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2019 Fiscal Year Annual Research Report

Earth-like Planet Search on the Subaru Telescope

Research Project

Project/Area Number 15H02063
Research InstitutionThe University of Tokyo

Principal Investigator

田村 元秀  東京大学, 大学院理学系研究科(理学部), 教授 (00260018)

Co-Investigator(Kenkyū-buntansha) 小谷 隆行  大学共同利用機関法人自然科学研究機構(新分野創成センター、アストロバイオロジーセンター、生命創成探究, アストロバイオロジーセンター, 助教 (40554291)
Project Period (FY) 2015-04-01 – 2020-03-31
Keywords系外惑星 / 赤外線 / 地球型惑星 / 視線速度法 / 光周波数コム / M型星
Outline of Annual Research Achievements

本研究では、新規に開発した世界最高精度のすばる用赤外線ドップラー分光器IRDを用い、主として後期M型星(赤色矮星)の周りのハビタブル地球型惑星を多数検出するための集中的観測を遂行する。また、関連する系外惑星の研究やフォローアップ観測を展開する。装置として完成した近赤外ドップラー観測機器IRDを用いて、すばる望遠鏡における戦略枠観測および一般共同利用観測による系外惑星の観測を推進した。天候およびマウナケア現地問題による観測が実行できないこともあったが、装置トラブルにより観測ができない場面は無く、順調に観測が行えるようになっている。今年度は、装置単体では短期間に1m/s以下、恒星の固有の速度変動を含んで約2m/s以下という速度決定精度の、年単位での長期安定性を実証した。また、赤外線分光器および光周波数コムの長期にわたる安定運用も進めることができた。さらに、すばる望遠鏡における30夜程度の戦略枠観測を継続して遂行した。さらに、本サーベイ観測を効率的に遂行するための、画像解析パイプラインの一次処理および二次処理の統合化と視線速度測定用解析ソフトウェア、大気組成解析などの、高分散分光スペクトルを用いて行える研究の手法の構築も進めた。その結果、今後集中観測を進めるべき地球型惑星候補のターゲットを選定できた。さらに、近傍M型星まわりの地球型惑星系であるトラピスト1惑星系のロシター効果の測定や、若いトランジット惑星の質量上限をこれまでの可視光分光観測より精度良く決定することにも成功した。また、系外惑星に関する国際会議「In the Spirit of Lyot 2019」を東京で開催し、200名の研究者が国内外から参加した。

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

  • Research Products

    (38 results)

All 2020 2019 Other

All Int'l Joint Research (4 results) Journal Article (23 results) (of which Int'l Joint Research: 23 results,  Peer Reviewed: 23 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 5 results,  Invited: 4 results) Remarks (2 results) Funded Workshop (1 results)

  • [Int'l Joint Research] プリンストン大学/ハワイ大学/アリゾナ大学(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      プリンストン大学/ハワイ大学/アリゾナ大学
    • # of Other Institutions
      12
  • [Int'l Joint Research] マックスプランク研究所(ドイツ)

    • Country Name
      GERMANY
    • Counterpart Institution
      マックスプランク研究所
  • [Int'l Joint Research] 南アフリカ天文台(南アフリカ)

    • Country Name
      SOUTH AFRICA
    • Counterpart Institution
      南アフリカ天文台
  • [Int'l Joint Research] トロント大学(カナダ)

    • Country Name
      CANADA
    • Counterpart Institution
      トロント大学
  • [Journal Article] Near-infrared Imaging of a Spiral in the CQ Tau Disk2020

    • Author(s)
      Uyama Taichi、Muto Takayuki、Mawet Dimitri, et al. (31名中27番目)
    • Journal Title

      The Astronomical Journal

      Volume: 159 Pages: 118~118

    • DOI

      10.3847/1538-3881/ab7006

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Evidence for Spin-Orbit Alignment in the TRAPPIST-1 System2020

    • Author(s)
      Hirano Teruyuki、Gaidos Eric、Winn Joshua N., et al. (24名中8番目)
    • Journal Title

      The Astrophysical Journal

      Volume: 890 Pages: L27~L27

    • DOI

      10.3847/2041-8213/ab74dc

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High-resolution Near-infrared Polarimetry and Submillimeter Imaging of FS Tau A: Possible Streamers in Misaligned Circumbinary Disk System2020

    • Author(s)
      Yang Yi、Akiyama Eiji、Currie Thayne, et al.(59名中59番目)
    • Journal Title

      The Astrophysical Journal

      Volume: 889 Pages: 140~140

    • DOI

      10.3847/1538-4357/ab64f9

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Atmospheric Characterization and Further Orbital Modeling of κ Andromeda b2020

    • Author(s)
      Uyama Taichi、Currie Thayne、Hori Yasunori, et al.(22名中13番目)
    • Journal Title

      The Astronomical Journal

      Volume: 159 Pages: 40~40

    • DOI

      10.3847/1538-3881/ab5afa

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] MuSCAT2 multicolour validation of TESS candidates: an ultra-short-period substellar object around an M dwarf2020

    • Author(s)
      Parviainen H.、Palle E.、Zapatero-Osorio M. R., et al.(40名中22番目)
    • Journal Title

      Astronomy & Astrophysics

      Volume: 633 Pages: A28~A28

    • DOI

      10.1051/0004-6361/201935958

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Subaru Near-infrared Imaging Polarimetry of Misaligned Disks around the SR 24 Hierarchical Triple System2019

    • Author(s)
      Mayama Satoshi、Perez Sebastien、Kusakabe Nobuhiko, et al.(69名中69番目)
    • Journal Title

      The Astronomical Journal

      Volume: 159 Pages: 12~12

    • DOI

      10.3847/1538-3881/ab5850

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Radial velocity confirmation of K2-100b: a young, highly irradiated, and low-density transiting hot Neptune2019

    • Author(s)
      Barragan O、Aigrain S、Kubyshkina D., et al.(40名中40番目)
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 490 Pages: 698~708

    • DOI

      10.1093/mnras/stz2569

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Kojima-1Lb Is a Mildly Cold Neptune around the Brightest Microlensing Host Star2019

    • Author(s)
      Fukui A.、Suzuki D.、Koshimoto N.,(60名中60番目)
    • Journal Title

      The Astronomical Journal

      Volume: 158 Pages: 206~206

    • DOI

      10.3847/1538-3881/ab487f

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Near-resonance in a System of Sub-Neptunes from TESS2019

    • Author(s)
      Quinn Samuel N.、Becker Juliette C.、Rodriguez Joseph E., et al.(81名中77番目)
    • Journal Title

      The Astronomical Journal

      Volume: 158 Pages: 177~177

    • DOI

      10.3847/1538-3881/ab3f2b

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] IC 4665 DANCe2019

    • Author(s)
      Miret-Roig N.、Bouy H.、Olivares J.、Sarro L. M.、Tamura M.、Allen L.、Bertin E.、Serre S.、Berihuete A.、Beletsky Y.、Barrado D.、Huelamo N.、Cuillandre J.-C.、Moraux E.、Bouvier J.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 631 Pages: A57~A57

    • DOI

      10.1051/0004-6361/201935518

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Multicolour photometry for exoplanet candidate validation2019

    • Author(s)
      Parviainen H.、Tingley B.、Deeg H. J.、Palle E.、Alonso R.、Montanes Rodriguez P.、Murgas F.、Narita N.、Fukui A.、Watanabe N.、Kusakabe N.、Tamura M.、Nishiumi T.、Prieto-Arranz J.、Klagyivik P.、Bejar V. J. S.、Crouzet N.、Mori M.、Hidalgo Soto D.、Casasayas Barris N.、Luque R.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 630 Pages: A89~A89

    • DOI

      10.1051/0004-6361/201935709

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Super-Earth and Sub-Neptune Transiting the Late-type M Dwarf LP 791-182019

    • Author(s)
      Crossfield Ian J. M.、Waalkes William、Newton Elisabeth R., et al.(60名中48番目)
    • Journal Title

      The Astrophysical Journal

      Volume: 883 Pages: L16~L16

    • DOI

      10.3847/2041-8213/ab3d30

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Greening of the brown-dwarf desert2019

    • Author(s)
      Persson Carina M.、Csizmadia Szilerd、Mustill Alexander J., et al.(58名中58番目)
    • Journal Title

      Astronomy & Astrophysics

      Volume: 628 Pages: A64~A64

    • DOI

      10.1051/0004-6361/201935505

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Planetary system around the nearby M dwarf GJ 357 including a transiting, hot, Earth-sized planet optimal for atmospheric characterization2019

    • Author(s)
      Luque R.、Palle E.、Kossakowski D., et al.(76名中76番目)
    • Journal Title

      Astronomy & Astrophysics

      Volume: 628 Pages: A39~A39

    • DOI

      10.1051/0004-6361/201935801

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Chromaticity Analysis and PSF Subtraction Techniques for SCExAO/CHARIS Data2019

    • Author(s)
      Gerard Benjamin L.、Marois Christian、Currie Thayne、Brandt Timothy、Chilcote Jeffrey K.、Draper Zachary H.、Groff Tyler、Guyon Olivier、Hayashi Masahiko、Jovanovic Nemanja、Knapp Gillian R.、Kudo Tomoyuki、Kwon Jungmi、Lozi Julien、Martinache Frantz、McElwain Michael、Tamura Motohide、Uyama Taichi
    • Journal Title

      The Astronomical Journal

      Volume: 158 Pages: 36~36

    • DOI

      10.3847/1538-3881/ab21d4

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Mass Limit for the Young Transiting Planet V1298 Tau b2019

    • Author(s)
      Beichman Charles、Hirano Teruyuki、David Trevor J.、Kotani Takayuki、Hillenbrand Lynne A.、Vasisht Gautam、Ciardi David R.、Harakawa Hiroki、Kudo Tomoyuki、Omiya Masashi、Kuzuhara Masayuki、Tamura Motohide
    • Journal Title

      Research Notes of the AAS

      Volume: 3 Pages: 89~89

    • DOI

      10.3847/2515-5172/ab2c9d

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Discovery of An au-scale Excess in Millimeter Emission from the Protoplanetary Disk around TW Hya2019

    • Author(s)
      Tsukagoshi Takashi、Muto Takayuki、Nomura Hideko、Kawabe Ryohei、Kanagawa Kazuhiro D.、Okuzumi Satoshi、Ida Shigeru、Walsh Catherine、Millar Tom J.、Takahashi Sanemichi Z.、Hashimoto Jun、Uyama Taichi、Tamura Motohide
    • Journal Title

      The Astrophysical Journal

      Volume: 878 Pages: L8~L8

    • DOI

      10.3847/2041-8213/ab224c

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Qatar Exoplanet Survey: Qatar-8b, 9b, and 10b - A Hot Saturn and Two Hot Jupiters2019

    • Author(s)
      Alsubai Khalid、Tsvetanov Zlatan I.、Pyrzas Stylianos., et al.(29名中23番目)
    • Journal Title

      The Astronomical Journal

      Volume: 157 Pages: 224~224

    • DOI

      10.3847/1538-3881/ab19bc

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] ALMA survey of Class II protoplanetary disks in Corona Australis: a young region with low disk masses2019

    • Author(s)
      Cazzoletti P.、Manara C. F.、Baobab Liu H.、van Dishoeck E. F.、Facchini S.、Alcala J. M.、Ansdell M.、Testi L.、Williams J. P.、Carrasco-Gonzalez C.、Dong R.、Forbrich J.、Fukagawa M.、Galvan-Madrid R.、Hirano N.、Hogerheijde M.、Hasegawa Y.、Muto T.、Pinilla P.、Takami M.、Tamura M.、Tazzari M.、Wisniewski J. P.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 626 Pages: A11~A11

    • DOI

      10.1051/0004-6361/201935273

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] No Clear, Direct Evidence for Multiple Protoplanets Orbiting LkCa 15: LkCa 15 bcd are Likely Inner Disk Signals2019

    • Author(s)
      Currie Thayne、Marois Christian、Cieza Lucas et al.,(33名中18番目
    • Journal Title

      The Astrophysical Journal

      Volume: 877 Pages: L3~L3

    • DOI

      10.3847/2041-8213/ab1b42

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ruprecht 147 DANCe2019

    • Author(s)
      Olivares J.、Bouy H.、Sarro L. M.、Miret-Roig N.、Berihuete A.、Bertin E.、Barrado D.、Huelamo N.、Tamura M.、Allen L.、Beletsky Y.、Serre S.、Cuillandre J.-C.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 625 Pages: A115~A115

    • DOI

      10.1051/0004-6361/201834924

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Multi-epoch Direct Imaging and Time-variable Scattered Light Morphology of the HD 163296 Protoplanetary Disk2019

    • Author(s)
      Rich Evan A.、Wisniewski John P.、Currie Thayne, et al.(61名中61番目)
    • Journal Title

      The Astrophysical Journal

      Volume: 875 Pages: 38~38

    • DOI

      10.3847/1538-4357/ab0f3b

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Tail Structure Associated with a Protoplanetary Disk around SU Aurigae2019

    • Author(s)
      Akiyama Eiji、Vorobyov Eduard I.、Baobabu Liu Hauyu、Dong Ruobing、de Leon Jerome、Liu Sheng-Yuan、Tamura Motohide
    • Journal Title

      The Astronomical Journal

      Volume: 157 Pages: 165~165

    • DOI

      10.3847/1538-3881/ab0ae4

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Exploring Exoplanet and Star-Formation Studies with Subaru2019

    • Author(s)
      Motohide Tamura
    • Organizer
      Subaru Telescope 20th Anniversary Conference
    • Int'l Joint Research / Invited
  • [Presentation] Lyot 2019: Opening and Closing Remarks2019

    • Author(s)
      Motohide Tamura
    • Organizer
      In the Spirit of Lyot 2019
    • Int'l Joint Research
  • [Presentation] Development of the Extremely High-Contrast, High Spectral Resolution Spectrometer REACH for the Subaru Telescope2019

    • Author(s)
      Takayuki Kotani, Hajime Kawahara, Masato Ishizuka, Nemanja Jovanovic, Olivier Guyon, Julien Lozi, Sebastien Vievard, Ananya Sahoo, Motohide Tamura
    • Organizer
      In the Spirit of Lyot 2019
    • Int'l Joint Research / Invited
  • [Presentation] SCExAO: Current status and upgrades2019

    • Author(s)
      Julien Lozi et al.(35名中33番目)
    • Organizer
      In the Spirit of Lyot 2019
    • Int'l Joint Research / Invited
  • [Presentation] The Beginning of the Strategic Large Exploration for Exoplanets Orbiting Nearby Late-M Dwarfs with the InfraRed Doppler (IRD) Spectrograph on the Subaru Telescope2019

    • Author(s)
      Kuzuhara, Masayuki; Sato, Bun'ei; Tamura, Motohideほか(24名中3番目)
    • Organizer
      Extreme Solar Systems
    • Int'l Joint Research
  • [Presentation] TMT 時代の系外惑星観測と観測装置2019

    • Author(s)
      田村元秀
    • Organizer
      日本天文学会2019年秋季年会
    • Invited
  • [Presentation] 近赤外高分散分光器 IRD による系外惑星のトランジット分光観測2019

    • Author(s)
      平野照幸,Eric Gaidos, 葛原昌幸,小谷隆行,田村元秀,すばる/IRD チーム
    • Organizer
      日本天文学会2019年秋季年会
  • [Presentation] 地上望遠鏡による TRAPPIST-1g 大気のトランジット分光観測と解析2019

    • Author(s)
      森 万由子, 福井暁彦, 成田憲保, John Livingston, 川内紀代恵, 田村元秀
    • Organizer
      日本天文学会2019年秋季年会
  • [Remarks] 東京大学大学院理学系研究科天文学専攻

    • URL

      http://www.astron.s.u-tokyo.ac.jp/members/doa/tamura_motohide/

  • [Remarks] 自然科学研究機構アストロバイオロジーセンター

    • URL

      http://abc-nins.jp/

  • [Funded Workshop] In the Spirit of Lyot 20192019

URL: 

Published: 2021-01-27  

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