Thermal modeling for a parent body of Itokawa

S. Wakita, T. Nakamura, T. Ikeda, H. Yurimoto

研究成果: Article査読

16 被引用数 (Scopus)

抄録

We modeled the possible parent bodies of Itokawa, which was heated within by the decay energy of 26Al. Based on mineralogic studies of dust particles derived from Itokawa by the Hayabusa spacecraft, it appeared that they were thermally metamorphosed at a peak temperature of 800 °C, and kept at 700 °C or higher at 7.6 Myr after CAI formation. Our numerical results show that the parent bodies of Itokawa would have been larger than 20 km in radius and accreted at a period between 1.9 and 2.2 Myr after CAI formation, to satisfy mineralogic and isotopic evidence from dust particles.

本文言語English
ページ(範囲)228-236
ページ数9
ジャーナルMeteoritics and Planetary Science
49
2
DOI
出版ステータスPublished - 2014 2月

ASJC Scopus subject areas

  • 地球物理学
  • 宇宙惑星科学

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