论文标题
日食时机的可变性：V471 Tauri的情况
Variability of eclipse timing:the case of V471 Tauri
论文作者
论文摘要
几十年来，后共同的信封二进制V471 Tauri一直是感兴趣的对象。 V471 Tau由于其进化状态和独特的特性，例如它的磁积聚和日食定时变化（ETV）。以前的作者通过不同的，有时是矛盾的理论解释了ETV。在本文中，我们介绍并分析了该恒星日食时机的变化。我们在过去十年中观察到了V471 Tauri，并涵盖了其周期变化的第二个周期。根据我们对所提供数据的分析，我们评估了该系统中棕色矮人的可能存在，并得出其轨道参数。我们将动态建模的结果与Applegate机制理论预测的解决方案进行了比较，这些解决方案已在最近的研究中开发。我们发现，观察到的ETV不能仅通过二进制的其他组件的存在来解释。
The post-common envelope binary V471 Tauri has been an object of interest for decades. V471 Tau shows various phenomena due to its evolutionary state and unique properties, e.g. its magnetic accretion and eclipse timing variation (ETV). Previous authors explained the ETVs by different, sometimes contradictory theories. In this paper, we present and analyse the variability of the eclipse timing of this star. We observed V471 Tauri over the last ten years and covered the second cycle of its period variation. Based on our analysis of the presented data, we assess the possible existence of a brown dwarf in this system and derive its orbital parameters. We compare the results of our dynamical modelling to the solution predicted by Applegate-mechanism theories, which have been developed in recent studies. We found that the observed ETV cannot be explained only by the presence of additional components to the binary.
