论文标题
自1999年以来23年以来，槟榔的Ubvri光度法
UBVRI photometry of Betelgeuse over 23 years since 1999
论文作者
论文摘要
我们使用相同的光度法报告了1999年至2022年槟榔的连续UBVRI波段光度法的结果。在我们的观察结果中有两个优点：（1）我们使用光电二极管作为检测器来避免饱和，并且（2）我们的数据集包括u波段光曲线，在最近的CCD光泽中未广泛观察到。使用光曲线，我们进行了周期性分析，发现〜405-和〜2160天。我们还讨论了20年或更长时间的长期变化的初步检测。最后，我们讨论了2019年末至2020年初的“昏暗”事件中U-B颜色指数的特殊变化。
We report the results of our continuous UBVRI-band photometry of Betelgeuse from 1999 to 2022 using the same photometric system. There are two advantages in our observation: (1) we used a photodiode as a detector to avoid saturation, and (2) our data set includes U-band light curve, which is not widely observed in recent CCD photometries. Using our light curves, we conducted the periodicity analysis, and found ~405- and ~2160-day periods. We also discuss the tentative detection of a long-period variation over 20 years or longer. Finally, we discuss the peculiar variation of the U-B color index during the "Great Dimming" event between late 2019 and early 2020.
