开普勒双星圆化过程中的潮汐耗散
Tidal Dissipation from Circularization in Kepler Binaries
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中文总结 AI 辅助
本研究通过贝叶斯分析105颗短周期类太阳开普勒双星，约束潮汐耗散参数$\log Q_*' \approx 6.75$，发现其不依赖周期和质量，并成功解释圆与非圆轨道重叠现象。
中文摘要 AI 辅助
理解潮汐耗散是解释短周期双星等系统演化的必要步骤。目前这一理解尚未达成，事实上存在多种不同的潮汐建模方法。通过对单个系统逐一进行贝叶斯分析，我们为105颗短周期类太阳开普勒双星的耗散提供了额外约束。我们考虑了与周期相关的$Q$值以及恒星演化，并将观测不确定性传播到约束的不确定性中。我们发现一组约束为$\log Q_*' \approx 6.75$，且没有明显的潮汐周期依赖性。我们也没有检测到$Q$的质量依赖性。我们推断的潮汐耗散方案成功再现了arXiv:2112.05868报道的类太阳双星中几乎完全圆轨道与显著非圆轨道之间意外的重叠现象。
英文摘要
Understanding tidal dissipation is a requisite step for explaining the evolution of systems such as short-period binaries. This understanding has not yet been achieved, and in fact there are many different approaches to modelling tides. By using Bayesian analysis on a system-by-system basis, we provide additional constraints on dissipation for 105 short-period Sun-like Kepler binaries. We account for period-dependent $Q$ and stellar evolution, and propagate observational uncertainties to uncertainties in our constraints. We find a group constraint of $\log Q_*' \approx 6.75$, with no apparent dependence on tidal period. We also do not detect mass dependence for $Q$. Our inferred prescription for the tidal dissipation successfully reproduces the unexpected overlap between almost perfectly circular and significantly non-circular orbits in binaries of Sun-like stars reported by arXiv:2112.05868.
发表机构
- The University of Texas at Dallas（德克萨斯大学达拉斯分校）
- The University of Lethbridge（莱斯布里奇大学）
机构由 AI 辅助整理，请以论文原文为准。
