太阳附近主序星的光度函数

LUMINOSITY FUNCTION OF THE MAIN SEQUENCE STARS IN THE SOLAR NEIGHBORHOOD

本文作者利用近距星星表第三版（ＣＮＳ３）初始星表分析研究了太阳附近主序星的光度函数，并与用近距星星表弟二版（ＣＮＳ２）所得结果和由测光视差方法得到的光度函数进行了比较。结果表明，对于绝对目视星等亮于１５．５等的恒星，由ＣＮＳ３得到的光度函数可能更接近于真实情况。同时还给出了由ＣＮＳ３得到的巨星（含亮巨星）和Ａ、Ｆ、Ｇ、Ｋ、Ｍ型主序星的光度函数。

The preliminary version of the Third Catalogue of Nearby Stars(CNS3) was analyzed. A study of the stellar luminosity function in the solar neighborhood with CNS3 was described. Luminosity function for main sequence stars derived from CNS3 was compared with that from CNS2 and that based on the method of photometric parallaxes.The results from CNS3 for stars with Mv<15.5 were well defined. Lumionosity function for the giants and A,F,G,K and M type main sequence stars was also given respectively,based on CNS3.