An attempt to reduce the effects of black material from the spectral reflectance of meteorites or asteroids
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概要
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An attempt to reduce the effects of black materials from the spectral reflectances of meteorites or asteroids was made by using the Kubelka-Munk function with minor modifications. Our reduction method has for its object to make clear the spectral contrast which is suppressed by the effects of the black materials. For this purpose, spectral reflectances (0.25-2.5μm) were measured on samples of the Yamato-75258 meteorite (LL6 chondrite) which contain various amounts of black materials (carbon black or magnetite), and their changes with the effects of black materials were examined. Only a few weight percents of the black materials lower the reflectivity and weaken the absorption band strength. On the basis of these reflectance measurements, we tried to construct the spectral reflectance curve by reducing the effects of the black material from that of the Murchison meteorite and to compare the constructed curve with the spectral reflectance of Ceres. The results imply that the material which contains less carbon than the Murchison meteorite, is a better candidate for the surface material of Ceres. Our method will be a useful one for making the spectral contrast clear, although some problems remain to be solved.
- 国立極地研究所の論文
著者
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Takano Yukio
Department of Physiology and Pharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University
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Miyamoto Masamichi
Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo
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Takano Yukio
Department Of Pure And Applied Sciences College Of General Education University Of Tokyo
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Mito Akihiro
Department of Pure and Applied Sciences, College of General Education, University of Tokyo
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Takano Yukio
Department Of Applied Physics Faculty Of Engineering University Of Tokyo
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Mito Akihiro
Department Of Pure And Applied Sciences College Of General Education University Of Tokyo
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Miyamoto Masamichi
Department Of Pure And Applied Sciences College Of General Education University Of Tokyo
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Miyamoto Masamichi
Department Of Earth And Planetary Science Graduate School Of Science University Of Tokyo
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