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Study of Distant Galaxy Morphology Using Subaru Telescope Wide-Area Survey Data

Research Project

Project/Area Number 20K14508
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 16010:Astronomy-related
Research InstitutionKitami Institute of Technology

Principal Investigator

SHIBUYA Takatoshi  北見工業大学, 工学部, 助教 (30713995)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords銀河形態 / 遠方銀河 / すばる望遠鏡 / 機械学習 / スパースモデリング
Outline of Research at the Start

銀河は過去から現在にかけて形態を変化させてきたが,銀河の形態進化過程の解明には至っていない.従来は,主にハッブル宇宙望遠鏡の高解像度画像を用いて銀河形態進化が調べられてきた.しかし,ハッブル宇宙望遠鏡の視野が狭いため,大質量銀河/高光度銀河/希少銀河の形態,遠方銀河形態の環境依存性については決定的な情報が得られていない.本研究では,すばる望遠鏡の広領域探査データと機械学習/スパースモデリング等の情報科学技術を組み合わせ,低解像度画像から遠方銀河の形態を推定する.広領域探査データの利点を活かし,大質量銀河/高光度銀河/希少銀河の形態の発現機構,銀河環境が遠方銀河形態に及ぼす影響等について調べる.

Outline of Final Research Achievements

In this study, we have investigated morphological properties of distant and rare galaxies using multiple image processing techniques to enhance the spatial resolution of images taken by the Hyper Suprime-Cam (HSC), a wide-field camera on the Subaru Telescope. We have established procedures for enhancing low-spatial resolution HSC images in three image processing methods: the point spread function (PSF) deconvolution method (a classical approach), sparse modeling that incorporates sparsity and smoothness constraints into the classical approach, and the generative adversarial network. By leveraging the high-spatial resolution HSC images obtained through these processes and the wide survey coverage of the HSC survey data, we have revealed impacts of galaxy mergers on the formation and evolution of distant and rare galaxies.

Academic Significance and Societal Importance of the Research Achievements

本研究で,画像高解像度化の技術と広領域探査データを組み合わせ,遠方希少銀河の形態を調べる手法を確立できた.本手法はジェームズウェッブ宇宙望遠鏡のデータに応用可能であり,赤方偏移z>7の宇宙最初期の銀河形態研究を展開できると期待される.また,機械学習による銀河形態研究の一環として,HSC画像から銀河の半光度半径などの銀河形態パラメータを推定する,機械学習ソフトウェアを開発した.本ソフトウェアは,将来の地上広領域探査で得られる,大規模銀河サンプルの銀河形態パラメータを高速に推定するための有用なツールになると考えられる.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (29 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (23 results) (of which Int'l Joint Research: 23 results,  Peer Reviewed: 23 results,  Open Access: 16 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Int'l Joint Research] University of Copenhagen(デンマーク)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Updated Measurements of [O iii] 88 μm, [C ii] 158 μm, and Dust Continuum Emission from a z = 7.2 Galaxy2023

    • Author(s)
      Ren Yi W.、Fudamoto Yoshinobu、Inoue Akio K.、Sugahara Yuma、Tokuoka Tsuyoshi、Tamura Yoichi、Matsuo Hiroshi、Kohno Kotaro、Umehata Hideki、Hashimoto Takuya、Bouwens Rychard J.、Smit Renske、Kashikawa Nobunari、Okamoto Takashi、Shibuya Takatoshi、Shimizu Ikkoh
    • Journal Title

      The Astrophysical Journal

      Volume: 945 Issue: 1 Pages: 69-69

    • DOI

      10.3847/1538-4357/acb8ab

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Third data release of the Hyper Suprime-Cam Subaru Strategic Program2022

    • Author(s)
      Aihara Hiroaki et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 74 Issue: 2 Pages: 247-272

    • DOI

      10.1093/pasj/psab122

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] SILVERRUSH. XII. Intensity Mapping for Lyα Emission Extending over 100-1000 Comoving Kpc around z~2-7 LAEs with Subaru HSC-SSP and CHORUS Data2022

    • Author(s)
      Kikuchihara Shotaro、Harikane Yuichi、Ouchi Masami、Ono Yoshiaki、Shibuya Takatoshi、Itoh Ryohei、Kakuma Ryota、Inoue Akio K.、Kusakabe Haruka、Shimasaku Kazuhiro、Momose Rieko、Sugahara Yuma、Kikuta Satoshi、Saito Shun、Kashikawa Nobunari、Zhang Haibin、Lee Chien-Hsiu
    • Journal Title

      The Astrophysical Journal

      Volume: 931 Issue: 2 Pages: 97-97

    • DOI

      10.3847/1538-4357/ac69de

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] ALMA Observations of CO Emission from Luminous Lyman-break Galaxies at z = 6.0293-6.20372022

    • Author(s)
      Ono Yoshiaki、Fujimoto Seiji、Harikane Yuichi、Ouchi Masami、Vallini Livia、Ferrara Andrea、Shibuya Takatoshi、Pallottini Andrea、Inoue Akio K.、Imanishi Masatoshi、Shimasaku Kazuhiro、Hashimoto Takuya、Lee Chien-Hsiu、Sugahara Yuma、Tamura Yoichi、Kohno Kotaro、Schramm Malte
    • Journal Title

      The Astrophysical Journal

      Volume: 941 Issue: 1 Pages: 74-74

    • DOI

      10.3847/1538-4357/ac9ea6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / 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 Tension2022

    • 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

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Galaxy morphologies revealed with Subaru HSC and super-resolution techniques. I. Major merger fractions of LUV~3-15 L*UV dropout galaxies at z~4-72022

    • Author(s)
      Shibuya Takatoshi、Miura Noriaki、Iwadate Kenji、Fujimoto Seiji、Harikane Yuichi、Toba Yoshiki、Umayahara Takuya、Ito Yohito
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 74 Issue: 1 Pages: 73-91

    • DOI

      10.1093/pasj/psab111

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] CHORUS. IV. Mapping the Spatially Inhomogeneous Cosmic Reionization with Subaru HSC2022

    • Author(s)
      Yoshioka Takehiro、Kashikawa Nobunari、Inoue Akio K.、Yamanaka Satoshi、Shimasaku Kazuhiro、Harikane Yuichi、Shibuya Takatoshi、Momose Rieko、Ito Kei、Liang Yongming、Ishimoto Rikako、Takeda Yoshihiro、Ouchi Masami、Lee Chien-Hsiu
    • Journal Title

      The Astrophysical Journal

      Volume: 927 Issue: 1 Pages: 32-32

    • DOI

      10.3847/1538-4357/ac4b5d

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] GOLDRUSH. IV. Luminosity Functions and Clustering Revealed with ~4,000,000 Galaxies at z ~ 2-7: Galaxy - AGN Transition, Star Formation Efficiency, and Implication for Evolution at z > 102022

    • Author(s)
      Harikane Yuichi、Ono Yoshiaki、Ouchi Masami、et al.
    • Journal Title

      The Astrophysical Journal Supplement Series

      Volume: 259 Issue: 1 Pages: 20-20

    • DOI

      10.3847/1538-4365/ac3dfc

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] SILVERRUSH X: Machine Learning-aided Selection of 9318 LAEs at z = 2.2, 3.3, 4.9, 5.7, 6.6, and 7.0 from the HSC SSP and CHORUS Survey Data2021

    • Author(s)
      Ono Yoshiaki、Itoh Ryohei、Shibuya Takatoshi、Ouchi Masami、Harikane Yuichi、Yamanaka Satoshi、Inoue Akio K.、他
    • Journal Title

      The Astrophysical Journal

      Volume: 911 Issue: 2 Pages: 78-78

    • DOI

      10.3847/1538-4357/abea15

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [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 Galaxies2021

    • 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

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / 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 Halos2021

    • 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

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / 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

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XIV. A Candidate Type II Quasar at z = 6.12922021

    • Author(s)
      Onoue Masafusa、Matsuoka Yoshiki、Kashikawa Nobunari、Strauss Michael A.、Iwasawa Kazushi、Izumi Takuma、Nagao Tohru、Asami Naoko、Fujimoto Seiji、Harikane Yuichi、Hashimoto Takuya、Imanishi Masatoshi、Lee Chien-Hsiu、Shibuya Takatoshi、Toba Yoshiki
    • Journal Title

      The Astrophysical Journal

      Volume: 919 Issue: 1 Pages: 61-61

    • DOI

      10.3847/1538-4357/ac0f07

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hyper Suprime-Cam Subaru Strategic Program: A Mass-dependent Slope of the Galaxy Size-Mass Relation at z < 12021

    • Author(s)
      Kawinwanichakij Lalitwadee、Silverman John D.、Ding Xuheng、George Angelo、Damjanov Ivana、Sawicki Marcin、Tanaka Masayuki、Taranu Dan S.、Birrer Simon、Huang Song、Li Junyao、Onodera Masato、Shibuya Takatoshi、Yasuda Naoki
    • Journal Title

      The Astrophysical Journal

      Volume: 921 Issue: 1 Pages: 38-38

    • DOI

      10.3847/1538-4357/ac1f21

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] ALMA uncovers the [C ii] emission and warm dust continuum in a z?= 8.31 Lyman break galaxy2020

    • Author(s)
      Bakx Tom J L C and Okamoto Takashi et al.
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 493 Issue: 3 Pages: 4294-4307

    • DOI

      10.1093/mnras/staa509

    • NAID

      120006872433

    • Related Report
      2020 Research-status Report
    • 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 Technique2020

    • 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

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / 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

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Observations of the Lyman-α Universe2020

    • Author(s)
      Ouchi Masami、Ono Yoshiaki、Shibuya Takatoshi
    • Journal Title

      Annual Review of Astronomy and Astrophysics

      Volume: 58 Issue: 1 Pages: 617-659

    • DOI

      10.1146/annurev-astro-032620-021859

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / 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 Zsun2020

    • 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

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The UV Luminosity Function of Protocluster Galaxies at z ? 4: The Bright-end Excess and the Enhanced Star Formation Rate Density2020

    • Author(s)
      Ito Kei、Kashikawa Nobunari、Toshikawa Jun、Overzier Roderik、Kubo Mariko、Uchiyama Hisakazu、Liang Yongming、Onoue Masafusa、Tanaka Masayuki、Komiyama Yutaka、Lee Chien-Hsiu、Lin Yen-Ting、Marinello Murilo、Martin Crystal L.、Shibuya Takatoshi
    • Journal Title

      The Astrophysical Journal

      Volume: 899 Issue: 1 Pages: 5-5

    • DOI

      10.3847/1538-4357/aba269

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Broadband Selection, Spectroscopic Identification, and Physical Properties of a Population of Extreme Emission-line Galaxies at 3 < z < 3.72020

    • Author(s)
      Onodera Masato、Shimakawa Rhythm、Suzuki Tomoko L.、Tanaka Ichi、Harikane Yuichi、Hayashi Masao、Kodama Tadayuki、Koyama Yusei、Nakajima Kimihiko、Shibuya Takatoshi
    • Journal Title

      The Astrophysical Journal

      Volume: 904 Issue: 2 Pages: 180-180

    • DOI

      10.3847/1538-4357/abc174

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CHORUS. I. Cosmic HydrOgen Reionization Unveiled with Subaru: Overview2020

    • Author(s)
      Inoue Akio K、Yamanaka Satoshi、Ouchi Masami、Iwata Ikuru、Shimasaku Kazuhiro、Taniguchi Yoshiaki、Nagao Tohru、Kashikawa Nobunari、Ono Yoshiaki、Mawatari Ken、Shibuya Takatoshi、Hayashi Masao、Ikeda Hiroyuki、Zhang Haibin、Liang Yongming、Lee Chien-Hsiu、Hilmi Miftahul、Kikuta Satoshi、Kusakabe Haruka、et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 72 Issue: 6 Pages: 101-101

    • DOI

      10.1093/pasj/psaa100

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A machine learning software to estimate morphological parameters of distant galaxies2020

    • Author(s)
      Umayahara Takuya、Shibuya Takatoshi、Miura Noriaki、Chang Yu-Yen、Fujimoto Seiji、Harikane Yuichi、Higuchi Ryo、Inoue Shigeki、Kojima Takashi、Tadaki Ken-ichi、Toba Yoshiki
    • Journal Title

      Proceedings of the SPIE

      Volume: 11452 Pages: 86-86

    • DOI

      10.1117/12.2561264

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Super-Resolution with Subaru/HSC Data I: Major Merger Fractions of L_UV~3-15 L*UV Dropout Galaxies at z~4-72021

    • Author(s)
      Takatoshi Shibuya, Noriaki Miura, Kenji Iwadate, Seiji Fujimoto, Yuichi Harikane, Yoshiki Toba, Takuya Umayahara, Yohito Ito
    • Organizer
      日本天文学会2021年秋季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 画像高解像度化による銀河形態研究 -AGN母銀河の形態研究に向けて-2021

    • Author(s)
      澁谷隆俊
    • Organizer
      超巨大ブラックホール研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] 機械学習による遠方銀河の形態パラメータ推定II2021

    • Author(s)
      馬屋原拓也,澁谷隆俊,三浦則明,HSC Project 264メンバー
    • Organizer
      日本天文学会春季年会
    • Related Report
      2020 Research-status Report
  • [Presentation] A machine learning software to estimate morphological parameters of distant galaxies2020

    • Author(s)
      Takuya Umayahara, Takatoshi Shibuya, Noriaki Miura, Yu-Yen Chang, Seiji Fujimoto, Yuichi Harikane, Ryo Higuchi, Shigeki Inoue, Takashi Kojima, Ken-ichi Tadaki, Yoshiki Toba
    • Organizer
      SPIE Astronomical Telescopes + Instrumentation 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 画像高速処理と画像高品質化による銀河形態研究2020

    • Author(s)
      澁谷隆俊,馬屋原拓也,三浦則明,HSC project 264 メンバー
    • Organizer
      光学赤外線天文連絡会シンポジウム「データ解析の新展開2020」
    • Related Report
      2020 Research-status Report
    • Invited

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Published: 2020-04-28   Modified: 2024-12-25  

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