标题： 矮新星AL Com在超级爆发中的CCD测光研究 显示英文标题

标题： CCD Photometry of Dwarf Nova AL Com in Superoutburst

摘要： 我们报道了矮新星AL Com在超级爆发期间的CCD光学照相术。超级爆发前，光曲线变化剧烈，不同夜晚的主要周期约为41分钟和81.5分钟。观测到的超级爆发周期为82.5分钟，并且似乎很稳定。基本周期的一次谐波也存在。我们检测到了一个对应于78.1分钟周期的微弱信号。怀疑78.1分钟或81.5分钟之一可能是该系统轨道运动的一个可能特征。 显示英文摘要

摘要： We report a CCD optical photometry of a dwarf nova AL Com in superoutburst. Before superhumps occurred the light curve was highly variable with dominant periods about 41 minutes and 81.5 minutes for different nights. The period of observed superhumps is 82.5 minutes and seems to be stable. The first harmonic of the basic period is also present. We detected a weak signal corresponding to period 78.1 minutes. One of the periods 78.1 or 81.5 is suspected to be a possible signature of orbital motion in the system.