Hyades cluster: motion, membership, and distance
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New absolute proper motions referred directly to external galaxies, photographic photometry, and cluster membership probabilities have been determined for over 600 faint stars...
针对600余颗暗弱恒星，研究人员已测定了直接以河外星系为参考系的全新绝对自行、照相测光数据以及星团成员概率……
