Observational study on galaxy formation history based on the Subaru HSC survey

• Project/Area Number: 15K17602
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: The University of Tokyo
• Principal Investigator: Ono Yoshiaki 東京大学, 宇宙線研究所, 助教 (60631116)
• Project Period (FY): 2015-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: 光赤外線天文学 / 銀河形成 / 銀河進化 / 高赤方偏移銀河 / すばる望遠鏡 / 光学赤外線天文学

Outline of Final Research Achievements

In this study we have constructed an unprecedentedly large sample of high-redshift galaxies based on a wide area, deep multi-wavelength survey data using Subaru Hyper Suprime-Cam (HSC). From about 100 square degree data, more than 0.5 million high-redshift galaxies have been identified, which is more than ten times larger than those of previous studies. We have investigated their statistical properties such as the UV luminosity functions and correlation functions over a wide range of UV luminosity.

Academic Significance and Societal Importance of the Research Achievements

高赤方偏移銀河の光度関数は，低赤方偏移の観測結果をよく説明するシェヒター関数と比べて，明るい側で有意に超過していることがわかった．このことは，高赤方偏移銀河ではたらいているAGNなどによる星形成抑止効果がこれまで考えられていたよりも弱いことを示唆している．また，ハロー質量と星形成率の間に高赤方偏移で普遍的な関係があることを発見した．この関係と宇宙の構造形成理論を組み合わせると，銀河進化を理解する上で基本的な観測量である宇宙の星形成率密度の過去から現在に至る進化を自然に説明できることがわかった．

Research Products

• [Int'l Joint Research] Carnegie Observatories(米国)
• [Int'l Joint Research] Saint Mary’s University/National Research Council(カナダ)
• [Int'l Joint Research] Mahidol University(タイ)
• [Int'l Joint Research] Observatoire de Lyon(フランス)
• [Int'l Joint Research] University of Geneva(スイス)
• [Int'l Joint Research]
• [Int'l Joint Research] Carnegie Observatories(米国)
• [Int'l Joint Research] Saint Mary’s University/National Research Council(カナダ)
• [Int'l Joint Research] Mahidol University(タイ)
• [Int'l Joint Research] Observatoire de Lyon(フランス)
• [Int'l Joint Research] University of Geneva(スイス)
• [Int'l Joint Research]
• [Int'l Joint Research] Carnegie Observatories(米国)
• [Int'l Joint Research] Saint Mary's University/NRC-HIA(カナダ)
• [Int'l Joint Research] Mahidol University(タイ)
• [Int'l Joint Research] Observatoire de Lyon(フランス)
• [Int'l Joint Research] University of Geneva(スイス)
• [Int'l Joint Research]
• [Journal Article] CHORUS. II. Subaru/HSC Determination of the Lyα Luminosity Function at z = 7.0: Constraints on Cosmic Reionization Model Parameter (2019)
  • Author(s): Itoh, R., et al.
  • Journal Title: The Astrophysical Journal Volume: 867 Issue: 1 Pages: 46-46
  • DOI: 10.3847/1538-4357/aadfe4
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] SILVERRUSH. V. Census of Lyα, [O iii] λ5007, Hα, and [C ii] 158 μm Line Emission with ~1000 LAEs at z = 4.9-7.0 Revealed with Subaru/HSC (2018)
  • Author(s): Harikane Yuichi、Ouchi Masami、Shibuya Takatoshi、Kojima Takashi、Zhang Haibin、Itoh Ryohei、Ono Yoshiaki、Higuchi Ryo、Inoue Akio K.、Chevallard Jacopo、Capak Peter L.、Nagao Tohru、Onodera Masato、他13名
  • Journal Title: The Astrophysical Journal Volume: 859 Issue: 2 Pages: 84-84
  • DOI: 10.3847/1538-4357/aabd80
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] SILVERRUSH. VI. A simulation of Lyα emitters in the reionization epoch and a comparison with Subaru Hyper Suprime-Cam survey early data (2018)
  • Author(s): Inoue Akio K、Hasegawa Kenji、Ishiyama Tomoaki、Yajima Hidenobu、Shimizu Ikkoh、Umemura Masayuki、Konno Akira、Harikane Yuichi、Shibuya Takatoshi、Ouchi Masami、Shimasaku Kazuhiro、Ono Yoshiaki、Kusakabe Haruka、Higuchi Ryo、Lee Chien-Hsiu
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 3 Pages: 55-84
  • DOI: 10.1093/pasj/psy048
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Great Optically Luminous Dropout Research Using Subaru HSC (GOLDRUSH). I. UV luminosity functions at z ~ 4-7 derived with the half-million dropouts on the 100 deg2 sky (2018)
  • Author(s): Ono, Y., Shimasaku, K. et al. (26 authors in total)
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: SP1 Pages: 1-29
  • DOI: 10.1093/pasj/psx103
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Systematic Identification of LAEs for Visible Exploration and Reionization Research Using Subaru HSC (SILVERRUSH). I. Program strategy and clustering properties of ~ 2000 Lyα emitters at z = 6-7 over the 0.3-0.5 Gpc2 survey area (2018)
  • Author(s): Ouchi, M., Shimasaku, K. et al. (20 authors in total)
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: SP1 Pages: 1-16
  • DOI: 10.1093/pasj/psx074
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Full-data Results of Hubble Frontier Fields: UV Luminosity Functions at z~6-10 and a Consistent Picture of Cosmic Reionization (2018)
  • Author(s): Ishigaki Masafumi、Kawamata Ryota、Ouchi Masami、Oguri Masamune、Shimasaku Kazuhiro、Ono Yoshiaki
  • Journal Title: The Astrophysical Journal Volume: 854 Issue: 1 Pages: 1-20
  • DOI: 10.3847/1538-4357/aaa544
  • Peer Reviewed / Open Access
• [Journal Article] GOLDRUSH. II. Clustering of galaxies at z~4-6 revealed with the half-million dropouts over the 100 deg2 area corresponding to 1 Gpc3 (2017)
  • Author(s): Harikane Yuichi、Ouchi Masami、Ono Yoshiaki、Saito Shun、Behroozi Peter、More Surhud、Shimasaku Kazuhiro、Toshikawa Jun、Lin Yen-Ting、Akiyama Masayuki、Coupon Jean、Komiyama Yutaka、Konno Akira、Lin Sheng-Chieh、Miyazaki Satoshi、Nishizawa Atsushi J、Shibuya Takatoshi、Silverman John
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: SP1 Pages: 1-27
  • DOI: 10.1093/pasj/psx097
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] GOLDRUSH. III. A systematic search for protoclusters at z~4 based on the >100 deg2 area (2017)
  • Author(s): Toshikawa Jun、Uchiyama Hisakazu、Kashikawa Nobunari、Ouchi Masami、Overzier Roderik、Ono Yoshiaki、Harikane Yuichi、Ishikawa Shogo、Kodama Tadayuki、Matsuda Yuichi、Lin Yen-Ting、Onoue Masafusa、Tanaka Masayuki、Nagao Tohru、Akiyama Masayuki、Komiyama Yutaka、Goto Tomotsugu、Lee Chien-Hsiu
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: SP1 Pages: 1-11
  • DOI: 10.1093/pasj/psx102
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] SILVERRUSH. II. First catalogs and properties of ~2000 Lyα emitters and blobs at z~6-7 identified over the 14-21 deg2 sky (2017)
  • Author(s): Shibuya Takatoshi、Ouchi Masami、Konno Akira、Higuchi Ryo、Harikane Yuichi、Ono Yoshiaki、Shimasaku Kazuhiro、Taniguchi Yoshiaki、Kobayashi Masakazu A R、Kajisawa Masaru、Nagao Tohru、Furusawa Hisanori、Goto Tomotsugu、Kashikawa Nobunari、Komiyama Yutaka、Kusakabe Haruka、Lee Chien-Hsiu、Momose Rieko、et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: SP1 Pages: 1-20
  • DOI: 10.1093/pasj/psx122
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] SILVERRUSH. III. Deep optical and near-infrared spectroscopy for Lyα and UV-nebular lines of bright Lyα emitters at z=6-7 (2017)
  • Author(s): Shibuya Takatoshi、Ouchi Masami、Harikane Yuichi、Rauch Michael、Ono Yoshiaki、Mukae Shiro、Higuchi Ryo、Kojima Takashi、Yuma Suraphong、Lee Chien-Hsiu、Furusawa Hisanori、Konno Akira、Martin Crystal L、Shimasaku Kazuhiro、Taniguchi Yoshiaki、Kobayashi Masakazu A R、Kajisawa Masaru、Nagao Tohru、et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: SP1 Pages: 1-23
  • DOI: 10.1093/pasj/psx107
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] SILVERRUSH. IV. Lyα luminosity functions at z=5.7 and 6.6 studied with ~1300 Lyα emitters on the 14-21 deg2 sky (2017)
  • Author(s): Konno Akira、Ouchi Masami、Shibuya Takatoshi、Ono Yoshiaki、Shimasaku Kazuhiro、Taniguchi Yoshiaki、Nagao Tohru、Kobayashi Masakazu A R、Kajisawa Masaru、Kashikawa Nobunari、Inoue Akio K、Oguri Masamune、Furusawa Hisanori、Goto Tomotsugu、Harikane Yuichi、Higuchi Ryo、Komiyama Yutaka、et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: SP1 Pages: 1-21
  • DOI: 10.1093/pasj/psx131
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A new quadruple gravitational lens from the Hyper Suprime-Cam Survey: the puzzle of HSC J115252+004733 (2017)
  • Author(s): More, A., More, S. (8th author in 19 authors) et. al
  • Journal Title: MNRAS Volume: 465 Issue: 2 Pages: 2411-2419
  • DOI: 10.1093/mnras/stw2924
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] EVOLUTION OF STELLAR-TO-HALO MASS RATIO AT z=0-7 IDENTIFIED BY CLUSTERING ANALYSIS WITH THE HUBBLE LEGACY IMAGING AND EARLY SUBARU/HYPER SUPRIME-CAM SURVEY DATA (2016)
  • Author(s): Harikane, Ouchi et al.
  • Journal Title: The Astrophysical Journal Volume: 821 Issue: 2 Pages: 123-145
  • DOI: 10.3847/0004-637x/821/2/123
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] UV Luminosity Functions at z~4-7 Derived with the Half-Million Dropouts on the 100 deg2 Sky (2018)
  • Author(s): Ono Yoshiaki、Ouchi Masami、Harikane Yuichi、Toshikawa Jun、Rauch Michael、Yuma Suraphong、Sawicki Marcin、Shibuya Takatoshi、Shimasaku Kazuhiro、Oguri Masamune、Willott Chris、Akhlaghi Mohammad、Akiyama Masayuki、Coupon Jean、Kashikawa Nobunari、Komiyama Yutaka、Konno Akira、Lin Lihwai、Matsuoka Yoshiki、et al.
  • Organizer: Tokyo Spring Cosmic Lya Workshop (Sakura CLAW)
  • Int'l Joint Research
• [Presentation] Recent Progress of High-redshift Galaxy Studies (2018)
  • Author(s): Yoshiaki Ono
  • Organizer: First Stars and First Galaxies Workshop
  • Invited
• [Presentation] Bright End of the UV Luminosity Functions at z=4－7 Derived with the 100 deg^2 Data of the Subaru HSC Survey (2017)
  • Author(s): Ono, Y., Ouchi, M., Harikane, Y., et al.
  • Organizer: 日本天文学会2017年春季年会
  • Place of Presentation: 九州大学（福岡県福岡市）
  • Year and Date: 2017-03-15
• [Presentation] Recent Progress of High-redshift Galaxy Studies (2017)
  • Author(s): Yoshiaki Ono
  • Organizer: 30th Rironkon Symposium
  • Invited
• [Presentation] SPICA mid-infrared observations of high-redshift galaxies (2017)
  • Author(s): Yoshiaki Ono
  • Organizer: SPICA Workshop 2017
  • Invited
• [Presentation] UV Luminosity Functions at z=4-7 Derived with the Half-million Dropouts on the 100 deg2 Sky (2017)
  • Author(s): Ono Yoshiaki、Ouchi Masami、Harikane Yuichi、Toshikawa Jun、Rauch Michael、Yuma Suraphong、Sawicki Marcin、Shibuya Takatoshi、Shimasaku Kazuhiro、Oguri Masamune、Willott Chris、Akhlaghi Mohammad、Akiyama Masayuki、Coupon Jean、Kashikawa Nobunari、Komiyama Yutaka、Konno Akira、Lin Lihwai、Matsuoka Yoshiki、et al.
  • Organizer: CHORUS+Galaxy+IGM Workshop
• [Presentation] UV luminosity functions at z=4-7 derived with the half-million dropouts (2017)
  • Author(s): Ono Yoshiaki、Ouchi Masami、Harikane Yuichi、Toshikawa Jun、Rauch Michael、Yuma Suraphong、Sawicki Marcin、Shibuya Takatoshi、Shimasaku Kazuhiro、Oguri Masamune、Willott Chris、Akhlaghi Mohammad、Akiyama Masayuki、Coupon Jean、Kashikawa Nobunari、Komiyama Yutaka、Konno Akira、Lin Lihwai、Matsuoka Yoshiki、et al.
  • Organizer: Subaru HSC Survey Collaboration Meeting
  • Int'l Joint Research
• [Presentation] Bright End of the UV Luminosity Functions at z=4-7 Derived with the 200 deg^2 Data of the Subaru HSC Survey (2016)
  • Author(s): Ono, Y., Ouchi, M., Harikane, Y., et al.
  • Organizer: The 6th Subaru International Conference: Panoramas of the Evolving Cosmos
  • Place of Presentation: 広島国際会議場（広島県広島市）
  • Year and Date: 2016-11-28
  • Int'l Joint Research
• [Presentation] Studies of dropouts (2016)
  • Author(s): Ono, Y., Ouchi M., Harikane, Y., et al.
  • Organizer: HSC collaboration meeting 2016 August
  • Place of Presentation: カブリ数物連携宇宙研究機構（千葉県柏市）
  • Year and Date: 2016-08-23
  • Int'l Joint Research
• [Presentation] Studies of dropouts (2016)
  • Author(s): Ono, Y.
  • Organizer: HSC collaboration meeting 2016 January
  • Place of Presentation: Academia Sinica（台湾）
  • Year and Date: 2016-01-13
• [Presentation] The Bright-End of the Galaxy UV Luminosity Function Revealed by the Subaru Hyper Suprime-Cam Survey (2015)
  • Author(s): Ono, Y., Ouchi M., Harikane, Y., et al.
  • Organizer: 日本天文学会2015年秋季年会
  • Place of Presentation: 甲南大学（兵庫県神戸市）
  • Year and Date: 2015-09-09
• [Presentation] Report from High-z Galaxy WG and Narrow-band filters (2015)
  • Author(s): Ono, Y., Ouchi M., Shimasaku K., et al.
  • Organizer: HSC collaboration meeting 2015 July
  • Place of Presentation: Princeton University（アメリカ合衆国）
  • Year and Date: 2015-07-27