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Link between protoplanetary materials and interstellar dust

Research Project

Project/Area Number 13440059
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

YAMAMOTO Tetsuo  Nagoya Univ., Dept.Earth & Planet, Professor, 大学院・環境学研究科, 教授 (10126196)

Co-Investigator(Kenkyū-buntansha) KOZAWA Takeshi  Hokkaido Univ., Dept.Earth & Planet, Professor, 大学院・理学圏研究科, 教授 (90263368)
WATANABE Sei'ichiro  Nagoya Univ., Dept.Earth & Planet, Professor, 大学院・環境学研究科, 助教授 (50230967)
HIRAYAMA Yasuhiro  Nagoya Univ., Dept.Earth & Planet, Professor, 大学院・環境学研究科, 助教授 (30252224)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥11,200,000 (Direct Cost: ¥11,200,000)
Fiscal Year 2003: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2002: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 2001: ¥6,100,000 (Direct Cost: ¥6,100,000)
KeywordsNucleation / cosmic dust / interstellar matter / meteorites / planets / protoplanetary materials / material evolution in space / ダスト / Presolar grains / TiC / グラファイト / 物質進化 / 粘弾性 / 赤外線分光 / 惑星原物質 / 星間ダスト / プレソーラー粒子 / ダスト生成
Research Abstract

The carrier of the 21-micron-band observed in the post-AGB stars is examined. We analyze the infrared spectra of the TiC clusters measured by von Helden et al. (2000, Science, 288, 313) and determine the absorption efficiency Q in the 21-micron-band. Using the Q, we estimate the Ti/Si abundance ratios needed to realize the flux ratios of the 21-and 11-micron emissions observed in the infrared spectra of the post-AGB stars exhibiting both 21-and 11-micron emissions. In view of the nature of the TiC condensation that TiC grains are quickly mantled by graphite, we calculate the emission spectra of the graphite-coated TiC grains and other possible types of core-mantle grains, and compare with the observed spectra. Both of the abundance and condensation considerations strongly suggest that TiC is an implausible carrier of the observed infrared 21-micron feature around carbon-rich post-AGB stars.
The following relevant study has also been carried out :
(1) Laboratory spectrosocpic study of molecular clusters,
(2) Review of the role of dust in formation of the planets

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] 山本哲生: "ダストの物質進化からみた惑星系形成"天文月報(日本天文学会誌). 96-4. 210-214 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Chigai: "Are TiC Grains a Carrier of the 21-micron Emission Band Observed around Post-Asymptotic Giant Branch Objects?"Astrophysical Journal. 578. 771-776 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Chigai: "Condensation sequence of SiC and graphite grains around carbon stars"Geochimica et Cosmochimica Acta. Special Supplement. A63 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Hirabayashi: "Step-scan Fourier-transform infrared absorption spectroscopy of cubic solid acetylene clusters"Journal of Physical Chemistry A. 107. 4829-4833 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Yamamoto: "Crystallization of cometary silicates"Proc. 36th ISAS Lunar and Planetary Symp.. 36. 200-201 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Y.Kimura: "Diffusion constant of hydrogen atoms in H2O+CO ice"Proc. 36th ISAS Lunar and Planetary Symp.. 36. 254-257 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Yamamoto: "A Mechanism of Crystallization of Cometary Silicates"Highlights in Astronomy. (In press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Y.Hirahara: "International Progress on Advanced Optics and Sensors"Universal Academy Press inc.. 31-41 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Yamamoto: "Role of dust in formation of the Planets"Astronomical Herald. Vol.96 No.4. 210-214 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Chigai: "Are TiC Grains a Carrier of the 21-micron Emission Band Observed around Post-Asymptotic Giant Branch Objects?"Astrophysical Journal. 578. 771-776 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Chigai: "Condensation sequence of SiC and graphite grains around carbon stars"Geochimica et Cosmochimica Acta Special Supplement. A63. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Hirabayashi: "Step-scan Fourier-transform infrared absorption spectroscopy of cubic solid acetylene clusters"Journal of Physical Chemistry A. 107. 4829-4833 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Yamamoto: "Crystallization of cometary silicates"Proc.36th ISAS Lunar and Planetary Symp.. 36. 200-201 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Y.Kimura: "Diffusion constant of hydrogen atoms in H2O + CO ice"Proc.36th ISAS Lunar and Planetary Symp.. 254-257 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Yamamoto: "A Mechanism of Crystallization of Cometary Silicates"Highlights in Astronomy. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 山本 哲生: "ダストの物質進化からみた惑星系形成"天文月報(日本天文学会誌). Vol.96 No.4. 210-214 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Chigai: "Are TiC Grains a Carrier of the 21-micron Emission Band observed around Post-Asymptotic Giant Branch Objects ?"Astrophysical Journal. 578. 771-776 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Chigai: "Condensation sequence of SiC and graphite grains around carbon stars"Geochimica et Cosmochimica Acta. Special Supplement. A63-A63 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] S.Hirabayashi: "Step-scan Fourier-transform infrared absorption spectroscopy of cubic solid acetylene clusters"Journal of Physical Chemistry A. Vol.107. 4829-4833 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Kimura: "Diffusion constant of hydrogen atoms in H2O + CO ice"Proc.36th ISAS Lunar and Planetary Symp.. 36. 254-257 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Yamamoto: "A Mechanism of Crystallization of Cometary Silicates"Highlights in Astronomy. (in press). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Hirahara: "International Progress on Advanced Optics and Sensors"Universal Academy Press inc.. 477 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Chigai: "Heterogeneous Condensation of Presolar TiC Core-Graphite Mantle Spherules"Meteoritics and Planetary Science. 37. 1937-1951 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 千貝 健: "Are TiC grains a carrier of the 21 mirometer emission band observed around post-asymptotic giant branch post-AGB objects?"Astrophysical Journal. 587(in press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 山本 哲生: "ダストの物質進化からみた惑星形成"天文月報. 96・4(in Press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Minato: "Viscoelastic Properties of a Dust Chain"ESA SP. 50(in press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Yamamoto: "Energy Dissipation in a Viscoelastic Body under Time-dependent Stress"Advances in Space Reseach. (in press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Arakawa: "Rheological model on the sticking and rebound of cosmic dust covered with an organic layer"Proc. 35th ISAS Lunar and Planetary Symp.. 35. 187-190 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Yamamoto, T.: "Proceedings of Chem 02"Faculty of Science, University of Cairo. 616 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Yamamoto, T: "Kinetic theory of steady chemical nucleation in the gas phase"Astronomy and Astrophysics. 380. 373-383 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 千貝 健: "プレソーラーコア/マントル粒子の生成条件"遊・星・人(日本惑星科学会誌). 10. 178-183 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Chigai, T: "On the carrier of the infrared 20.1-& muim feature around post-AGB stars"Proceedings of the 34th ISAS Lunar and Planetary Symposium. 34. 167-169 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Aoki, K: "Simultaneous Formation of Presolar SiC and Graphite Grains"Proceedings of the 34th ISAS Lunar and Planetary Symposium. 34. 164-166 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Yamamoto, T: "Kinetic theory of steady chemical nucleation in the gas phase"Proce kinetic theory of steady chemical nucleation in the gas phase. 34. 163-163 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Yamamoto, T: "Theory of Collisional Sticking of Dust Grains"Proceedings of the 34th ISAS Lunar and Planetary Symposium. 34. 158-158 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 平原靖大: "惑星系の誕生の化学"化学と教育. 50・1. 23-27 (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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