7颗银河场天零RR型星绝对自行的测定  

DETERMINATION OF ABSOLUTE PROPER MOTIONS FOR SEVEN GALACTIC FIELD RR LYRAE STARS

作　　者：王家骥[1] 毛亚庆[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》1999年第20期48-53,共6页Annals Shanghai Astronomical Observatory Chinese Academy of Sciences

基　　金：中国科学院天文委员会天测天力分支学科组资助

摘　　要：给出了RYPsc，XXAnd，RRCet，XXHya，TVLeo，UCom，SWAqr等7颗银河场天琴RR型星基于NPM星表的河外参考架的绝对自行的测定结果，并与万籁等人、NPM和Hipparcos的结果作了比较。测量和归算的方法已在本年刊第18期（1997年）第49页上发表的一篇论文中叙述。本工作的结果的内部精密度明显比NPM星表好。比较表明，这些结果与由Hipparcos星表从光学方面所代表的ICRS符合得非常好。<Abstrat>The results of the determination of absolute proper motions based on the extragalactic reference frames from the NPM Catalogue for seven Galactic field RR Lyrae stars, RY Psc, XX And, RR Cet, XX Hya, TV Leo, U Com, and SW Aqr, are given and compared with the results from Wan et al., NPM,and Hipparcos. The methods of measure and reduction are described in a previous paper published in the issue No. 18(1997), p .49 of these Annals. The internal precision of the results of this work is significanily better than the MPN Catalogue and the comparison shows that these results is very good agreement with the ICRS represented optically by the Hipparcos Catalogue.

关 键 词：恒星 天琴RR型星 绝对自行 NPM星表 河外参考架 

分 类 号：P123.41[天文地球—天体测量]