ライマンアルファハローで明かす銀河進化におけるガス循環の解明

• Project/Area Number: 18J40088
• Research Category: Grant-in-Aid for JSPS Fellows
• Allocation Type: Single-year Grants
• Section: 国内
• Research Field: Astronomy
• Research Institution: The University of Tokyo
• Principal Investigator: 百瀬 莉恵子 東京大学, 大学院理学系研究科, 特別研究員(RPD)
• Project Period (FY): 2018-04-25 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 大規模構造 / 銀河進化 / 環境効果 / 分光探査 / IGM / CGM / Lyα ハロー / 銀河種族 / 銀河諸性質 / 宇宙論的流体シミュレーション / Lyαハロー / クエーサー

Outline of Annual Research Achievements

令和三年度は、「大規模構造と銀河進化の関係」について注力し研究を進めた。この課題では大規模空間中の Lyα 光子の放射機構も議論するため、本研究課題の中の「大規模空間中の Lyα 光子の調査」と密接に関係している。この課題では、観測データをもとに、銀河の成長過程 (進化) とダークマターの大規模な密度分布である大規模構造との関係を調査した。銀河は、大規模構造の中の密度が高い領域で生まれ、大規模構造中の各環境 (低密度から、ボイド、シート、フィラメント、ノード) に依存して異なる進化過程を経る可能性があることが指摘されている (銀河進化の環境効果)。観測的な環境効果の研究では、広い天域に存在する銀河を網羅的に分光観測し、大規模構造を推定する。そのため、広い天域の銀河の分光データが必要となり、結果、これまでの多くの環境効果の研究は、銀河の分光観測が盛んに行われている現在から近傍の宇宙に限定されている。しかし近年、天域を限定し、遠方宇宙に存在する銀河を網羅的に分光観測するプロジェクトが進行しており、こうしたプロジェクトで取得された分光データを用いた大規模構造の再現データの生成も行われている。本研究では、この再現データをもとに大規模構造の環境と各環境に属する銀河の物理的性質の関係を徹底調査した。また、銀河の成長段階によって発現する物理的性質毎に銀河を分類し、銀河の成長段階と大規模構造の環境の依存性を調査した。本年度中に結果がまとまったため、現在投稿論文を準備している。

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] Princeton University(米国)
• [Int'l Joint Research] University of Geneva/Geneva Observatory(スイス)
• [Int'l Joint Research] Carnegie Observatories/Stanford University(米国)
• [Int'l Joint Research] Macquarie University(オーストラリア)
• [Int'l Joint Research] University of Lyon/Sorbonne University(フランス)
• [Int'l Joint Research] National Tsing Hua University (Taiwan)(その他の国・地域)
• [Int'l Joint Research] National Tsing Hua University(その他の国・地域（台湾）)
• [Journal Article] CHORUS. IV. Mapping the Spatially Inhomogeneous Cosmic Reionization with Subaru HSC (2022)
  • 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
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] SILVERRUSH. XI. Constraints on the Lyα Luminosity Function and Cosmic Reionization at z = 7.3 with Subaru/Hyper Suprime-Cam (2021)
  • Author(s): Goto Hinako、Shimasaku Kazuhiro、Yamanaka Satoshi、Momose Rieko、Ando Makoto、Harikane Yuichi、Hashimoto Takuya、Inoue Akio K.、Ouchi Masami
  • Journal Title: The Astrophysical Journal Volume: 923 Issue: 2 Pages: 229-229
  • DOI: 10.3847/1538-4357/ac308b
  • Peer Reviewed
• [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] Probing Feedback via IGM tomography and the Lyα Forest with Subaru PFS, TMT/ELT, and JWST (2021)
  • Author(s): Nagamine Kentaro、Shimizu Ikkoh、Fujita Katsumi、Suzuki Nao、Lee Khee-Gan、Momose Rieko、Mukae Shiro、Liang Yongming、Kashikawa Nobunari、Ouchi Masami、Silverman John D.
  • Journal Title: The Astrophysical Journal Volume: 914 Issue: 1 Pages: 66-66
  • DOI: 10.3847/1538-4357/abfa16
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Subaru Hyper Suprime-Cam excavates colossal over- and underdense structures over 360?deg2 out to <i>z</i> = 1 (2021)
  • Author(s): Shimakawa Rhythm、Higuchi Yuichi、Shirasaki Masato、Tanaka Masayuki、Lin Yen-Ting、Hayashi Masao、Momose Rieko、Lee Chien-Hsiu、Kusakabe Haruka、Kodama Tadayuki、Yamamoto Naoaki
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 503 Issue: 3 Pages: 3896-3912
  • DOI: 10.1093/mnras/stab713
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Catch Me if You Can: Biased Distribution of Lyα-emitting Galaxies according to the Viewing Direction (2021)
  • Author(s): Momose Rieko、Shimasaku Kazuhiro、Nagamine Kentaro、Shimizu Ikkoh、Kashikawa Nobunari、Ando Makoto、Kusakabe Haruka
  • Journal Title: The Astrophysical Journal Letters Volume: 912 Issue: 2 Pages: L24-L24
  • DOI: 10.3847/2041-8213/abf04c
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Connection between Galaxies and HI in Circumgalactic and Intergalactic Media: Variation according to Galaxy Stellar Mass and Star Formation Activity (2021)
  • Author(s): Momose Rieko、Shimizu Ikkoh、Nagamine Kentaro、Shimasaku Kazuhiro、Kashikawa Nobunari、Kusakabe Haruka
  • Journal Title: The Astrophysical Journal Volume: 911 Issue: 2 Pages: 98-98
  • DOI: 10.3847/1538-4357/abe1b9
  • 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 Data (2021)
  • 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
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] SIGNALS: I. Survey description (2019)
  • Author(s): Rousseau-Nepton L (他共著者 63 名, Rieko Momose も含む)
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 489 Issue: 4 Pages: 5530-5546
  • DOI: 10.1093/mnras/stz2455
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A young galaxy cluster in the old Universe (2019)
  • Author(s): Hashimoto Tetsuya、Goto Tomotsugu、Momose Rieko、Ho Chien-Chang、Makiya Ryu、Chiang Chia-Ying、Kim Seong Jin
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 489 Issue: 2 Pages: 2014-2029
  • DOI: 10.1093/mnras/stz2182
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Possible evolution of the circum-galactic medium around QSOs with QSO age and cosmic time revealed by Ly?α haloes (2019)
  • Author(s): Momose Rieko、Goto Tomotsugu、Utsumi Yousuke、Hashimoto Tetsuya、Chiang Chia-Ying、Kim Seong-Jin、Kashikawa Nobunari、Shimasaku Kazuhiro、Miyazaki Satoshi
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 488 Issue: 1 Pages: 120-134
  • DOI: 10.1093/mnras/stz1707
  • 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] The dominant origin of diffuse Ly α halos around LAEs explored by SED fitting and clustering analysis (2019)
  • Author(s): Kusakabe, Haruka; Shimasaku, Kazuhiro; Momose, Rieko; Ouchi, Masami; Nakajima, Kimihiko; Hashimoto, Takuya; Harikane, Yuichi; Silverman, John D.; Capak, Peter L. Abstract
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 印刷中 Issue: 3 Pages: 55-89
  • DOI: 10.1093/pasj/psz029
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Infrared luminosity functions based on 18 mid-infrared bands: revealing cosmic star formation history with AKARI and Hyper Suprime-Cam* (2019)
  • Author(s): Goto Tomotsugu、Oi Nagisa、Utsumi Yousuke、Momose Rieko、Matsuhara Hideo、Hashimoto Tetsuya、Toba Yoshiki、et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Issue: 2 Pages: 30-39
  • DOI: 10.1093/pasj/psz009
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The dominant origin of diffuse Lyα halos around LAEs explored by SED fitting and clustering analysis (2019)
  • Author(s): Kusakabe, Haruka; Shimasaku, Kazuhiro; Momose, Rieko; Ouchi, Masami; Nakajima, Kimihiko; Hashimoto, Takuya; Harikane, Yuichi; Silverman, John D.; Capak, Peter L.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 印刷中
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Surface density: a new parameter in the fundamental metallicity relation of star-forming galaxies (2018)
  • Author(s): Hashimoto Tetsuya、Goto Tomotsugu、Momose Rieko
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 475 Issue: 4 Pages: 4424-4433
  • DOI: 10.1093/mnras/sty113
  • Peer Reviewed / Int'l Joint Research
• [Presentation] The Diversity of IGM-galaxy connection among galaxies at redshift z = 2-3 (2022)
  • Author(s): Rieko Momose
  • Organizer: Cosmic Cartography 2022: Exploring the Cosmic Web and Large-Scale Structure
  • Int'l Joint Research
• [Presentation] The diversity of IGM-galaxy connection at redshift z = 2-3 (2021)
  • Author(s): Rieko Momose
  • Organizer: 日本天文学会 2021年秋季年会
• [Presentation] The diversity of IGM-galaxy connection at redshift z=2-3 (2021)
  • Author(s): Rieko Momose
  • Organizer: Galaxy-IGM workshop 2021
• [Presentation] What can we learn about the IGM-galaxy connection from 3D tomography map? (2019)
  • Author(s): Rieko Momose
  • Organizer: Subaru Telescope 20th Anniversary Conference
  • Int'l Joint Research
• [Presentation] Diffuse Lyα halos around galaxies at z > 6 (2019)
  • Author(s): Rieko Momose
  • Organizer: 面分光研究会2019
• [Presentation] What can we learn about the IGM-galaxy connection from a 3D tomography map? (2019)
  • Author(s): Rieko Momose
  • Organizer: SKA-Japan シンポジウム 2019
• [Presentation] Lyα Halos around quasars at z > 6 (2019)
  • Author(s): Rieko Momose
  • Organizer: 日本天文学会秋季年会
• [Presentation] Lyα Halos around quasars at z > 6 (2019)
  • Author(s): Rieko Momose
  • Organizer: NEP Meeting 2019
  • Int'l Joint Research / Invited
• [Presentation] Lyman alpha halos around quasars at z > 6 (2019)
  • Author(s): Rieko Momose
  • Organizer: Extremely Big Eyes on the Early Universe 2019 (Kavli IPMU)
  • Int'l Joint Research
• [Presentation] The evolution of the circum-galactic medium around QSOs with QSO age and cosmic time revealed by Lyα halos (2019)
  • Author(s): Rieko Momose
  • Organizer: Subaru Users Meeting FY2018
• [Presentation] Intensity Mapping around QSOs (2018)
  • Author(s): Rieko Momose
  • Organizer: 輝線 Intensity Mapping 研究会 2018
• [Remarks] “かくれんぼ” をしている銀河の発見
  • URL: https://www.s.u-tokyo.ac.jp/ja/press/2021/7356/
• [Remarks] 研究室の扉「銀河のかくれんぼ」百瀬莉恵子特任研究員
  • URL: https://www.youtube.com/watch?v=sWCiJpMnKAw