通过多面体磨损形成小行星的锐边和平面区
Formation of sharp edges and planar areas of asteroids by polyhedral abrasion
摘要：
虽然已知形状的小行星数量在过去几年中急剧增加，但对形状的时间演变和潜在的物理过程知之甚少。在这里，我们提出了一个平均磨损模型的基础上，微碰撞，占小行星不一定朝着规则的球状体发展，而是（取决于回退率的喷出物）以下的替代路径，从而确认光度衍生功能，例如存在的大，相对平坦的区域分离的边缘。我们表明，我们的模型是现实的，因为大部分的碰撞属于这一类。
英文摘要：
While the number of asteroids with known shapes has drastically increased over the past few years, little is known on the the time-evolution of shapes and the underlying physical processes. Here we propose an averaged abrasion model based on micro-collisons, accounting for asteroids not necessarily evolving toward regular spheroids, rather (depending on the fall-back rate of ejecta) following an alternative path, thus confirming photometry-derived features, e.g. existence of large, relatively flat areas separated by edges. We show that our model is realistic, since the bulk of the collisions falls into this category.
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