摘要
本文提出了判断双星自转同步性的一种新方法．把假定双星为同步自转时的拱线进动周期的理论计算值与该双星的观测值之比作为同步自转参量，以判断双星同步自转情况．利用此方法对ＹＣｙｇ和ＣＷＣｅｐ两对双星系统中子星同步自转情况做了判断．结果表明，其中ＣＷＣｅｐ为同步自转双星，ＹＣｙｇ为接近同步自转双星．最后将所得结果与其他作者用直接测量自转速度方法所得的结果进行比较。
The present paper suggests a new method for judging the synchronous rotation of binary stars. The ratio of the theoretical apsidal period for the assumed synchronous binary to the observed value of the same star is used as a synchronous parameter to judge the synchronization of binary stars. The status of synchronization for Y Cyg and CW Cep are judged by using this new method. It is shown that Y Cyg is a near synchronous binary and CW Cep is a synchronous binary. The result obtained by this method is in agreement with those by other authors.
关键词
双星
子星自转
同步性判断
binary stars — stellar rotation —synchronization judgement
