论文标题
木星和土星的平均运动共振捕获和迁移在气态原球盘中
Capture and migration of Jupiter and Saturn in mean motion resonance in a gaseous protoplanetary disc
论文作者
论文摘要
我们通过使用FARGO2D1D代码的流体动力学模拟研究了木星和土星的动力学演化。我们研究了行星轨道Delta A_SJ的不同初始分离的演变，以研究它们是否以平均运动共振（MMR）和随后的行星迁移方向捕获（内或向外）。我们还对土星生长的不同时期的地球轨道动力学进行了评估。我们发现最初紧凑的轨道配置的演变取决于Delta A_SJ的值。这意味着大钉模型中提出的进化取决于木星和土星的精确初始轨道以及其形成的时间表。在1：2 MMR中捕获，并在内部或（几乎）停滞的迁移中受到高度青睐。在其范围内，我们的工作表明，与木星和土星的共振捕获相关的反向迁移可能是一种概率的概率进化情况，因此其他具有巨型行星的行星系统不会预计不会经历类似大钉的进化路径。
We study the dynamical evolution of Jupiter and Saturn embedded in a gaseous, solar-nebula-type disc by means of hydrodynamics simulations with the FARGO2D1D code. We study the evolution for different initial separations of the planets' orbits, Delta a_SJ , to investigate whether they become captured in mean motion resonance (MMR) and the direction of the subsequent migration of the planet (inward or outward). We also provide an assessment of the planet's orbital dynamics at different epochs of Saturn's growth. We find that the evolution of initially compact orbital configurations is dependent on the value of Delta a_SJ . This implies that an evolution as that proposed in the Grand Tack model depends on the precise initial orbits of Jupiter and Saturn and on the timescales for their formation. Capture in the 1:2 MMR and inward or (nearly) stalled migration are highly favoured. Within its limits, our work suggests that the reversed migration, associated with the resonance capture of Jupiter and Saturn, may be a low probability evolutionary scenario, so that other planetary systems with giant planets are not expected to have experienced a Grand Tack-like evolutionary path.
