Studies on infrared spectral reflectances of minerals and meteorites.

矿物和陨石红外光谱反射率的研究。

• 批准号: 60460056
• 负责人: MIYAMOTO Masamichi
• 金额: $ 4.93万
• 依托单位: College of Arts and Sciences, University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-60460056/
• 关键词: Remote sensing; Infrared spectra; Reflectance spectra; Asteroids; Meteorites; Rock-forming minerals; Planetary surface materials; 惑星科学

1. We measured diffuse infrared reflectances (2.53-25 <maicro> m) of minerals and meteorites by using a Fourier transform infrared spectrophotometer (JASCO FT/IR-3) to better understand the surface mineral assemblage of asteroids.2. We developed some programs to process infrared spectral data including a program to draw spectral curves.3. C2 carbonaceous chondrite materials can be distinguished from C3 carbonaceous chondrite materials by the depth of the hydration bands around 3 and 6 <maicro> m. This enable us to better understand the mineral assemblage of C-type asteroids.4. Enstatite chondrite materials show many absorption bands at the wavelength longer than about 9 <maicro> m whereas iron meteorite materials do not show any absorption bands up to 25 <maicro> m. This result gives us information on the surface composition of M-type asteroids.5. Fine-grained materials determine the spectral features seen in diffuse reflectances.6. We speculate that the surface composition of asteroid 16 Psyche is the enstatite chondrite-like assemblage, not the iron meteorite-like assemblage on the basis of spectral features around 10 <maicro> m.7. We need infrared measurements of high enough quality of asteroids.

1. 利用傅立叶变换红外分光光度计（JASCO FT/IR-3）测量了矿物和陨石的漫反射红外反射率（2.53-25 <微米> m），以更好地了解小行星表面矿物组合。我们开发了一些处理红外光谱数据的程序，包括绘制光谱曲线的程序。C2碳质球粒陨石材料与C3碳质球粒陨石材料的水化带深度在3和6 < 10 μ m左右，这使我们能够更好地了解c型小行星的矿物组合。长辉石球粒陨石材料在波长大于约9 < mamicro - > m处显示出许多吸收带，而铁陨石材料在波长大于25 < mamicro - > m处没有任何吸收带。这一结果为我们提供了m型小行星表面组成的信息。细粒度的材料决定了漫反射的光谱特征。基于10 <maicro> m.7附近的光谱特征，我们推测16 Psyche小行星的表面成分是似长辉石球粒陨石组合，而不是似铁陨石组合。我们需要对小行星进行足够高质量的红外测量。

项目成果

M. Miyamoto: "Diffuse reflectances 0.25 to 25 <maicro> m of an enstatite chondrite and implications for surface minerals of M-type asteroids." Lunar and Planetary Science XVIII. (1987)

M. Miyamoto：“顽火辉石球粒陨石的漫反射率 0.25 至 25 <maicro> m 及其对 M 型小行星表面矿物的影响。”

M. Miyamoto: "Diffuse reflectance from 0.25 to 25 <maicro> m of the Yamato-691 enstatite chondrite." Mem. Natl. Inst. Polar Res., Spec. Issue. (1987)

M. Miyamoto：“Yamato-691 顽火辉石球粒陨石的 0.25 至 25 <maicro> 米的漫反射率。”

M.Miyamoto: Proc.19th ISAS Lunar and Planetary Symposium. 116-119 (1986)

M.Miyamoto：Proc.19th ISAS 月球和行星研讨会。

M. Miyamoto: "Infrared diffuse reflectances (2.5-25 micrometers) of meteorites and application to identification of asteroidal surface materials." Proc. 19th ISAS Lunar and Planetary Symposium. 116-119 (1986)

M. Miyamoto：“陨石的红外漫反射率（2.5-25 微米）及其在识别小行星表面材料中的应用。”

M.Miyamoto: Lunar and Planetary Science XVIII. (1987)

M.Miyamoto：月球与行星科学 XVIII。