标题： 多行星系统的轨道稳定性：高质量下的行为 显示英文标题

标题： Orbital Stability of Multi-Planet Systems: Behavior at High Masses

摘要： 在未来几年，高对比度成像调查有望揭示宽轨道、大质量系外行星种群的特征。截至目前，已知的宽轨道行星质量伴星数量很少，但只有一个这样的多行星系统已被发现：HR8799。对于低质量行星系统，多行星相互作用在设定系统结构方面起着重要作用。在本文中，我们探讨了这些高质量、多行星系统的稳定性。虽然存在预测低质量下系统稳定性如何随行星间距变化的经验关系，但我们表明，将这些关系外推到超级木星质量可能导致对高质量、紧密排列系统稳定性的高一个数量级的高估。我们表明，在低质量和高质量行星情况下，重叠的平均运动共振会触发混沌轨道演化，从而导致系统不稳定。我们将部分行为差异归因于在高行星-恒星质量比下二阶共振的重要性增加。我们利用定制的高质量行星结果来估计可能存在于双组分碎片盘系统中的最大行星数量，这些碎片盘的间隙可能表明存在大质量天体。 显示英文摘要

摘要： In the coming years, high contrast imaging surveys are expected to reveal the characteristics of the population of wide-orbit, massive, exoplanets. To date, a handful of wide planetary mass companions are known, but only one such multi-planet system has been discovered: HR8799. For low mass planetary systems, multi-planet interactions play an important role in setting system architecture. In this paper, we explore the stability of these high mass, multi-planet systems. While empirical relationships exist that predict how system stability scales with planet spacing at low masses, we show that extrapolating to super-Jupiter masses can lead to up to an order of magnitude overestimate of stability for massive, tightly packed systems. We show that at both low and high planet masses, overlapping mean motion resonances trigger chaotic orbital evolution, which leads to system instability. We attribute some of the difference in behavior as a function of mass to the increasing importance of second order resonances at high planet-star mass ratios. We use our tailored high mass planet results to estimate the maximum number of planets that might reside in double component debris disk systems, whose gaps may indicate the presence of massive bodies.