标题： Castor和大熊座星流的空间结构和运动学细节 显示英文标题

标题： Details of the spatial structure and kinematics of the Castor and Ursa Major streams

摘要： 根据多位作者的数据，编制了Castor星流成员的列表。 一些恒星的成员概率根据个体顶点、多重性、观测误差和特殊性进行了修订。 使用顶点图方法确定了Castor运动集团的顶点。 比较了Castor和大熊座星流的参数，发现这两个星流在顶点图上的位置相差225度，这意味着这两个集团几乎朝相反方向运动。 两个运动集团的恒星在空间中相互混合，Castor星流所占体积比UMa星流小，并位于其中。 我们的结果可能有助于理解太阳附近银河盘的形态。 显示英文摘要

摘要： A list of the Castor stream members is compiled based on the data from various authors. The membership probabilities for some stars are revised based on the individual apex, multiplicity, observational errors, and peculiarity. The apex of the Castor moving group is determined using the apex diagram method. The parameters of the Castor and Ursa Major streams are compared and the positions of the two streams on the apex diagram are found to differ by 225deg, implying that the two groups move in almost opposite directions. Stars of both moving groups are intermixed in space, the Castor stream occupies a smaller volume than the UMa stream and is located inside it. Our results can be useful for understanding the morphology of the Galactic disk in the Sun's vicinity.