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Rotation of the Hyades derived from Hipparcos data

Vereshchagin, S. V.; Reva, V. G.; Chupina, N. V.

Data from the Hipparcos catalog are used to study the internal kinematics of the Hyades cluster. Cluster members whose proper motions and parallaxes are known with precisions not less than 5 mas/yr and 3 mas were used. The proper motions were reduced to the cluster center. A correlation between a component of the tangential velocity and the parall…