【摘要】 <正> 在前一个工作里,我们把“恒星视线速度总表”里一万多个恒星的视线速度 V_r 加以分析,得出了各光谱型恒星的视线速度绝对值的平均值,并设计了一个统计方法来作太阳运动和银河系自转的改正.在那个工作中,我们注意到光谱内有发射线的恒星的视线速度,一般说来比同光谱型的普通恒星大.在表1内列出了9种光谱型的恒星的数目和视线速度绝对值的平均更多还原

【Abstract】 In a previous work(Acta Astronomia Sinica,Vol.5,pp.49—57,1957), the mean values of the absolute values of radial velocities were obtain- ed for stars of various spectral types.In the course of that work,it was noticed that for emission stars was in most cases greater than that for ordinary stars of the same spectral type.In Table 1 is listed the num- ber of stars n and the values of for nine spectral types,ordinary stars on the left side,emission stars on the right.The values of listed in this table have not yet been corrected for solar motion and galactic rotation.For B,A,dF,dG,dK,dM,gM,the corrected values of have already been obtained in the previous work by the use of a statistical me- thod of correction.For the rest,only Be and gMe stars are numerous enough to apply the statistical method of correction;for the other types of emission stars as well as O,N stars,ordinary method of correction has to be used.The apices and velocities of solar motion adopted are listed in Table 2.In making the correction for galactic rotation,distance is obtain- ed from the visual magnitude and the mean absolute magnitude of each spectral sub-type,taking into account interstellar absorption.For N and Ne stars,M was taken to be—2.0. of dM stars was calculated again by using ordinary method of correction.For dM and dMe stars,galactic rotation was not taken into account.更多还原