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题名: Scattering Law Analysis Based on Hapke and Lommel-Seeliger Models for Asteroidal Taxonomy
作者: Huang, Xiang-Jie; Lu, Xiao-Ping; Li, Jian-Yang; Mei, Bao; Hsia, Chih-Hao; Zhao, Hai-Bin
刊名: RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期: 2017
卷号: 17, 期号:10, 页码:106
DOI: 10.1088/1674-4527/17/10/106
英文摘要: In deriving the physical properties of asteroids from their photometric data, the scattering law plays an important role, although the shape variations of asteroids result in the main variations in lightcurves. By following the physical behaviors of light reflections, Hapke et al. deduced complex functions to represent the scattering process, however, it is very hard to accurately simulate the surface scattering law in reality. For simplicity, other numerical scattering models are presented for efficiently calculating the physical properties of asteroids, such as the Lommel-Seeliger (LS) model. In this article, these two models are compared numerically. It is found that in some numerical applications the LS model in simple form with four parameters can be exploited to replace the Hapke model in complex form with five parameters. Furthermore, the generated synthetic lightcurves by the Cellinoid shape model also show that the LS model can perform as well as the Hapke model in the inversion process. Finally, by applying the Principal Component Analysis (PCA) technique to the parameters of the LS model, we present an efficient method to classify C and S type asteroids, instead of the conventional method using the parameters of the Hapke model.
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/17908
Appears in Collections:期刊(老文献)_期刊论文

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