论文标题
一个世纪以来的经典Cepheid SV Vulpeculae（1913-2022）的时期变化
Period variation of the classical Cepheid SV Vulpeculae over a century (1913-2022)
论文作者
论文摘要
这项研究分析了经典Cepheid Sv vul的338个新时代，CCD，光电和摄影最高时期。相应的观察结果是在1913年至2022年之间进行的。在这个新的和较大的观察基础上，重新访问了这颗主要天体物理意义的这颗星星的周期变化。在没有与理论或以前的研究相矛盾的情况下，我们表明视觉观察对于长期监测良好选择的明亮头孢虫的周期变化很重要。这项研究确定了-250 s/yr的SV VUL的变化率。目前，其期间短于45天。
This study analyzes 338 new times of visual, CCD, photoelectric and photographic maxima of the classical Cepheid SV Vul. The corresponding observations were made between 1913 and 2022. On this new and large observational basis, the period variations of this star of major astrophysical interest are re-visited. Without contradicting the theory or previous studies, we show that visual observations are important for a long-term monitoring of the period variations of well-selected bright Cepheids. This study establishes the period rate of change of SV Vul at -250 s/yr. Its period is currently shorter than 45 days.
