论文标题
Hipparcos pleiades视差错误也是正确的运动错误
The Hipparcos Pleiades parallax error is also a proper motion error
论文作者
论文摘要
来自Hipparcos目录的PLEIADES开放群集的平均视差大于真实值的平均值约为1个MAS。 Makarov（2002）提出了此错误的起源以及校正算法的可能算法。使用更准确的GAIA数据重新评估了该问题，重点是预测对pleiades适当运动的校正。 52个普通恒星的准确确定的差异与所有三个参数的形式不确定性中的这些估计值接近这些估计值，这强烈表明所提出的解释是正确的。随着对系统矢量字段的调整，该矢量字段装有126个矢量球形谐波，这些差异为$（+0.39，\， - 0.74）$ MAS yr yr $^{ - 1} $。简要讨论了河马中小规模的适当运动和位置误差的含义。
The mean parallax of the Pleiades open cluster from the Hipparcos catalog is larger than the true value by approximately 1 mas. The origin of this error, as well as a possible algorithm of correcting it, was proposed by Makarov (2002). The problem is reassessed using the more accurate Gaia data with a focus on the predicted correction to the Pleiades proper motions. The accurately determined differences Gaia - Hipparcos for 52 common stars are close to these estimates within the formal uncertainties for all three parameters, which strongly suggests that the proposed interpretation was correct. With adjustments for the systematic vector field fitted with 126 vector spherical harmonics to degree 7, these differences amount to $(+0.39,\,-0.74)$ mas yr$^{-1}$. The implications of small-scale proper motion and position errors in Hipparcos for present day astrometry are briefly discussed.
