AI 中文总结
研究长周期系外行星系统动力学形成，利用MESA恒星演化插值结果在REBOUND中模拟，探索演化宽双星系统中行星动力学效应，研究长周期气态巨行星演化机制及伴星对系外行星稳定性影响。
AI 中文摘要
由于观测参数较少，长周期巨型系外行星的动力学形成和演化尚未得到很好的限制。在本研究中，我们探索了一个演化的宽双星系统中一颗恒星周围的多行星系统中的动力学效应。我们使用了REBOUND N体积分中MESA恒星演化的插值结果，对一系列不同行星质量的恒星周围配置（S型轨道）进行了模拟，该恒星从主序星演化为白矮星。进行了无恒星演化的对照模拟以分离质量损失的影响。尽管目前已知很少有系外行星具有长周期和中等偏心率，但我们研究了该特定区域内长周期气态巨行星的演化机制。我们还模拟了多行星系统中一颗演化的单星，并得出结论，伴星使系外行星更不稳定，并将幸存者集中在50天文单位的半长轴内。
英文摘要
The dynamical formation and evolution of long-period giant exoplanets have not been well constrained due to the few observational parameters. In this study, we explore the dynamical effects in a multi-planetary system around one star of an evolving wide binary system. We used an interpolated result of a MESA stellar evolution inside REBOUND N-body integrations to perform simulations with a range of distinct planetary masses in a circumstellar configuration (S-type orbit), centered on a primary star that evolves from the main sequence star to a white dwarf. Control simulations without stellar evolution were performed to isolate the effects of mass loss. Although few exoplanets are currently known to possess long-period and moderate eccentricities, we investigated the evolution mechanisms of long-period gas giants within this specific regime. Although these exoplanets often remain undetected due to their wide orbits and long periods, we propose that their formation pathways are robust throughout the evolution of binary systems. We also simulated an evolved single star in a multi-planetary system and concluded that the secondary star made the exoplanets more unstable and concentrated the survivors within a semi-major axis of 50 au.
CommentsAccepted for publication in ApJ
