论文标题
Haumea及其家人通过二进制合并的形成
The formation of Haumea and its family via binary merging
论文作者
论文摘要
小行星带中的数十个小行星家族具有相似的轨道和成分，因为它们是通过碰撞形成的。然而，海王星轨道以外的冰冷碎片称为库珀带，只有一个已知的家庭，即豪伊亚家族。到目前为止，没有对Haumea家族的形成的自持式解释可以与家族的所有地球物理和轨道特征相匹配，而不会引起极为不可能的事件。在这里，我们表明该家庭被充分解释为Neptune轨道迁移末端附近的合并二元的产物。在迁移的最后阶段，有效地消除了合并二进制的独特轨道签名，该二进制局部在大量搜索中没有发现，从而为Haumea家族的各个方面提供了解释。通过将Haumea家族的形成放置在太阳系形成的更广泛背景下，我们展示了用于形成Haumea的概念验证模型。
Dozens of families of asteroids in the asteroid belt have similar orbits and compositions because they formed through a collision. However, the icy debris beyond the orbit of Neptune, called the Kuiper Belt, contains only one known family, the Haumea family. So far, no self-consistent explanation for the formation of the Haumea family can match all geophysical and orbital characteristics of the family without invoking extremely improbable events. Here, we show that the family is adequately explained as the product of a merging binary near the end of Neptune's orbital migration. The unique orbital signature of a merging binary, which was not found in extensive searches, is effectively erased during the final stages of migration, providing an explanation for all aspects of the Haumea family. By placing the formation of the Haumea family in the broader context of solar system formation, we demonstrate a proof-of-concept model for the formation of Haumea.
