Abstract This is the second of a series of four papers, the goal of which is to identify the overcontact eclipsing binary star systems for which a solid case can be made for mass exchange. To reach this goal, it is necessary first to identify those systems for which there is a strong case for period change. We have identified 60 candidate systems; in the first paper (Nelson et al., 2014) we discussed 20 individual cases; this paper continues with the next 20. For each system, we present a detailed discussion and evaluation concerning the observational and interpretive material presented in the literature. An eclipse timing (ET) diagram (or diagrams), commonly referred to as an "O–C diagram", that includes the latest available data accompanies each discussion. In paper 4, we will discuss the mechanisms that can effect period change and which of the 60 systems can be reliably concluded to exhibit mass exchange; we will also provide a list of marginal and rejected cases suitable for future work.

中文翻译：

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对 W UMa 食双星中质量交换的周期分析和影响的批判性回顾：论文 1

摘要 这是四篇系列论文中的第二篇，其目标是确定可以为质量交换制作固体案例的过度接触食双星系统。为了达到这个目标，首先有必要确定那些有充分理由进行周期变化的系统。我们已经确定了 60 个候选系统；在第一篇论文 (Nelson et al., 2014) 中，我们讨论了 20 个个案；本文继续接下来的 20。对于每个系统，我们对文献中提供的观察和解释材料进行了详细的讨论和评估。日食计时 (ET) 图（或多个图），通常称为“O-C 图”，其中包含最新的可用数据，并伴随每次讨论。在论文 4 中，我们将讨论影响周期变化的机制，以及 60 个系统中哪些可以可靠地得出质量交换；我们还将提供适合未来工作的边缘和拒绝案例列表。