Abstract

The variations in the orbital period of the eclipsing binary system Z Per have been analyzed. It has been shown that the variations in the period can be represented as a superposition of the secular decrease in the period at a rate of 1.61 × 10^–6 days/year and its three cyclic variations with periods of 22.6, 37.9, and 62.4 years. Z Per is most likely a quadruple system with periods of additional orbits equal to 22.6 and 62.4 years, while cyclic oscillations with a period of 37.9 years are a consequence of the magnetic activity of the secondary component. The secular decrease in the orbital period of the eclipsing binary system can be caused by the loss of angular momentum due to magnetic braking.

中文翻译：

---

渐进二元系统Z Per的轨道周期变化中的多周期

摘要

分析了日蚀双星系统Z Per的轨道周期变化。研究表明，周期的变化可以表示为周期内长期下降的叠加，速率为1.61×10 ^–6天/年，以及周期为22.6、37.9和62.4年的三个周期变化。Z Per最有可能是一个四重系统，其附加轨道的周期分别为22.6和62.4年，而周期振动为37.9年的周期性振荡是次级分量磁活动的结果。蚀双星系统轨道周期​​的长期减少可能是由于电磁制动导致的角动量损失所致。