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题名: Analysis of Q-type Near-Earth Asteroid Spectra with Modified Gaussian Model
作者: Wang Hao; Ma Yuehua; Zhao Haibin; Lu Xiaoping
刊名: Acta Astronomica Sinica
出版日期: 2016
卷号: 57, 期号:4, 页码:437-446
英文摘要: Using the Modified Gaussian Model (MGM) method developed by Sunshine et al. to extract mineralogical information from the spectra of eight Q-type near-earth asteroids, we obtain their surface composition of orthopyroxene and clinopy-roxene. We further get a compositional proportion of each asteroid: the abundance of clinopyroxene is about 70% on the suface of asteroids 5143, 7341, 66146, and 162058, and it is about 60% on the surface of asteroids 1862, 4688, and 5660, but only 43% on the surface of asteroid 3753. Then we analyse the reason of apparently low abundance of clinopyroxene on the surface of asteroid 3753. The level of metamorphism experienced by the asteroid increases with the decreasing of the distance from the center. So the asteroid 3753 is highly metamorphosed, and the abundance of clinopyroxene is low.
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16821
Appears in Collections:近地天体探测和太阳系天体研究团组_期刊论文

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