• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2012 Fiscal Year Final Research Report

Studies on properties of planet-host stars and on formation conditions of planets based on analyses of chemical compositions.

Research Project

  • PDF
Project/Area Number 22540255
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Astronomy
Research InstitutionTokai University

Principal Investigator

HIDAI Masahide  東海大学, 総合教育センター, 教授 (90173179)

Project Period (FY) 2010 – 2012
Keywords光学赤外線天文学
Research Abstract

Abundance analyses of 13 elements (C to Zn) were carried out for 73 planet-host starsand 18 comparison stars. Comparison of [Fe/H] with a total metallicity [M/H] which includes abundances of Fe and 13 elements yielded the result that [M/H] corresponds to about 0.75 of [Fe/H] value, and suggested that [M/H] should be used as a metallicity concerning a condition for planet formation in the metal-deficient region. One hot Jupiter was detected around one intermediate-mass giant by planet survey, and its mass was turned out to be a new lower limit of planets being formed around intermediate-mass stars. It is found that about 10 stars of the giant sample may have planet around them, and that Fe abundances distribute around the solar value, which is different from dwarfs case. As for the related studies, behaviors of sulfur and silicon of alpha elements and existence of chromosphere were investigated in the sample of metal-poor dwarfs and giants. Sulfur shows a flat trend with +0.4 dex against [Fe/H] in a lower metallicity region. Silicon shows a behavior similar to sulfur, but it is confirmed that NLTE analyses are necessary for abundance analyses based on near infrared absorption lines. As for chromosphere, it is confirmed observationally that chromosphere exists in dwarfs and giants commonly independent of metallicity.

  • Research Products

    (21 results)

All 2013 2012 2011 2010

All Journal Article (8 results) Presentation (13 results)

  • [Journal Article] Carbon Abundances of Metal-Poor Star Determined from the C I 1.068-1.069 micron Lines2013

    • Author(s)
      Takeda, Y. & Takada-Hidai,M.
    • Journal Title

      Pub. Astron.Soc.Japan

      Volume: 65(4)(in press)

  • [Journal Article] High-resolution Spectroscopy of Extremely Metal-poor Stars from SDSS/SEGUE. I. Atmospheric Parameters and Chemical Compositions2013

    • Author(s)
      Aoki, W., Beers, T. C., Lee, Y. S.,Honda, S., Ito, H., Takada-Hidai, M., et al.
    • Journal Title

      Astron. J.

      Volume: 145 Pages: 13

  • [Journal Article] A Planetary Companion to the Intermediate-Mass Giant HD 1006552012

    • Author(s)
      Omiya, M. …., Takada-Hidai, M
    • Journal Title

      Pub. Astron.Soc.Japan

      Volume: 64 Pages: 340

  • [Journal Article] SILICON ABUNDANCES IN NEARBY STARS FROM THE Si I INFRARED LINES2012

    • Author(s)
      Shi, J.R., Takada-Hidai, M. et al
    • Journal Title

      Astrophys. J

      Volume: 755 Pages: 36

  • [Journal Article] Behavior of [S/Fe] in Very Meta-Poor Stars from the SI 1.046 μm Lines Revisited2012

    • Author(s)
      Takeda, Y. & Takada-Hidai, M.
    • Journal Title

      Pub. Astron.Soc.Japan

      Volume: 64 Pages: 42

  • [Journal Article] Spectroscopic Studies of Extremely Metal-poor Stars with the Subaru High Dispersion Spectrograph. V. The Zn-enhanced Metal-poor Star BS 16920-017.2011

    • Author(s)
      Honda, S., Aoki, W., Beers, T. C., & Takada-Hidai, M.
    • Journal Title

      Astrophys. J.

      Volume: 730 Pages: 77

  • [Journal Article] Chromospheres in Metal-Poor Stars Evidenced from the He I 10830A Line.2011

    • Author(s)
      Takeda,Y, & Takada-Hidai,M
    • Journal Title

      Pub. Astron.Soc.Japan

      Volume: 63 Pages: S547~S554

  • [Journal Article] Exploring the [S/Fe] Behavior of Metal-Poor Stars with the S I 1.046 μm Lines2011

    • Author(s)
      Takeda,Y, & Takada-Hidai, M.
    • Journal Title

      Pub. Astron.Soc.Japan

      Volume: 63 Pages: S537~S546

  • [Presentation] 近赤外域CI 1.068-1.069 μm 線に基づく金属欠乏星の炭素組成決定2013

    • Author(s)
      竹田洋一、比田井昌英
    • Organizer
      日本天文学会2013年春季年会
    • Year and Date
      20130300
  • [Presentation] 地球型惑星検出のためのすばる赤外線ドップラー分光器IRDの開発: 42012

    • Author(s)
      小谷隆行、...、比田井昌英、他
    • Organizer
      日本天文学会2012年秋季年会
    • Year and Date
      20120900
  • [Presentation] ドップラー法による3-4 Mの中質量巨星における惑星探索2012

    • Author(s)
      大宮正士、比田井昌英、佐藤文衛、泉浦秀行
    • Organizer
      日本天文学会2012年秋季年会
    • Year and Date
      20120900
  • [Presentation] 金属欠乏星のHe I 10830 A 線に基づく彩層2012

    • Author(s)
      比田井昌英、竹田洋一
    • Organizer
      日本天文学会2012年秋季年会
    • Year and Date
      20120900
  • [Presentation] 地球型惑星検出のためのすばる赤外線ドップラー分光器IRDの開発:32012

    • Author(s)
      田村元秀、....、比田井昌英、他
    • Organizer
      日本天文学会2012年春季年会
    • Year and Date
      20120300
  • [Presentation] G 型巨星における惑星系の日韓共同探査.VIII:中質量巨星HD100655を周回する惑星の発見2012

    • Author(s)
      大宮正士、..... , 比田井昌英、他
    • Organizer
      日本天文学会2012年春季年会
    • Year and Date
      20120300
  • [Presentation] 中性珪素の近赤外吸収線に基づく近傍星のNLTE組成解析2012

    • Author(s)
      Shi, J.R., 比田井昌英、竹田洋一、他
    • Organizer
      日本天文学会2012年春季年会
    • Year and Date
      20120300
  • [Presentation] 地球型惑星検出のためのすばる赤外線ドップラー分光器IRDの開発:22011

    • Author(s)
      田 村 元 秀 、...、比田井昌英、他
    • Organizer
      日本天文学会2011年秋季年会
    • Year and Date
      20110900
  • [Presentation] IRDチームすばるIRDによるサイエンス:M型矮星の観測2011

    • Author(s)
      青木和光、西山正吾、森野潤一、大宮正士、比田井昌英、末永拓也
    • Organizer
      日本天文学会2011年秋季年会
    • Year and Date
      20110900
  • [Presentation] 中性珪素の近赤外吸収線に基づくハローと円盤星における珪素組成の振る舞い2011

    • Author(s)
      比田井昌英、竹田洋一
    • Organizer
      日本天文学会2011年秋季年会
    • Year and Date
      20110900
  • [Presentation] G型巨星における惑星系の日韓共同探査.VII2011

    • Author(s)
      大 宮 正 士 、....比田井昌英、他
    • Organizer
      日本天文学会2011年春季年会
    • Year and Date
      20110300
  • [Presentation] 中性硫黄の近赤外3重線に基づく金属欠乏星の硫黄組成の振る舞い2011

    • Author(s)
      比田井昌英、竹田洋一
    • Organizer
      日本天文学会2011年春季年会
    • Year and Date
      20110300
  • [Presentation] 金属欠乏星における銅の振る舞い2010

    • Author(s)
      比田井昌英、山本章裕
    • Organizer
      日本天文学会2010年秋季年会
    • Year and Date
      20100900

URL: 

Published: 2014-08-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi