The size distribution of Jupiter Family comet nuclei
The size distribution of Jupiter Family comet nuclei
复制标题
木星家族彗星核的大小分布
DOI：
10.1111/j.1365-2966.2011.18406.x
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发表时间：
2003
影响因子：
4.8
通讯作者：
P. Weissman
中科院分区：
文献类型：
--
作者：
C. Snodgrass;A. Fitzsimmons;S. Lowry;P. Weissman
我们提出了一个更新的累积尺寸分布（CSD）的木星家族彗星（JFC）的核，包括一个严格的评估的不确定性的斜率的CSD。CSD表示为幂律，N（>rN）<$r−qN，其中rN是原子核的半径，q是斜率。我们包括大量的光学观测发表的我们和其他人，因为在彗星II书的全面审查，并利用改进的拟合方法。我们评估CSD的不确定性，由于所有的未知数和不确定性（光度的不确定性，假设的相函数，核的形状）通过Monte Carlo模拟。为了做到这一点，我们还简要回顾了JFC的这些参数的当前测量。对于半径rN≥ 1.25 km的核，最终的CSD斜率q= 1.92 ± 0.20。
We present an updated cumulative size distribution (CSD) for Jupiter Family comet (JFC) nuclei, including a rigorous assessment of the uncertainty on the slope of the CSD. The CSD is expressed as a power law, N(>rN) ∝r−qN, where rN is the radius of the nuclei and q is the slope. We include a large number of optical observations published by us and others since the comprehensive review in the Comets II book, and make use of an improved fitting method. We assess the uncertainty on the CSD due to all of the unknowns and uncertainties involved (photometric uncertainty, assumed phase function, albedo and shape of the nucleus) by means of Monte Carlo simulations. In order to do this we also briefly review the current measurements of these parameters for JFCs. Our final CSD has a slope q= 1.92 ± 0.20 for nuclei with radius rN≥ 1.25 km.