摘要
为了研究长焦距天体测量望远镜的成象特性和确定天体测量底片归算的正确模型，需要建立高精度的天体测量标准区。本文为建立高精度的昂星团本体测量标准区提供了一份J2000．0历元FKS系统的参考星表。标准区的范围取为以昂宿六为中心的2°×1°．5天区，选取这一天区内PPM和ACRS星表中的恒星作为基准参考星。对于这两份星表中的共同星，把它拉的位置和自行按误差计权合并。为了把极限星等从V=11等左右延伸到14等左右，把Eichhorn等（1970）的位置和自行及相应的Hertzsprung（1947）和Jones（1973）自行归算到与基准参考星同一系统，从中选取一部分恒星作为扩展参考星。由基准参考星和扩展参考星组成了一份479颗星的参考星表。
A catalogue Of reference stars on the J2000. 0 FK5 system is prepared for establishing ahigh-precision astrometric standard region in the Pleiades. The region is centered at V Tauand covers approximately 2 by l. 5 degrees in right ascension and in declinati0n. The starsfrom PPM and ACRS in this region are selected as basic reference stars- The common starsin PPM and ACRS are combined with weights ca1culated by their errors. In order to extendthe magnitude limit from about l1' to 14', the extended reference stars are selected, whichpositions from Eichhorn et al (197O ) and proper motions from Eichhorn et al (197O ),Hertzsprung (1947 ) and Jones (1973 ), respectively, are reduced the same system as basicreference stars.
出处
《中国科学院上海天文台年刊》
1995年第16期53-75,共23页
Annals Shanghai Astronomical Observatory Chinese Academy of Sciences
