论文标题
构成和大小依赖性排序在预恒大生长中：播种类似汞的行星的形成
Composition and Size Dependent Sorting in Preplanetary Growth: Seeding the Formation of Mercury-like Planets
论文作者
论文摘要
在较早的工作中，我们发现尘埃骨料中的大金属铁馏分和强磁场可增强前铅的生长。这为在原星磁盘内部的内部形成了汞状行星的初始偏见。我们通过在富含铁的聚集体中添加纯石英骨料来扩展这些实验。磁增强仍导致形成较大的聚集体簇。这些簇现在包括硅酸盐聚集体，这也可以连接链之间的桥梁。但是，至少需要一定一定的富铁骨料来触发磁性增强。没有磁场，聚集体及其成分的粘性特性决定了给定尺寸的簇的组成。这引入了通过弹跳屏障的聚类形成的新分馏和分类机制。
In an earlier work, we found that large metallic iron fractions in dust aggregates and strong magnetic fields boost preplanetary growth. This sets an initial bias for the formation of Mercury-like planets in the inner part of protoplanetary disks. We extended these experiments here by adding pure quartz aggregates to the iron-rich aggregates. Magnetic boost still leads to the formation of larger clusters of aggregates. These clusters now include silicate aggregates, which can also be connecting bridges between chains. However, at least a certain fraction of iron-rich aggregates are needed to trigger magnetic boost. Without a magnetic field, the sticking properties of the aggregates and their constituents determine the composition of clusters of a given size. This introduces a new fractionation and sorting mechanism by cluster formation at the bouncing barrier.
