清人
  • Organizer: 赤外線広視野サイエンスワークショップ2019
  • Invited
• [Presentation] SuMIRe-PFS[14]: 装置性能評価の現状 (2019)
  • Author(s): 矢部清人
  • Organizer: 日本天文学会 2019年 秋季年会
• [Presentation] Prime Focus Spectrograph (PFS): the expected performance (2019)
  • Author(s): Kiyoto Yabe
  • Organizer: SUBARU TELESCOPE 20TH ANNIVERSARY
• [Presentation] Prime Focus Spectrograph (PFS): the SSP survey plan and simulations (2019)
  • Author(s): Kiyoto Yabe
  • Organizer: SUBARU TELESCOPE 20TH ANNIVERSARY
• [Presentation] PFS (2019)
  • Author(s): Kiyoto Yabe
  • Organizer: Subaru-EAO High-z Galaxy Workshop 2019
  • Int'l Joint Research / Invited
• [Presentation] The current status of PFS project (2019)
  • Author(s): Kiyoto Yabe
  • Organizer: Panchromatic Panoramic Studies of Galaxy Clusters: from HSC to PFS and ULTIMATE
  • Int'l Joint Research / Invited
• [Presentation] Search for extremely strong emission line galaxies at z < 1 using Subaru/HSC (2018)
  • Author(s): 矢部清人
  • Organizer: 第5回 銀河進化研究会
• [Presentation] The ISM properties of low-mass galaxies with extremely strong emission lines at z=0.3-0.8 discovered with Subaru/HSC (2018)
  • Author(s): Kiyoto Yabe, Takashi Kojima, Yoshiaki Ono, Yuichi Harikane, Takatoshi Shibuya, Daichi Kashino, Rhythm Shimakawa, and HSC GP team
  • Organizer: IAU Symposium 344, DWARF GALAXIES: FROM THE DEEP UNIVERSE TO THE PRESENT
  • Int'l Joint Research
• [Presentation] SuMIRe-PFS[12];サーベイ計画の現状とサーベイシミュレーターの開発 (2018)
  • Author(s): 矢部清人, 田村直之, 高田昌広, 安田直樹, ほか PFS プロジェクトオフィス, PFS コラボレーション
  • Organizer: 日本天文学会2018年秋季年会