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2018 Fiscal Year Annual Research Report

Study of cosmic star formation history based on an unbiased survey of mm/submm-wave emission line galaxies

Research Project

Project/Area Number 17H06130
Research InstitutionThe University of Tokyo

Principal Investigator

河野 孝太郎  東京大学, 大学院理学系研究科(理学部), 教授 (80321587)

Co-Investigator(Kenkyū-buntansha) 川邊 良平  国立天文台, 電波研究部, 教授 (10195141)
田村 陽一  名古屋大学, 理学研究科, 准教授 (10608764)
成瀬 雅人  埼玉大学, 理工学研究科, 助教 (10638175)
上田 佳宏  京都大学, 理学研究科, 准教授 (10290876)
Project Period (FY) 2017-05-31 – 2022-03-31
Keywordsミリ波サブミリ波 / 宇宙星形成史 / 輝線銀河 / ダスト / 超伝導
Outline of Annual Research Achievements

研究2年次となる平成30年度は、オンチップ型超伝導分光器DESHIMA(技術実証モデル)をASTE望遠鏡に搭載して前年に行った概念実証観測の成功を受け、得られた観測データの詳細な解析を進めると共に、そこで明らかになってきた技術的課題に対する検討、また、新たに得られた超伝導回路に対する知見に基づき、設計の改良や読み出し回路の設計検討および導入、またメキシコにある大型(口径50m)のミリ波望遠鏡LMTへ搭載する多画素版DESHIMA(MOSAIC)の開発を進めた。
取得した観測データの詳細解析では、観測の感度や諸特性を決めている要因の詳しい検討を行った。実測されたpoint spread function(ビーム)の形状に見出された非対称性は、常温光学系に起因することが分かった。また、1/fノイズの振る舞いが実験室での測定と異なるなどの理解も進んだ。また、解析ソフトウエア De:code の開発・実装を進めるとともに、新しい概念の分光装置を活かすための観測手法およびデータ較正手法の最適化とその実装も進めた。
こうした検討を踏まえ、改良モデルDESHIMA 2.0 の仕様を策定し、その開発を進めた。DESHIMA2.0では、220 GHzから440 GHzという1オクターブを一挙に分光する。これにより、[CII] 158um輝線を使って赤方偏移 z = 3.3 - 7.6 の範囲にあるダストに覆われた爆発的星形成銀河の分光赤方偏移を1ショットで決定できる。これはLMTへ搭載する多画素版DESHIMAの開発の基盤にもなるものである。また、メキシコ現地を訪問し、搭載に向けた関係者との討議も引き続き行った。
ALMA等を使った観測研究では、GOODS-S領域での45時間を投入した大規模掃天観測に基づく複数の論文出版に加え、多くの成果を論文として発表することができた。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

オンチップ超伝導分光システムDESHIMAの技術実証モデルをASTE望遠鏡に搭載して行った試験観測のデータ解析が着実に進展しており、その成果の出版準備が進んでいる。また、望遠鏡に搭載して天体信号を受信することで明らかになった問題点や新たな知見に基づき、超伝導回路の設計改良や読み出し回路システムの導入も引き続き進んでいる。ALMAを用いた大規模な遠方銀河探査についても、重力レンズ銀河団を探査するALMA大型プログラムが採択され、データが到着し始めており、超広帯域分光システムを用いた観測と相補的な成果が着実に得られている。また、最終的に装置を持ち込む予定のメキシコを訪問し、打ち合わせを進めている。こうしたことから、本課題は着実に進展していると判断している。

Strategy for Future Research Activity

引き続き、ASTE望遠鏡で得た成果の論文発表を急ぐとともに、その知見を踏まえた設計の改良、また、多画素版DESHIMA(MOSAIC)の開発や、実験室での評価実験を進めていく。メキシコでの活動については、安全面を最重要なポイントとして無理はせず、慎重に進めていく予定である。

  • Research Products

    (40 results)

All 2019 2018 Other

All Int'l Joint Research (6 results) Journal Article (16 results) (of which Int'l Joint Research: 16 results,  Peer Reviewed: 16 results) Presentation (16 results) (of which Int'l Joint Research: 13 results,  Invited: 11 results) Remarks (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] TU Delft/SRON/University of Groningen(オランダ)

    • Country Name
      NETHERLANDS
    • Counterpart Institution
      TU Delft/SRON/University of Groningen
  • [Int'l Joint Research] University of Massachusetts/National Radio Astronomy Observatory/University of Azirona(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      University of Massachusetts/National Radio Astronomy Observatory/University of Azirona
  • [Int'l Joint Research] University of Edinburgh(英国)

    • Country Name
      UNITED KINGDOM
    • Counterpart Institution
      University of Edinburgh
  • [Int'l Joint Research] CEA Saclay(フランス)

    • Country Name
      FRANCE
    • Counterpart Institution
      CEA Saclay
  • [Int'l Joint Research] INAOE(メキシコ)

    • Country Name
      MEXICO
    • Counterpart Institution
      INAOE
  • [Int'l Joint Research]

    • # of Other Countries
      5
  • [Journal Article] Complex Field Mapping of Large Direct Detector Focal Plane Arrays2019

    • Author(s)
      Davis, Kristina K.; Yates, Stephen J. C.; Jellema, Willem; Groppi, Christopher E.; Baselmans, Jochem J. A.; Kohno, Kotaro; Baryshev, Andrey M.
    • Journal Title

      IEEE Transactions on Terahertz Science and Technology

      Volume: 9 Pages: 67-77

    • DOI

      10.1109/TTHZ.2018.2883820

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Kinetic Energy Transfer from X-Ray Ultrafast Outflows to Millimeter/Submillimeter Cold Molecular Outflows in Seyfert Galaxies2019

    • Author(s)
      Mizumoto, Misaki; Izumi, Takuma; Kohno, Kotaro
    • Journal Title

      The Astrophysical Journal

      Volume: 871 Pages: 156 (1-10)

    • DOI

      10.3847/1538-4357/aaf814

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Excitation State of Galactic Diffuse Molecular Gas, Investigated with ALMA Observations of Multi-transition Absorption Lines2019

    • Author(s)
      Ando, Ryo; Kohno, Kotaro; Umehata, Hideki; Izumi, Takuma; Ishii, Shun; Nishimura, Yuri; Sorai, Kazuo; Tosaki, Tomoka; Taniguchi, Akio; Tamura, Yoichi
    • Journal Title

      The Astrophysical Journal

      Volume: 871 Pages: 256 (1-7)

    • DOI

      10.3847/1538-4357/aafa6f

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Detection of the Far-infrared [O III] and Dust Emission in a Galaxy at Redshift 8.312: Early Metal Enrichment in the Heart of the Reionization Era2019

    • Author(s)
      Tamura, Y., Mawatari, K., Hashimoto, T., Inoue, A., et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 874 Pages: 27 (1-13)

    • DOI

      10.3847/1538-4357/ab0374

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The onset of star formation 250 million years after the Big Bang2018

    • Author(s)
      Hashimoto, T., Laporte, N., Mawatari, K.,Ellis, R. S., Inoue, A. K., Zackrisson, E. Roberts-Borsani, G., Tamura, Y. (24人中9番目), 他16名
    • Journal Title

      Nature

      Volume: 557 Pages: 392-395

    • DOI

      10.1038/s41586-018-0117-z

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). III. Star formation properties of the host galaxies at z > 6 studied with ALMA2018

    • Author(s)
      Izumi, T., Onoue, M., Shirakata, H., Nagao, T., Kohno, K. (29人中5番目), Matsuoka, Y., Tamura, Y. (29人中18番目), 他20名
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Pages: 37 (1-21)

    • DOI

      10.1093/pasj/psy026

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] ALMA 26 Arcmin2 Survey of GOODS-S at One Millimeter (ASAGAO): Average Morphology of High-z Dusty Star-forming Galaxies in an Exponential Disk (n ~ 1)2018

    • Author(s)
      Fujimoto, S., Ouchi, M., K Kohno, K. (46人中3番目), Yamaguchi, Y., Hatsukade, B., Ueda, Y., Shibuya, T., Tamura, Y. (46人中45番目), 他38名
    • Journal Title

      The Astrophysical Journal

      Volume: 861 Pages: 7 (1-12)

    • DOI

      10.3847/1538-4357/aac6c4

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The gravitationally unstable gas disk of a starburst galaxy 12 billion years ago2018

    • Author(s)
      Tadaki, K.; Iono, D.; Yun, M. S.; Aretxaga, I.; Hatsukade, B.; Hughes, D. H.; Ikarashi, S.; Izumi, T.; Kawabe, R.; Kohno, K.; Lee, M.; Matsuda, Y.; Nakanishi, K.; Saito, T.; Tamura, Y.; 他6名
    • Journal Title

      Nature

      Volume: 560 Pages: 613-616

    • DOI

      10.1038/s41586-018-0443-1

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] ALMA deep field in SSA22: Survey design and source catalog of a 20 arcmin2 survey at 1.1 mm2018

    • Author(s)
      Umehata, Hideki; Hatsukade, Bunyo; Smail, Ian; Alexander, David M.; Ivison, Rob J.; Matsuda, Yuichi; Tamura, Yoichi; Kohno, Kotaro; Kato, Yuta; Hayatsu, Natsuki H.; Kubo, Mariko; Ikarashi, Soh
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Pages: 65 (1-14)

    • DOI

      10.1093/pasj/psy065

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Cool Core Disturbed: Observational Evidence for the Coexistence of Subsonic Sloshing Gas and Stripped Shock-heated Gas around the Core of RX J1347.5-11452018

    • Author(s)
      Ueda, Shutaro; Kitayama, Tetsu; Oguri, Masamune; Komatsu, Eiichiro; Akahori, Takuya; Iono, Daisuke; Izumi, Takumi; Kawabe, Ryohei; Kohno, Kotaro; Matsuo, Hiroshi; Ota, Naomi; Suto, Yasushi; Takakuwa, Shigehisa; Takizawa, Motokazu; Tsutsumi, Takahiro; Yoshikawa, Kohji
    • Journal Title

      The Astrophysical Journal

      Volume: 866 Pages: 48 (1-13)

    • DOI

      10.3847/1538-4357/aadd9d

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] AzTEC 1.1 mm observations of high-z protocluster environments: SMG overdensities and misalignment between AGN jets and SMG distribution2018

    • Author(s)
      Zeballos, M.; Aretxaga, I.; Hughes, D. H.; et al.
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 479 Pages: 4577-4632

    • DOI

      10.1093/mnras/sty1714

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A high dust emissivity index β for a CO-faint galaxy in a filamentary Lyα nebula at z = 3.12018

    • Author(s)
      Kato, Yuta; Matsuda, Yuichi; Iono, Daisuke; et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Pages: L6 (1-6)

    • DOI

      10.1093/pasj/psy087

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Circumnuclear Multiphase Gas in the Circinus Galaxy. II. The Molecular and Atomic Obscuring Structures Revealed with ALMA2018

    • Author(s)
      Izumi, Takuma; Wada, Keiichi; Fukushige, Ryosuke; Hamamura, Sota; Kohno, Kotaro
    • Journal Title

      The Astrophysical Journal

      Volume: 867 Pages: 48 (1-20)

    • DOI

      10.3847/1538-4357/aae20b

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Dust-selected Molecular Clouds in the Northeast Region of the Small Magellanic Cloud2018

    • Author(s)
      Takekoshi, T., Minamidani, T., Komugi S., Kohno, K., Tosaki, T., Sorai, K., et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 867 Pages: 117 (1-13)

    • DOI

      10.3847/1538-4357/aae48b

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Revealing the Environmental Dependence of Molecular Gas Content in a Distant X-Ray Cluster at z = 2.512018

    • Author(s)
      Wang, T., Elbaz, D., Daddi, E., Liu, D., Kodama, T., Tanaka, K., et al.
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 867 Pages: L29 (1-7)

    • DOI

      10.3847/2041-8213/aaeb2c

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] ALMA twenty-six arcmin2 survey of GOODS-S at one millimeter (ASAGAO): Source catalog and number counts2018

    • Author(s)
      Hatsukade, B., Kohno, K., Yamaguchi, Y., Umehata, H., et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Pages: 105 (1-20)

    • DOI

      10.1093/pasj/psy104

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Python tools and tips for facilitating data analysis of nearby galaxies2019

    • Author(s)
      Taniguchi, A.
    • Organizer
      ALMA Workshop for Nearby Galaxies: Science and Techniques
    • Int'l Joint Research / Invited
  • [Presentation] MOSAIC on LMT as a precursor of blind line emitter search with large single dishes2019

    • Author(s)
      Kohno, K.
    • Organizer
      International Workshop on Submillimeter Astronomy
    • Int'l Joint Research / Invited
  • [Presentation] High-z Cosmology via CO/[CII]/[OIII] Tomography with the Large Submillimeter Telescope2019

    • Author(s)
      Tamura, Y.
    • Organizer
      International Workshop on Submillimeter Astronomy
    • Int'l Joint Research / Invited
  • [Presentation] 超伝導力学インダクタンス検出器の応用例2019

    • Author(s)
      成瀬雅人
    • Organizer
      2018年度電子情報通信学会総合大会
    • Invited
  • [Presentation] Far-Infrared Nebular Emission Receiver2019

    • Author(s)
      Tamura, Y.
    • Organizer
      Power of Wideband Receiver: Exploring Sciences at 7mm Wavelength with Large Single Dish Telescopes
    • Int'l Joint Research / Invited
  • [Presentation] ALMA Reveals Early Metal Enrichment in the Epoch of Reinization2019

    • Author(s)
      田村陽一
    • Organizer
      SKA 研究会「銀河進化と遠方宇宙」2019
    • Invited
  • [Presentation] Radio-to-(sub)millimeter observations of astrophysical plasmas2018

    • Author(s)
      Kohno, K.
    • Organizer
      12th International Conference on High Energy Density Laboratory Astrophysics
    • Int'l Joint Research / Invited
  • [Presentation] ALMA Reveals the Early Dust Enrichment in a Galaxy in the Reionization Era2018

    • Author(s)
      Tamura, Y.
    • Organizer
      Latin America - Japan Academic Forum 2018
    • Int'l Joint Research / Invited
  • [Presentation] Exploring the formation and evolution of galaxies in the early universe by exploiting the superconducting astro-photonics2018

    • Author(s)
      Kohno, K.
    • Organizer
      International Colloquium of Mexican and Japanese Studies
    • Int'l Joint Research / Invited
  • [Presentation] テラヘルツ波を用いた光計測および分光計測の天体物理学分野における最前線2018

    • Author(s)
      河野孝太郎
    • Organizer
      テラヘルツ科学の最先端V
    • Invited
  • [Presentation] Superconducting submicron-CPW resonators for on-chip THz filterbank2018

    • Author(s)
      Naruse, M.
    • Organizer
      The 31st International Symposium on Superconductivity
    • Int'l Joint Research / Invited
  • [Presentation] B4R (Band-4 receiver on LMT) and Future upgrade2018

    • Author(s)
      Kawabe, R.
    • Organizer
      Guillermo Haro 2018 Workshop: Synergy between GTC and GTM/LMT
    • Int'l Joint Research
  • [Presentation] CO/[CII] Tomography with the Large Submillimeter Telescope2018

    • Author(s)
      Tamura, Y.
    • Organizer
      Atacama Large Aperture Submillimeter Telescope (AtLAST) Workshop 2018
    • Int'l Joint Research
  • [Presentation] ALMA deep surveys on CANDELS fields2018

    • Author(s)
      Kohno, K.
    • Organizer
      The Universe by the Light of CANDELS: Past and Future
    • Int'l Joint Research
  • [Presentation] ALMA Detections of the Far-infrared [O III] and Dust Emission in a Galaxy at z = 8.312: Early Metal Enrichment in the Heart of the Reionization Era2018

    • Author(s)
      Tamura, Y.
    • Organizer
      International Astronomical Union Symposium No. 341: PanModel 2018 - Challenges in Panchromatic Galaxy Modelling with Next Generation Facilities
    • Int'l Joint Research
  • [Presentation] Characterization of dusty galaxies uncovered by ALMA 26 arcmin2 survey of GOODS-S at one-millimeter (ASAGAO)2018

    • Author(s)
      Kohno, K.
    • Organizer
      International Astronomical Union Symposium No. 341: PanModel 2018 - Challenges in Panchromatic Galaxy Modelling with Next Generation Facilities
    • Int'l Joint Research
  • [Remarks]

    • URL

      http://www.ioa.s.u-tokyo.ac.jp/~kkohno/index-j.html

  • [Funded Workshop] International Workshop on Submillimeter Astronomy2019

URL: 

Published: 2021-01-27  

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