ALMAガス観測で探る銀河団環境下での実は多様な銀河星形成抑制機構

• Project/Area Number: 19J40004
• Research Category: Grant-in-Aid for JSPS Fellows
• Allocation Type: Single-year Grants
• Section: 国内
• Review Section: Basic Section 16010:Astronomy-related
• Research Institution: The University of Tokyo
• Principal Investigator: 諸隈 佳菜 東京大学, 大学院理学系研究科附属天文学教育研究センター, 特別研究員(RPD)
• Project Period (FY): 2019-04-25 – 2023-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 銀河団 / 銀河進化 / 星間物質 / 星形成 / 環境効果

Outline of Research at the Start

近傍宇宙において、高密度環境にある銀河ほど星形成活動性が低い。理論的に予想されている銀河団における星形成抑制機構は「重力相互作用」と「ホットハローガスとの相互作用」に大別される。観測的には、後者の中でも特に、ラム圧による銀河星間ガスの剥ぎ取りや、銀河ハローガスの剥ぎ取り・加熱に伴う銀河へのガス供給の枯渇 ("strangulation")を支持するものが多い。本研究では、ラム圧とstrangulationに着目し、どちらの方が卓越しているかを、異なる質量・力学状態・赤方偏移の銀河団の分子ガスデータを用いて調査し、銀河団銀河に働く星形成抑制機構と母銀河団の性質との関係を世界で初めて明らかにする。

Outline of Annual Research Achievements

2022年度は、ろ座銀河団のデータ解析・論文執筆を行った。ろ座銀河団は、おとめ座銀河団の次に、我々の近傍に位置する銀河団で、おとめ座銀河団と比べると質量は小さい、銀河団ガスは少ない、銀河団中心領域の銀河の数密度が高い、という特徴を持つ。おとめ座銀河団との比較を通して、銀河団で働く環境効果の多様性を調べる上で、重要な研究対象の一つである。
我々はALMA望遠鏡を用いて、ろ座銀河団銀河64天体に対する、世界最大のCO(J=1-0)輝線(以下、CO輝線)サーベイ観測を行い、アーカイブデータと併せて、銀河団銀河の低温ガス(原子・分子ガス)と星形成の性質を調査した。具体的には、2021年度に発表したおとめ座銀河団に対する研究と同様に、フィールド銀河との比較、銀河団銀河の低温ガス・星形成の性質と、銀河団中心からの距離、銀河数密度、位相空間上での分布位置(銀河が銀河団に落ちてきた時期の指標)との関係を調べた。
その結果以下を明らかにした：(1)ろ座銀河団銀河の低い星形成活動性は、低温ガスから星への変換効率が低いからではなく、低温ガスの量が少ないことに起因すること、(2)星形成活動性の低い、つまり、低温ガスの量が少ない銀河は、フィールド銀河と比べると特に原子ガス質量が減少していること、(3)星形成活動性が低く、低温ガスの量が少ない銀河は、銀河団中心近く・銀河団数密度が高い所に多く、またより昔に銀河団に降着してきたものが多いこと、(4)一方で、銀河の星形成効率は銀河団中心からの距離・銀河数密度・ 位相空間上での分布位置に依存しないこと。これらの結果は、ろ座銀河団においては、銀河団ガスからのラム圧と、銀河-銀河間や銀河-銀河団間の潮汐力により、分子ガスの材料となる原子ガスが剥ぎ取られ、星形成の直接の材料となる分子ガスの形成が抑制され、その結果、銀河の星形成活動性が低下した、と考えると辻褄が合う。

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] ICRAR/Australia Telescope National Facility/Western Sydney University(オーストラリア)
• [Int'l Joint Research] INAF(イタリア)
• [Int'l Joint Research] Peking University(中国)
• [Int'l Joint Research] Universidad de Granada(スペイン)
• [Int'l Joint Research] Cosmic Dawn Center(デンマーク)
• [Int'l Joint Research]
• [Journal Article] CO(J = 1-0) Mapping Survey of 64 Galaxies in the Fornax Cluster with the ALMA Morita Array (2022)
  • Author(s): Morokuma-Matsui Kana、Bekki Kenji、Wang Jing、Serra Paolo、Koyama Yusei、Morokuma Tomoki、他15名
  • Journal Title: The Astrophysical Journal Supplement Series Volume: 263 Issue: 2 Pages: 40-40
  • DOI: 10.3847/1538-4365/ac983b
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] First Detection of the Molecular Cloud Population in the Extended Ultraviolet Disk of M83 (2022)
  • Author(s): Koda Jin、Watson Linda、Combes Francoise、Rubio Monica、Boissier Samuel、Yagi Masafumi、Thilker David、Lee Amanda M、Komiyama Yutaka、Morokuma-Matsui Kana、Verdugo Celia
  • Journal Title: The Astrophysical Journal Volume: 941 Issue: 1 Pages: 3-3
  • DOI: 10.3847/1538-4357/ac9dfc
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] CO Excitation and its Connection to Star Formation at 200 pc in NGC 1365 (2022)
  • Author(s): Egusa Fumi、Gao Yulong、Morokuma-Matsui Kana、Liu Guilin、Maeda Fumiya
  • Journal Title: The Astrophysical Journal Volume: 935 Issue: 2 Pages: 64-64
  • DOI: 10.3847/1538-4357/ac8050
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] ALMA Lensing Cluster Survey: ALMA-Herschel Joint Study of Lensed Dusty Star-forming Galaxies across z ? 0.5 ? 6 (2022)
  • Author(s): Sun Fengwu et al. (incl. Kana Morokuma-Matsui)
  • Journal Title: The Astrophysical Journal Volume: 932 Issue: 2 Pages: 77-77
  • DOI: 10.3847/1538-4357/ac6e3f
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] AGN feeding and feedback in Fornax A (2021)
  • Author(s): Maccagni F. M.、Serra P.、Gaspari M.、Kleiner D.、Morokuma-Matsui K.、Oosterloo T. A.、Onodera M.、Kamphuis P.、Loi F.、Thorat K.、Ramatsoku M.、Smirnov O.、White S. V.
  • Journal Title: Astronomy & Astrophysics Volume: 656 Pages: A45-A45
  • DOI: 10.1051/0004-6361/202141143
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A VLA Survey of Late-time Radio Emission from Superluminous Supernovae and the Host Galaxies (2021)
  • Author(s): Hatsukade Bunyo、Tominaga Nozomu、Morokuma Tomoki、Morokuma-Matsui Kana、Matsuda Yuichi、Tamura Yoichi、Niinuma Kotaro、Motogi Kazuhiro
  • Journal Title: The Astrophysical Journal Volume: 922 Issue: 1 Pages: 17-17
  • DOI: 10.3847/1538-4357/ac20d5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A giant molecular cloud catalogue in the molecular disc of the elliptical galaxy NGC?5128 (Centaurus?A) (2021)
  • Author(s): Miura R E、Espada D、Hirota A、Henkel C、Verley S、Kobayashi M I N、Matsushita S、Israel F P、Vila-Vilaro B、Morokuma-Matsui K、Ott J、Vlahakis C、Peck A B、Aalto S、Hogerheijde M R、Neumayer N、Iono D、Kohno K、Takemura H、Komugi S
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 504 Issue: 4 Pages: 6198-6215
  • DOI: 10.1093/mnras/stab1210
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A phase-space view of cold-gas properties of Virgo-cluster galaxies: multiple quenching processes at work? (2021)
  • Author(s): Morokuma-Matsui Kana、Kodama Tadayuki、Morokuma Tomoki、Nakanishi Kouichiro、Koyama Yusei、Yamashita Takuji、Koyama Shuhei、Okamoto Takashi
  • Journal Title: Accepted for publication in The Astrophysical Journal Volume: －
  • Peer Reviewed
• [Journal Article] ALMA Lensing Cluster Survey: An ALMA Galaxy Signposting a MUSE Galaxy Group at z = 4.3 Behind “El Gordo” (2021)
  • Author(s): Caputi K. I.、Caminha G. B.、Fujimoto S.、Kohno K.、Sun F.、Egami E.、Deshmukh S.、Tang F.、Ao Y.、Bradley L.、Coe D.、Espada D.、Grillo C.、Hatsukade B.、Knudsen K. K.、Lee M. M.、Magdis G. E.、Morokuma-Matsui K.、Oesch P.、Ouchi M.、Rosati P.、Umehata H.、Valentino F.、Vanzella E.、Wang W.-H.、Wu J. F.、Zitrin A.
  • Journal Title: The Astrophysical Journal Volume: 908 Issue: 2 Pages: 146-146
  • DOI: 10.3847/1538-4357/abd4d0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A MeerKAT view of pre-processing in the Fornax A group (2021)
  • Author(s): Kleiner D.、Serra P.、Maccagni F. M.、Venhola A.、Morokuma-Matsui K.、Peletier R.、Iodice E.、Raj M. A.、de Blok W. J. G.、Comrie A.、J?zsa G. I. G.、Kamphuis P.、Loni A.、Loubser S. I.、Moln?r D. Cs.、Passmoor S. S.、Ramatsoku M.、Sivitilli A.、Smirnov O.、Thorat K.、Vitello F.
  • Journal Title: Astronomy & Astrophysics Volume: 648 Pages: A32-A32
  • DOI: 10.1051/0004-6361/202039898
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] ALMA Lensing Cluster Survey: Bright [C ii] 158 μm Lines from a Multiply Imaged Sub-L ? Galaxy at z = 6.0719 (2021)
  • Author(s): Fujimoto Seiji et al. (including Morokuma-Matsui Kana)
  • Journal Title: The Astrophysical Journal Volume: 911 Issue: 2 Pages: 99-99
  • DOI: 10.3847/1538-4357/abd7ec
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Variability of Late-time Radio Emission in the Superluminous Supernova PTF10hgi (2021)
  • Author(s): Hatsukade B.、Tominaga N.、Morokuma T.、Morokuma-Matsui K.、Tamura Y.、Niinuma K.、Hayashi M.、Matsuda Y.、Motogi K.
  • Journal Title: The Astrophysical Journal Letters Volume: 911 Issue: 1 Pages: L1-L1
  • DOI: 10.3847/2041-8213/abef03
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] CO Multi-line Imaging of Nearby Galaxies (COMING). X. Physical conditions of molecular gas and the local SFR&-mass relation (2020)
  • Author(s): Morokuma-Matsui, Kana; Sorai, Kazuo; Sato, Yuya; Kuno, Nario; Takeuchi, Tsutomu T.; Salak, Dragan; Miyamoto, Yusuke; Yajima, Yoshiyuki; Muraoka, Kazuyuki; Kaneko, Hiroyuki
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 72 Issue: 5
  • DOI: 10.1093/pasj/psaa084
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spatially resolved molecular gas properties of host galaxy of Type I superluminous supernova SN?2017egm (2020)
  • Author(s): Hatsukade Bunyo、Morokuma-Matsui Kana、Hayashi Masao、Tominaga Nozomu、Tamura Yoichi、Niinuma Kotaro、Motogi Kazuhiro、Morokuma Tomoki、Matsuda Yuichi
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 72 Issue: 4 Pages: 6-6
  • DOI: 10.1093/pasj/psaa052
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The recurrent nuclear activity of Fornax A and its interaction with the cold gas (2020)
  • Author(s): Maccagni F. M.、Serra P.、Murgia M.、Govoni F.、Morokuma-Matsui K.、Kleiner D.
  • Journal Title: Proceedings of the International Astronomical Union Volume: 15 Issue: S359 Pages: 141-146
  • DOI: 10.1017/s1743921320004287
  • Int'l Joint Research
• [Journal Article] The flickering nuclear activity of Fornax A (2020)
  • Author(s): Maccagni F. M.、Murgia M.、Serra P.、Govoni F.、Morokuma-Matsui K.、Kleiner D.、Buchner S.、J?zsa G. I. G.、Kamphuis P.、Makhathini S.、Moln?r D. Cs.、Prokhorov D. A.、Ramaila A.、Ramatsoku M.、Thorat K.、Smirnov O.
  • Journal Title: Astronomy & Astrophysics Volume: 634 Pages: A9-A9
  • DOI: 10.1051/0004-6361/201936867
  • 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] Complex distribution and velocity field of molecular gas in NGC 1316 as revealed by the Morita Array of ALMA (2019)
  • Author(s): Morokuma-Matsui Kana、Serra Paolo、Maccagni Filippo M、For Bi-Qing、Wang Jing、Bekki Kenji、Morokuma Tomoki、Egusa Fumi、Espada Daniel、Miura Rie E、Nakanishi Kouichiro、Koribalski B?rbel S、Takeuchi Tsutomu T
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Issue: 4 Pages: 85-85
  • DOI: 10.1093/pasj/psz067
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Star Formation Efficiencies at Giant Molecular Cloud Scales in the Molecular Disk of the Elliptical Galaxy NGC 5128 (Centaurus A) (2019)
  • Author(s): Espada D.、Verley S.、Miura R. E.、Israel F. P.、Henkel C.、Matsushita S.、Vila-Vilaro B.、Ott J.、Morokuma-Matsui K.、Peck A. B.、Hirota A.、Aalto S.、Quillen A. C.、Hogerheijde M. R.、Neumayer N.、Vlahakis C.、Iono D.、Kohno K.
  • Journal Title: The Astrophysical Journal Volume: 887 Issue: 1 Pages: 88-88
  • DOI: 10.3847/1538-4357/ab262d
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] CO Multi-line Imaging of Nearby Galaxies (COMING). III. Dynamical effect on molecular gas density and star formation in the barred spiral galaxy NGC 4303 (2019)
  • Author(s): Yajima, Y.; Sorai, K.; Kuno, N.; Muraoka, K.; Miyamoto, Y.; Kaneko, H.; Nakanishi, H.; Nakai, N.; Tanaka, T.; Sato, Y.; Salak, D.; Morokuma-Matsui, K.; Matsumoto, N.; Pan, H-A; Noma, Y.; Takeuchi, T. T.; Yoda, M.; Kuroda, M.; Yasuda, A.; Oi, N.; Shibata, S.; Seta, M.; Watanabe, Y.; Kita, S.; Komatsuzaki, R. et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 印刷中 Issue: Supplement_1 Pages: 13-13
  • DOI: 10.1093/pasj/psz022
  • NAID: 120007097364
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] CO multi-line imaging of nearby galaxies (COMING). IV. Overview of the project (2019)
  • Author(s): Sorai Kazuo, Kuno Nario, Muraoka Kazuyuki, Miyamoto Yusuke, Kaneko Hiroyuki, Nakanishi Hiroyuki, 他33名
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Issue: Supplement_1 Pages: 14-14
  • DOI: 10.1093/pasj/psz115
  • NAID: 120006937034
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] CO Multi-line Imaging of Nearby Galaxies (COMING). VI. Radial variations in star formation efficiency (2019)
  • Author(s): Muraoka Kazuyuki、Sorai Kazuo、Miyamoto Yusuke、Yoda Moe、Morokuma-Matsui Kana、et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Issue: Supplement_1 Pages: 15-15
  • DOI: 10.1093/pasj/psz015
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] CO Multi-line Imaging of Nearby Galaxies (COMING). VII. Fourier decomposition of molecular gas velocity fields and bar pattern speed (2019)
  • Author(s): Salak, D.; Noma, Y.; Sorai, K.; Miyamoto, Y.; Kuno, N.; Pettitt, A. R.; Kaneko, H.; Tanaka, T.; Yasuda, A.; Kita, S.; Yajima, Y.; Shibata, S.; Nakai, N.; Seta, M.; Muraoka, K.; Kuroda, M.; Nakanishi, H.; Takeuchi, T. T.; Yoda, M.; Morokuma-Matsui, K.; Watanabe, Y.; Matsumoto, N.; Oi, N.; Pan, H-A. et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 印刷中 Issue: Supplement_1 Pages: 16-16
  • DOI: 10.1093/pasj/psz004
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Do Galaxy Morphologies Really Affect the Efficiency of Star Formation During the Phase of Galaxy Transition? (2019)
  • Author(s): Koyama Shuhei、Koyama Yusei、Yamashita Takuji、Hayashi Masao、Matsuhara Hideo、Nakagawa Takao、Namiki Shigeru V.、Suzuki Tomoko L.、Fukagawa Nao、Kodama Tadayuki、Lin Lihwai、Morokuma-Matsui Kana、Shimakawa Rhythm、Tanaka Ichi
  • Journal Title: The Astrophysical Journal Volume: 874 Issue: 2 Pages: 142-142
  • DOI: 10.3847/1538-4357/ab0e75
  • Peer Reviewed / Int'l Joint Research
• [Presentation] CO(J=1-0) mapping survey of 64 Fornax galaxies with the ALMA Morita array (2022)
  • Author(s): Kana Morokuma, Jing Wang, Kenji Bekki, Yusei Koyama, Minju Lee, Kouichiro Nakanishi, Paolo Serra, Tadayuki Kodama, Tsutomu T. Takeuchi, Baerbel Koribalski, Shuhei Koyama, Tomoki Morokuma, Takuji Yamashita, Fumi Egusa, Bi-Qing For
  • Organizer: 2022 Spring Annual Meeting, Astronomical Society of Japan
• [Presentation] First Detection of the Molecular Cloud Population in the Extended Ultraviolet (XUV) Disk of M83 (2022)
  • Author(s): Kana Morokuma
  • Organizer: Molecules in Extreme Environment: Near and Far
  • Int'l Joint Research
• [Presentation] CO(J=1-0) mapping survey of 64 Fornax galaxies with the ALMA Morita array (2022)
  • Author(s): Kana Morokuma, Jing Wang, Kenji Bekki, Yusei Koyama, Minju Lee, Kouichiro Nakanishi, Paolo Serra, Tadayuki Kodama, Tsutomu T. Takeuchi, Baerbel Koribalski, Shuhei Koyama, Tomoki Morokuma, Takuji Yamashita, Fumi Egusa, Bi-Qing For
  • Organizer: ALMA/45m/ASTE Users Meeting 2022
• [Presentation] 居住環境が銀河の低温星間物質・星形成の性質に与える影響 (2020)
  • Author(s): 諸隈佳菜
  • Organizer: 第50回天文・天体物理若手夏の学校
  • Invited
• [Presentation] Multiphase properties of ISM in a nearby radio galaxy, NGC 1316 (2020)
  • Author(s): Kana Morokuma-Matsui, Paolo Serra, Filippo M. Maccagni, Bi-Qing For, Jing Wang, Kenji Bekki, Tomoki Morokuma, Fumi Egusa, Kouichiro Nakanishi, Daniel Espada, Rie, E. Miura, Baerbel Koribalski, Tsutomu T. Takeuchi
  • Organizer: 日本天文学会2020年春季年会
• [Presentation] 謎の突発現象AT2018cowの母銀河の性質: ALMA CO(J=1-0)観測 (2019)
  • Author(s): 諸隈 佳菜、諸隈 智貴、廿日出 文洋、小西 真広、冨永 望、林 将央、松田 有一、田村 陽一、新沼 浩太郎、元木 業人
  • Organizer: 日本天文学会2019年秋季年会
• [Presentation] Multi-phase ISM properties of a nearby radio galaxy NGC1316 (2019)
  • Author(s): Kana Morokuma-Matsui, Paolo Serra, Filippo M. Maccagni, Bi-Qing For, Jing Wang, Kenji Bekki, Tomoki Morokuma, Fumi Egusa, Kouichiro Nakanishi, Daniel Espada, Rie, E. Miura, Baerbel Koribalski, Tsutomu T. Takeuchi
  • Organizer: Subaru Telescope 20th Anniversary Conference
  • Int'l Joint Research