Surface Properties of Kuiper Belt Objects and Centaurs from Photometry and Polarimetry
Surface Properties of Kuiper Belt Objects and Centaurs from Photometry and Polarimetry
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柯伊伯带天体和半人马座天体的光度测定和偏振测定的表面特性
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
K. Muinonen
中科院分区：
文献类型：
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作者：
I. Belskaya;A. Levasseur;Y. Shkuratov;K. Muinonen
柯伊伯带天体（KBO）的物理性质可以通过研究其接近对立的光度和偏振相位效应（即亮度对立效应和负偏振分支）来评估。对柯伊伯带天体和半人马座行星的第一个相位曲线观测结果及其有希望的初步解释进行了回顾。尽管从地面观测中获得的相位角范围有限，但在亮度和偏振方面都发现了明显的特征。回顾了相位角效应相关数值和实验室模拟的最新结果。讨论了基于光度和偏振观测来约束表面几何反照率的可能性。
Physical properties of Kuiper belt objects (KBOs) can be assessed by studying their photometric and polarimetric phase effects close to opposition, i.e., the brightness opposition effect and the negative polarization branch. The first phase-curve observations and their promising preliminary interpretations are reviewed for KBOs and Centaurs. Despite the limited range of phase angles accessible from groundbased observations, distinct features have been discovered both in brightness and polarization. Recent results of relevant numerical and laboratory simulations of phase-angle effects are reviewed. The possibility of constraining the geometric albedos of the surfaces based on photometric and polarimetric observations is discussed.