标题： 不稳定过程在紧密双星RR天蝎的研究调查 显示英文标题

标题： Investigation of Non-Stable Processes in Close Binary Ry Scuti

摘要： 我们展示了对格鲁吉亚阿巴斯图马尼天文台1972年至1990年间以及乌兹别克斯坦迈丹尼克天文台1979年至1991年间获得的早期类型密近双星系统RY Scuti旧光电数据的重新分析结果。 揭示了RY Scct在不同周期、不同月份和不同年份之间的不稳定过程。这种变化范围从百分之几到十分之几个星等。此外，在几年的时间尺度上，系统的光变曲线在第一次极大值附近显示出周期性变化。这与一些明亮蓝变星（LBV）中观察到的一些类似变化有很大的研究兴趣。这也可能与RY Scct抛射其星云的问题密切相关。 显示英文摘要

摘要： We present results of reanalysis of old electrophotometric data of early type close binary system RY Scuti obtained at the Abastumani Astrophysical Observatory, Georgia, during 1972-1990 years and at the Maidanak Observatory, Uzbekistan, during 1979-1991 years. It is revealed non-stable processes in RY Sct from period to period, from month to month and from year to year. This variation consists from the hundredths up to the tenths of a magnitude. Furthermore, periodical changes in the system's light are displayed near the first maximum on timescales of a few years. That is of great interest with regard to some similar variations seen in luminous blue variable (LBV) stars. This also could be closely related to the question of why RY Sct ejected its nebula.