摘要
本文刊载了北天空三个区域(KNO 10,KNO 27,KNO148)的恒星相对于河外星系的自行(表4).使用的资料由佘山40厘米赤道仪摄取(见表1)。归算方案见方程(1)。归算中,剔除了大自行的定标星,同时对星系和底片对采用加权法处理。最后结果:在x和y方向,星系平均“自行”的标准差分别为±0″.0017/年和±0″.0015/年;待测星的绝对自行的标准差为±0″.0021/年和±0″.0019/年;AGK 3星表星的绝对自行的标准差为±0″.0035/年和±0″.0039/年(见表3)。
The proper motions of the 334 stars with respect to galaxies in three areas of the northern sky are presented in this paper (Table 4). They were derived from 7 plate pairs with the Z6-Se φ40cm astrograph. As the reference system 3 galaxies were used in each area.
The reduction program with 8 coefficients were adopted [equation (1)]. In the reduction both the reference stars having proper motions larger than 0''.05/year were rejected for obtaining plate constants and different weights were given to the galaxies and the plate pairs. The standard errors of the mean proper motions of the galaxies are equal to ±0'.0017 and ±0'.0015 in X and Y directions respectively. The standard errors of the absolute proper motions of the object stars are equal to ±0'.0021 and ±0'.0019 in X and Y directions, and those of the AGK3 stars are ±'.0035 and ±0'.0039, respectively (per year) (Table 3). The precisions of absolute proper motions of every star were given in Table 4, too.
出处
《中国科学院上海天文台年刊》
1989年第10期77-87,共11页
Annals Shanghai Astronomical Observatory Chinese Academy of Sciences
