论文标题
稳健检测温暖木星的过境影响参数的变化
Robustly detecting changes in warm Jupiters' transit impact parameters
论文作者
论文摘要
来自相互倾斜的Perturber的Torques可以更改过境行星的冲击参数，从而导致运输形状和持续时间的变化。对影响参数变化的检测和上限对行星系统的三维体系结构产生有价值的约束。温暖的木星的限制特别有趣，因为它们使我们能够测试引用相互倾斜的Perturber的原始理论。由于温暖的木星的高信噪转移，影响参数的变化是可行的。但是，我们在这里表明，允许影响参数统一而独立于过境变化，从而导致对变化的推论是错误的，从而传播了对Perturber的错误推断。我们证明，对影响参数的变化的适当先验会减轻此问题。我们将我们的方法应用于文献中的八个系统，并为温暖的木星kepler-46b的影响参数变化找到证据。我们以对光曲线拟合的建议得出结论，包括何时适合冲击参数与过境持续时间。
Torques from a mutually inclined perturber can change a transiting planet's impact parameter, resulting in variations in the transit shape and duration. Detection of and upper limits on changes in impact parameter yield valuable constraints on a planetary system's three dimensional architecture. Constraints for warm Jupiters are particularly interesting because they allow us to test origins theories that invoke a mutually inclined perturber. Because of warm Jupiters' high signal-to-noise transits, changes in impact parameter are feasible to detect. However, here we show that allowing the impact parameter to vary uniformly and independently from transit to transit leads to incorrect inferences about the change, propagating to incorrect inferences about the perturber. We demonstrate that an appropriate prior on the change in impact parameter mitigates this problem. We apply our approach to eight systems from the literature and find evidence for changes in impact parameter for warm Jupiter Kepler-46b. We conclude with our recommendations for light curve fitting, including when to fit impact parameters vs. transit durations.
