Experiments and scaling laws for catastrophic collisions. [of asteroids]
Experiments and scaling laws for catastrophic collisions. [of asteroids]
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灾难性碰撞的实验和缩放定律。
DOI：
10.1093/pasj/56.6.1105
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发表时间：
1989
影响因子：
2.3
通讯作者：
M. Martino
中科院分区：
文献类型：
--
作者：
A. Fujiwara;P. Cerroni;D. Davis;E. Ryan;M. Martino
小行星（832）卡琳是卡琳家族中最大的成员，被认为是由580万年前的灾难性碰撞形成的。我们从2003年7月到9月对卡琳进行了测光观测，我们在这里报告了它的光变曲线和几个可见波段的颜色。卡琳的自转会合周期为。它的绝对星等（）和太阳位相曲线的斜率参数（）分别为.根据我们的颜色观测，我们确认卡琳是一颗S型小行星。此外，我们发现，有可能是一个颜色的变化在卡琳表面。我们推断，颜色的变化是由于新鲜的表面之间的差异，挖掘的家庭形成中断，和风化的表面，暴露于空间辐射和粒子轰击了很长一段时间。
The asteroid (832) Karin is the largest member of the Karin family, which is thought to have been formed by a catastrophic collision 5.8 Myr ago. We performed photometric observations of Karin from 2003 July to September, and we report here on its lightcurve and colors in several visible bands. The rotational synodic period of Karin was determined to be. Its absolute magnitude () and the slope parameter () of the solar phase curve wereand, respectively. Based on our color observations, we confirmed that Karin is an S-type asteroid. In addition, we found that there is likely to be a color variation over the surface of Karin. We infer that the color variation is due to the difference between the fresh surface, excavated by the family-forming disruption, and the weathered surface, exposed to space radiation and particle bombardment over a long period.