Measuring the stellar rotation of one of the components in eclipsing binaries (EBs) or planetary systems is a challenge task. The difficulty is mainly due to the complexity of analyzing, in the same light curve, the signal from the stellar rotation mixed with the transit signal of a stellar or substellar companion, like a brown dwarf or planet. There are many methods to correct the long-term trend of the light curve. However, the correction often erases the signal of the stellar rotation from spots crossing the visible stellar disk and other weaker signals like planets. In this work, we present the DiffeRencial flUx Method of cuTting Off biNariES (DRUM TONES) to identify the signal of the binary transits and disentangle it from stellar rotation planet signals. We present our technique with applications to EBs from CoRoT, Kepler, Kepler K2 and TESS missions. We also applied our method to simulated synthetic EB from the PLATO mission. Our method shows good agreement in the determination of stellar rotation periods for few observed targets from last space missions, as well it is naturally useful for future European mission, such as PLAnetary Transits and Oscillations of stars (PLATO).

中文翻译：

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从PLATO任务光变曲线研究恒星自转的优化切断传输算法

测量食双星 (EB) 或行星系统中一个组件的恒星自转是一项具有挑战性的任务。困难主要是由于在同一光变曲线中分析来自恒星旋转的信号与恒星或亚恒星伴星（如棕矮星或行星）的凌日信号混合的复杂性。校正光变曲线长期趋势的方法有很多。然而，校正通常会从穿过可见星盘的点和其他较弱的信号（如行星）中抹去恒星自转的信号。在这项工作中，我们提出了截断双星（鼓音）的差分通量方法，以识别双星凌日信号并将其与恒星自转行星信号分离。我们将我们的技术应用于 CoRoT、Kepler、开普勒 K2 和苔丝任务。我们还将我们的方法应用于来自 PLATO 任务的模拟合成 EB。我们的方法在确定上次太空任务中少数观察到的目标的恒星旋转周期方面表现出良好的一致性，并且它对未来的欧洲任务自然有用，例如行星凌日和恒星振荡 (PLATO)。