论文标题
来自陆地行星饲养区的不同区域的行星碰撞的概率与形成行星和月亮
Probabilities of collisions of planetesimals from different regions of the feeding zone of the terrestrial planets with the forming planets and the Moon
论文作者
论文摘要
模拟了行星的行星迁移从陆地行星的进食区迁移，该行星根据到太阳的距离分为七个区域。考虑了所有行星的重力的影响。在某些情况下，考虑了陆地行星而不是行星本身的胚胎；假定它们的质量为行星当前质量的0.1或0.3。迁移的行星轨道元素的阵列用于计算其与行星，月球或胚胎碰撞的概率。根据我们的计算，我们得出了陆地行星积累过程的结论。地球行星的胚胎，其质量不超过当前行星质量的十分之一，主要来自其轨道附近的行星。当行星从木星和土星的进食区域落入陆地行星的胚胎上时，这些胚胎尚未获得当前行星的质量，并且该区域的材料（包括水和挥发物）可以积聚在陆地行星的内层。每个陆地行星的内层主要由位于某个行星轨道附近的材料形成。地球和金星的外层可以从陆地行星的进食区的不同部分积聚这两个行星的相同材料。地球和金星可以在5 Myr中获得超过一半的群众。由于稀有的凝结的收缩，火星的胚胎的形成（其质量比火星少的质量比火星少的质量小几倍）可以解释大部分火星肿块的相对较快的生长。
Migration of planetesimals from the feeding zone of the terrestrial planets, which was divided into seven regions depending on the distance to the Sun, was simulated. The influence of gravity of all planets was taken into account. In some cases, the embryos of the terrestrial planets rather than the planets themselves were considered; their masses were assumed to be 0.1 or 0.3 of the current masses of the planets. The arrays of orbital elements of migrated planetesimals were used to calculate the probabilities of their collisions with the planets, the Moon, or their embryos. Based on our calculations, we drew conclusions on the process of accumulation of the terrestrial planets. The embryos of the terrestrial planets, the masses of which did not exceed a tenth of the current planetary masses, accumulated planetesimals mainly from the vicinity of their orbits. When planetesimals fell onto the embryos of the terrestrial planets from the feeding zone of Jupiter and Saturn, these embryos had not yet acquired the current masses of the planets, and the material of this zone (including water and volatiles) could be accumulated in the inner layers of the terrestrial planets. The inner layers of each of the terrestrial planets were mainly formed from the material located in the vicinity of the orbit of a certain planet. The outer layers of the Earth and Venus could accumulate the same material for these two planets from different parts of the feeding zone of the terrestrial planets. The Earth and Venus could acquire more than half of their masses in 5 Myr. A relatively rapid growth of the bulk of the Martian mass can be explained by the formation of Mars' embryo (the mass of which is several times less than that of Mars) due to contraction of a rarefied condensation.
