论文标题
在扩展的太阳能磁盘中的两个原始行星储层的自然分离
Natural separation of two primordial planetary reservoirs in an expanding solar protoplanetary disk
论文作者
论文摘要
陨石在非碳质（NC）和碳质（CC）基团之间显示同位素组成二分法，表明在两个不同的储层中发生了太阳能原势盘中的行星形成。普遍的观点是，迅速形成的木星是这些储层之间的障碍。我们在此模型中表现出基本的矛盾：如果木星是卵石漂移的有效阻断剂，那么内部NC储层会在数十万年内被径向漂移所耗尽。如果木星让材料通过，则将两个储层混合。取而代之的是，我们证明了CC鹅卵石在内部磁盘中的到来延迟了数百万年，该磁盘的粘性膨胀。我们的结果支持在外盘（> 10 au）中形成的木星，并允许大量的CC材料通过它并被陆地行星吸收。
Meteorites display an isotopic composition dichotomy between non-carbonaceous (NC) and carbonaceous (CC) groups, indicating that planetesimal formation in the solar protoplanetary disk occurred in two distinct reservoirs. The prevailing view is that a rapidly formed Jupiter acted as a barrier between these reservoirs. We show a fundamental inconsistency in this model: if Jupiter is an efficient blocker of drifting pebbles, then the interior NC reservoir is depleted by radial drift within a few hundred thousand years. If Jupiter lets material pass it, then the two reservoirs will be mixed. Instead, we demonstrate that the arrival of the CC pebbles in the inner disk is delayed for several million years by the viscous expansion of the protoplanetary disk. Our results support that Jupiter formed in the outer disk (>10 AU) and allowed a considerable amount of CC material to pass it and become accreted by the terrestrial planets.
