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Search for unseen massive objects, brown dwarfs and exoplanets in binary systems by applying an asteroseismic method to the photometric data taken with the Kepler space telescope

Research Project

Project/Area Number 16K05288
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Astronomy
Research InstitutionThe University of Tokyo

Principal Investigator

Shibahashi Hiromoto  東京大学, 大学院理学系研究科(理学部), 名誉教授 (30126081)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords星震学 / 連星 / 恒星 / 系外惑星 / ブラックホール / 脈動星 / 光学赤外線天文学 / 理論天文学 / 天文 / 宇宙物理
Outline of Final Research Achievements

We have succeeded in extremely efficiently detecting a large number of binary stars that greatly exceed the number of known binary stars from only the photometric data of type A stars by the Kepler Space Telescope. After determining their orbital elements and mass functions, we created a on-line binary catalog for open use. A lot of new knowledge about binary orbital evolution and origin was obtained by the statistical investigation based on the catalog.
In this process, we first detected a giant exoplanet in the habitable zone of A-type main sequence stars. In addition, we detected X-ray quiet black hole candidates.

Academic Significance and Societal Importance of the Research Achievements

距離が測れる近傍の連星は、宇宙を理解するための基本的な情報源である。実視連星は、軌道決定に長期の時間が必要となり、数は限定的である。食連星と分光連星の場合には、地上の望遠鏡による個々の星の分光観測が必要であり、望遠鏡の都合や天候等によるため、多大な時間と労力が必要となる。結果として、近傍で且つ軌道が決定されている連星は限定的なものであった。
ケプラー宇宙望遠鏡によるA型星の測光データのみから、大量の連星を極めて効率的に検出することに成功し、その軌道要素、質量関数カタログを作成した。これを使った統計的議論により多くの新たな知見が得られた。また、系外惑星、ブラックホール候補天体を検出した。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (36 results)

All 2020 2019 2018 2017 2016 Other

All Int'l Joint Research (11 results) Journal Article (17 results) (of which Int'l Joint Research: 17 results,  Peer Reviewed: 14 results,  Open Access: 6 results,  Acknowledgement Compliant: 1 results) Presentation (8 results) (of which Int'l Joint Research: 8 results,  Invited: 3 results)

  • [Int'l Joint Research] University of Sydney(オーストラリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Central Lancashire(英国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] University of Sydney(オーストラリア)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] University of Aarhus(デンマーク)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] KU Leuven(ベルギー)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Universidade do Porto(ポルトガル)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] The University of Sydney(オーストラリア)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] Universidad Nacional de La Plata(アルゼンチン)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] Max-Planck-Institut(ドイツ)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] New York University Abu Dhabi(アラブ首長国連邦)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] University of Central Lancashire(英国)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Search for quiet stellar-mass black holes by asteroseismology from space2020

    • Author(s)
      Shibahashi, H., Murphy, S. J.
    • Journal Title

      Proceedings of the conference "Stars and their Variability - observed from Space"

      Volume: -

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pulsation in the white dwarf HE 1017-1352: confirmation of the class of hot DAV stars2020

    • Author(s)
      Romero, A. D., Amaral, L. A., Kepler, S. O., Fraga, L, Kurtz, D., Shibahashi, H.
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: -

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Asteroseismology as a new window to statistics of binaries2019

    • Author(s)
      Shibahashi, H., Murphy, S. J.
    • Journal Title

      Bulletin de la Societe Royale des Sciences de Liege

      Volume: 88 Pages: 147-162

    • DOI

      10.25518/0037-9565.9288

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] An astrophysical interpretation of the remarkable g-mode frequency groups of the rapidly rotating γ Dor star, KIC 56083342018

    • Author(s)
      Saio, Hideyuki; Bedding, Timothy R.; Kurtz, Donald W.; Murphy, Simon J.; Antoci, Victoria L.; Shibahashi, Hiromoto; Li, Gang; Takata, Masao
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: - Issue: 2 Pages: 2183-2195

    • DOI

      10.1093/mnras/sty784

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] K2 observations of the rapidly oscillating Ap star 33 Lib (HD 137949): new frequencies and unique non-linear interactions2018

    • Author(s)
      Holdsworth Daniel L、Cunha M S、Shibahashi H、Kurtz D W、Bowman D M
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 480 Issue: 3 Pages: 2976-2984

    • DOI

      10.1093/mnras/sty2053

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Finding binaries from phase modulation of pulsating stars with Kepler: V. Orbital parameters, with eccentricity and mass-ratio distributions of 341 new binaries2018

    • Author(s)
      Simon J. Murphy, Maxwell Moe, Donald W. Kurtz, Timothy R. Bedding, Hiromoto Shibahashi, Henri M. J. Boffin
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 474 Issue: 4 Pages: 4322-4346

    • DOI

      10.1093/mnras/stx3049

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Spectroscopic and aster-seismic analysis of the remarkable main-sequence A star KIC 111451232017

    • Author(s)
      Masahide Takada-Hidai, Donald W. Kurtz, Hiromoto Shibahashi, Simon J. Murphy, Masao Takata, Hideyuki Saio, Takashi Sekii
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 470 Issue: 4 Pages: 4908-4924

    • DOI

      10.1093/mnras/stx1506

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Finding binaries from phase modulation of pulsating stars with Kepler2017

    • Author(s)
      Hiromoto Shibahashi, Simon Murphy, Tim Bedding
    • Journal Title

      EPJ Web of Conferences

      Volume: 152 Pages: 03003-03003

    • DOI

      10.1051/epjconf/201715203003

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Blazhko RR Lyrae variables and phase modulation in binary systems2017

    • Author(s)
      Hiromoto Shibahashi
    • Journal Title

      EPJ Web of Conferences

      Volume: 152 Pages: 03006-03006

    • DOI

      10.1051/epjconf/201715203006

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pulsational instability of high-luminosity H-rich pre-white dwarf star2017

    • Author(s)
      Leila M. Calcaferro, Alejandro H. Corsico, Maria E. Camisassa, Leandro G. Althaus, Hiromoto Shibahashi
    • Journal Title

      EPJ Web of Conferences

      Volume: 152 Pages: 06012-06012

    • DOI

      10.1051/epjconf/201715206012

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Finding binaries from phase modulation of pulsating stars with Kepler2017

    • Author(s)
      H. Shibahashi, S. Murphy, T. Bedding
    • Journal Title

      EPJ-Conference series

      Volume: -

    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Journal Article] The Blazhko RR Lyrae variables and phase modulation in binary systems2017

    • Author(s)
      H. Shibahashi
    • Journal Title

      EPJ-Conference series

      Volume: -

    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Journal Article] Pulsational instability of high-luminosity H-rich pre-white dwarf stars2017

    • Author(s)
      L. M. Calcaferro, A. H. Corsico, M. E. Camisassa, L. G. Althaus, H. Shibahashi
    • Journal Title

      EPJ-Conference series

      Volume: -

    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Journal Article] Finding binaries from phase modulation of pulsating stars with Kepler - IV. Detection limits and radial velocity verification2016

    • Author(s)
      S. J. Murphy, H. Shibahashi, T. R. Bedding
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 461 Issue: 4 Pages: 4215-4226

    • DOI

      10.1093/mnras/stw1622

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] A planet in an 840 day orbit around a Kepler main-sequence A star found from phase modulation of its pulsations2016

    • Author(s)
      S. J. Murphy, T. R. Bedding, H. Shibahashi
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 827 Issue: 1 Pages: L17-L17

    • DOI

      10.3847/2041-8205/827/1/l17

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Pulsations powered by hydrogen shell burning in white dwarfs2016

    • Author(s)
      M. E. Camisassa, A. H. Co;rsico, L. G. Althaus, H. Shibahashi
    • Journal Title

      Astronomy and Astrophysics

      Volume: 595 Pages: A45-A45

    • DOI

      10.1051/0004-6361/201628857

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Shape of a slowly rotating star measured by asteroseismology2016

    • Author(s)
      L. Gizon, T. Sekii, M. Takata, D. W. Kurtz, H. Shibahashi, M. Bazot, O. Benomar, A. Birch, K. R. Sreenivasan
    • Journal Title

      Science Advances

      Volume: 2

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Search for quiet stellar-mass black holes by asteroseismology from space2019

    • Author(s)
      Shibahashi, H.
    • Organizer
      Stars and their Variability - observed from Space
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Super-Nyquist Asteroseismology with Future Space Missions2018

    • Author(s)
      Shibahashi Hiromoto
    • Organizer
      PHOST "Physics of Oscillating Stars" conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Asteroseismology as a new window to statistics of binaries2018

    • Author(s)
      Shibahashi Hiromoto
    • Organizer
      Workshop to celebrate Arlette Grotsch 75th birthday and her career achievements
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Finding binaries from phase modulation of pulsating stars with Kepler2016

    • Author(s)
      H. Shibahashi, S. Murphy, T. Bedding
    • Organizer
      Wide-field variability surveys: a 21st-century perspective
    • Place of Presentation
      San Pedro de Atacama, Chile
    • Year and Date
      2016-11-28
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] The Blazhko RR Lyrae variables and phase modulation in binary systems2016

    • Author(s)
      H. Shibahashi
    • Organizer
      Wide-field variability surveys: a 21st-century perspective
    • Place of Presentation
      San Pedro de Atacama, Chile
    • Year and Date
      2016-11-28
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Pulsational instability of high-luminosity H-rich pre-white dwarf stars2016

    • Author(s)
      L. M. Calcaferro, A. H. Corsico, M. E. Camisassa, L. G. Althaus, H. Shibahashi
    • Organizer
      Wide-field variability surveys: a 21st-century perspective
    • Place of Presentation
      San Pedro de Atacama, Chile
    • Year and Date
      2016-11-28
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Finding binaries from phase modulation of pulsating stars with Kepler2016

    • Author(s)
      H. Shibahashi, S. Murphy, T. Bedding
    • Organizer
      Chile-Japan academic forum 2016 at Patagonia
    • Place of Presentation
      Punta Arenas and Puerto Natales, Chile
    • Year and Date
      2016-11-07
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] The Blazhko RR Lyrae variables and phase modulation in binary systems2016

    • Author(s)
      H. Shibahashi
    • Organizer
      Understanding the roles of rotation, pulsation and chemical peculiarities in the upper main sequence
    • Place of Presentation
      Lake District, UK
    • Year and Date
      2016-09-11
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2022-02-16  

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