On the formation and processing of carbon and nitrogen compounds in carbonaceous chondrites
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概要
- 論文の詳細を見る
On the basis of chemical kinetic consideration, we examine processing of carbon and nitrogen compounds that leads to the linear relation between the logarithmic contents of C and N in carbonaceous chondrites : log N=a log C-b, found by A. SHIMOYAMA et al. (Chem. Lett., 10,2013,1987), where a>1 and b are constants. It is shown that the linear relation results from dissociation of organic polymer in the grains before accretion to parent body-sized objects by radiation that penetrates through the grains such as cosmic ray. Condensation of volatile molecules composed of C and N is also examined as a possible process to form precursors of organic compounds in carbonaceous chondrites. From an analysis of a model thermodynamic system, it is conjectured that this process can also realize the linear relation under certain conditions.
- 国立極地研究所の論文
著者
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Kozasa Takashi
Department Of Physics Faculty Of Science Kyoto University
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Yamamoto Tetsuo
Institute of Space and Astronautical Science
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Yamamoto Tetsuo
Institute Of Low Temperature Science Hokkaido University
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Yamamoto Tetsuo
Institute Of Astronomy The University Of Tokyo National Astronomical Observatory
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