论文标题
通过Atlas双波段光度法研究小行星家族中的分类多样性
Investigating Taxonomic Diversity within Asteroid Families through ATLAS Dual-Band Photometry
论文作者
论文摘要
我们在这里向小行星地面陆地局部碰撞的最后一个警报系统（ATLAS）的历史数据集（2015- 2018年）（ATLAS）的历史数据集（2015-2018）中介绍了CO-O颜色。众所周知，Themis和Koronis家族分别是相对纯净的C-和S型Bus-demeo分类学家族，并且从Atlas Broadband C-和O-Forters中提取的颜色数据中的这两个家族的提取的颜色数据使用来证明Atlas C-O颜色是足够的参数，可以区分C-和S-type分类法。众所周知，Vesta和Nysa-Polana家族表现出可能是由于Vesta差异化的母体起源和Nysa-Polana的混合物，实际上是由两个具有不同分类法的嵌套家庭组成的。我们的数据表明，Flora家族还显示了大量的分类混合，并且数据显示了对颜色的大量H型依赖性。我们提出并排除了观察到的分类组合的几种解释。此外，我们提取此处报告的所有目标的旋转周期，并与先前报告的期间的目标找到良好的一致性。
We present here the c-o colors for identified Flora, Vesta, Nysa-Polana, Themis, and Koronis family members within the historic data set (2015-2018) of the Asteroid Terrestrial-impact Last Alert System (ATLAS). The Themis and Koronis families are known to be relatively pure C- and S-type Bus-DeMeo taxonomic families, respectively, and the extracted color data from the ATLAS broadband c- and o-filters of these two families is used to demonstrate that the ATLAS c-o color is a sufficient parameter to distinguish between the C- and S-type taxonomies. The Vesta and Nysa-Polana families are known to display a mixture of taxonomies possibly due to Vesta's differentiated parent body origin and Nysa-Polana actually consisting of two nested families with differing taxonomies. Our data show that the Flora family also displays a large degree of taxonomic mixing and the data reveal a substantial H-magnitude dependence on color. We propose and exclude several interpretations for the observed taxonomic mix. Additionally, we extract rotation periods of all of the targets reported here and find good agreement with targets that have previously reported periods.
