论文标题
确认K2-138的3：2共振链
Confirming the 3:2 Resonance Chain of K2-138
论文作者
论文摘要
轨道共振的研究允许紧凑系统的行星特性限制。 K2-138是一颗早期的K型恒星，有六个行星，其中五个被认为是最长的3：2平均运动共振链。为了观察并有可能验证K2-138行星的谐振行为，我们使用先前测量的参数运行N体模拟。通过我们的分析，我们发现99.2％的模拟导致3：2共振的链，尽管只有11％显示了五个星际的共振链。我们发现我们能够使用共振来限制行星的轨道周期和质量。我们通过磁盘迁移探索该系统的可能性，并使用行星结构代码研究每个行星的潜在组成。
The study of orbital resonances allows for the constraint of planetary properties of compact systems. K2-138 is an early K-type star with six planets, five of which have been proposed to be in the longest chain of 3:2 mean motion resonances. To observe and potentially verify the resonant behavior of K2-138's planets, we run N-body simulations using previously measured parameters. Through our analysis, we find that 99.2% of our simulations result in a chain of 3:2 resonances, although only 11% of them show a five-planet resonance chain. We find we are able to use resonances to constrain the orbital periods and masses of the planets. We explore the possibility of this system forming in situ and through disk migration, and investigate the potential compositions of each planet using a planet structure code.
