论文标题
检测触点二进制二进制的周期性变化
Detection of a cyclic period change in the contact binary TU UMi
论文作者
论文摘要
这项研究旨在计时二元星tu Umi的蚀。最小值的时代取自文献，我们的观察结果以及2019年至2022年之间的苔丝观察结果。系统的轨道时期分析表明，循环振荡，幅度为0.0081d，幅度为9.03年，持续下降，伴随着$ dp/dp dp dp的速度 - 持续下降。 10^{ - 7} \，\ mathrm {d} \，\ mathrm {yr}^{ - 1} $。我们研究系统轨道周期的世俗演化以及系统中主要成分的第三个伴侣或磁性活性周期的可能性。
This study aims at timing the eclipses of the binary star TU UMi. The times of minima are taken from the literature, from our observations in April 2004 and from TESS observations between 2019 and 2022. The orbital period analysis of the system indicates that there is a cyclic oscillation with an amplitude of 0.0081d and a period of 9.03 yr, accompanied by a continuous decrease at a rate of $dP/dt =-1.12 \times 10^{-7}\,\mathrm{d}\, \mathrm{yr}^{-1}$. We study the secular evolution of the orbital period of the system and the possibility of the existence of a third companion or the magnetic activity cycle of the primary component in the system.
