FK5系统中60颗射电星自行  

THE PROPER MOTIONS OF 60 RADIO STARS IN THE FK5 SYSTEM

作　　者：王叔和[1] 须同祺[1] 陆佩珍[1] 唐正宏[1] 

机构地区：[1]中国科学院上海天文台,上海200030

出　　处：《中国科学院上海天文台年刊》1996年第17期125-129,共5页Annals Shanghai Astronomical Observatory Chinese Academy of Sciences

基　　金：国家自然科学基金

摘　　要：本文利用较长时间段的两期照相观测资料，对60颗射电星进行坐标系统和参考星表的系统统一后，求得它们在FKS系统中的自行。这些射电星的平均自行精度在赤经和赤纬方向上分别为主0”．0043／yr和±0”．0042／yr，比原来SAO星表的自行精度±0”．o11g／rr和±0”．0113／yr高2．7倍左右。In this paper, the photographic catalogues with the longer observational intervals areused. After transforming the system of catalogues and the epoch coordinate systems, theproper motions of 60 radio stars(in the FK5 system) are obtained. The mean accuracies ofthe proper motions are ±0'. 0043/year and ±0. 0042/year in right ascension and declina tion, respectively,and the accuracies of proper motions are better 2. 7 times than that in theSAO catal0gue, ± 0'.01 19/year and ±0'. 0113/year.

关 键 词：照相天体测量 射电星 自行 FK5系统 参考星表 

分 类 号：P157.7[天文地球—天文学]