论文标题
基于苔丝S1-S13观测值的小行星家族中的旋转期和形状的非球面性
Rotation periods and shape asphericity in asteroid families based on TESS S1-S13 observations
论文作者
论文摘要
在这里，我们介绍了基于16个主要皮带家族中2859个家族小行星的旋转周期和光曲线幅度的分析，该家族基于TSSYS-DR1小行星轻曲线数据库中的9912苔丝小行星光曲线。我们发现，光曲线特性的分布遵循一些小行星家庭的家庭特定特征，包括匈牙利，玛丽亚，朱诺，EOS，Eucharis和Alauda家庭。在其他大家庭中，这些分布通常彼此非常相似。我们确认，年龄较大的家庭倾向于包含更大的球体，低振幅小行星。我们发现，在植物群和玛丽亚家族的核心和郊区，轮换期分布不同，而Vesta，EOS和EONomia家族缺乏此功能。我们还确认，非常快速的旋转小行星接近球形（或旋转的顶部形状），而在4--8小时的范围内，旋转较慢的小行星比11小时慢的小行星比小行星更为球形，并且预计该组将包含最长的身体。
Here we present the analysis of the distribution of rotation periods and light curve amplitudes based on 2859 family asteroids in 16 Main Belt families based on 9912 TESS asteroid light curves in the TSSYS-DR1 asteroid light curve database. We found that the distribution of the light curve properties follow a family-specific character in some asteroid families, including the Hungaria, Maria, Juno, Eos, Eucharis, and Alauda families. While in other large families, these distributions are in general very similar to each other. We confirm that older families tend to contain a larger fraction of more spheroidal, low-amplitude asteroids. We found that rotation period distributions are different in the cores and outskirts of the Flora and Maria families, while the Vesta, Eos, and Eunomia families lack this feature. We also confirm that very fast spinning asteroids are close to spherical (or spinning top shapes), and minor planets rotating slower than ~11 hour are also more spherical than asteroids in the 4--8 hour period range and this group is expected to contain the most elongated bodies.
