Possible thermal metamorphism on the C, G, B, and F asteroids detected from their reflectance spectra in comparison with carbonaceous chondrites
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概要
- 論文の詳細を見る
Reflectance spectra (0.3-2.6μm) of the C, G, B, and F asteroids and carbonaceous chondrites are compared in detail. Mixing calculations of 13 carbonaceous chondrite powders including three unusual CI/CM meteorites are done to characterize reflectance spectra of the 23 C, G, B, and F asteroids. Similar calculations are done with Murchison (CM2) samples heated at 400-1000℃. Both of two sets of calculations show that the C, G, B, and F asteroids may contain a significant amount of thermally metamorphosed materials. Comparison of ultraviolet absorption strengths between 160 C, G, B, and F asteroids and 21 carbonaceous chondrite powders suggests that surface minerals of most of those asteroids are thermally metamorphosed at temperatures around 600-1000℃.
- 国立極地研究所の論文
著者
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Hiroi Takahiro
Sn3 Nasa Johnson Space Center
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Hiroi Takahiro
SN3, NASA Johnson Space Center
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Pieters Carle
Department of Geological Sciences, Brown University
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Zolensky Michael
SN2, NASA Johnson Space Center
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Lipschutz Michael
Departmet of Chemistry, Purdue University
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Pieters Carle
Department Of Geological Sciences Brown University
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Pieters Carle
Departmet Of Geological Sciences Brown University
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Zolensky M
Nasa Johnson Space Center Texas Usa
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Lipschutz Michael
Department Of Chemistry Brwn-wthr Chemistry Bldg. Purdue University
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Lipschutz Michael
Departmet Of Chemistry Purdue University
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