Secular evolution of eccentricity in protoplanetary discs with gap-opening planets
Secular evolution of eccentricity in protoplanetary discs with gap-opening planets
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具有间隙开放行星的原行星盘偏心率的长期演化
DOI：
10.1093/mnras/stx426
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发表时间：
2017
影响因子：
4.8
通讯作者：
G. Ogilvie
中科院分区：
文献类型：
--
作者：
J. Teyssandier;G. Ogilvie
我们探索了吸积盘偏心率的演变，该吸积盘受到一颗嵌入行星的扰动，该行星的质量足以在吸积盘中打开一个大间隙。讨论了表示偏心盘的轨道平均运动的各种方法。我们通过流体动力学模拟来表征导致偏心率增加的线性不稳定性。我们用数值方法恢复了已知结果，即当行星与恒星的质量比超过 0.003 时，盘中的偏心率可能会增长。对于大于此阈值的质量比，从模拟得出的进动速率和增长率以及偏心模式的形状与偏心盘线性理论的预测相吻合。我们研究偏心率增长最终饱和到非线性状态的机制。
We explore the evolution of the eccentricity of an accretion disc perturbed by an embedded planet whose mass is sufficient to open a large gap in the disc. Various methods for representing the orbit-averaged motion of an eccentric disc are discussed. We characterize the linear instability which leads to the growth of eccentricity by means of hydrodynamical simulations. We numerically recover the known result that eccentricity growth in the disc is possible when the planet-to-star mass ratio exceeds 0.003. For mass ratios larger than this threshold, the precession rates and growth rates derived from simulations, as well as the shape of the eccentric mode, compare well with the predictions of a linear theory of eccentric discs. We study mechanisms by which the eccentricity growth eventually saturates into a non-linear regime.
圆盘-行星相互作用的全局 3D 模拟对偏心率增长的限制
影响因子：
4.8
作者：
Dunhill A
通讯作者：
Dunhill A