The forming environment of the solar system constrained by short-lived radionuclides

• TACHIBANA Shogo

  Department of Earth and Planetary Science, University of Tokyo

Bibliographic Information

Other Title

• 消滅核種存在度から考える太陽系誕生環境
• 2006年度日本地球化学会奨励賞受賞記念論文(The Geochemical Society of Japan Award for Young Researcher) 消滅核種存在度から考える太陽系誕生環境
• 2006ネンド ニホン チキュウ カガクカイ ショウレイショウ ジュショウ キネン ロンブン The Geochemical Society of Japan Award for Young Researcher ショウメツ カクシュ ソンザイド カラ カンガエル タイヨウケイ タンジョウ カンキョウ

Abstract

The presence of several short-lived, now extinct, radionuclides in the early solar system has been confirmed through measurements of excesses of daughter isotopes that correlate with the abundances of their parent elements in cogenetic minerals in meteorites. Some of such short-lived radionuclides should have formed just prior to or soon after the solar system formation either by stellar nucleosynthesis or by energetic-particle irradiation. A short-lived rdionuclide ⁶⁰Fe ins produced only in stars and thus provides a constraint on the stellar contribution to solar system radionuclides. Clear evidence of the presence of ⁶⁰Fe in the early solar system has been found in various components in meteorites. The estimated initial abundance of ⁶⁰Fe in the solar system cannot be explained byheritage from the interstellar medium, but requires the injection of ⁶⁰Fe into the proto solar materials from a nearby star. Although no previous model succeeded to explain the abundances of the short-lived radionuclides (²⁶Al, ⁴¹Ca, ⁵³Mn, and ⁶⁰Fe) by injection from asingle stellar source, I propose here that a faint super nova with mixing and fallback can match the solar-system abundances of ²⁶Al, ⁴¹Ca, ⁵³Mn, and ⁶⁰Fe suggesting that the solar system formed nearby a massive star.

Journal

• Chikyukagaku

  Chikyukagaku 43 (4), 213-226, 2009

  The Geochemical Society of Japan

Keywords

• Solar system
• meteorite
• short-lived radionuclide
• supernova
• stellar nucleosynthesis

Details

• CRID: 1390282680719305216
• NII Article ID: 110009442263
• NII Book ID: AN00141280
• DOI: 10.14934/chikyukagaku.43.213
• ISSN: 21885923
• ISSN: 03864073
• NDL BIB ID: 10559454
• Web Site: http://id.ndl.go.jp/bib/10559454
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10559454
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed