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Revisiting the Local Kinematics of the Milky Way using the New Hipparcos Data

Zhu, Zi; Yuan, Fang-Ting; Kong, Da-Li

With the new Hipparcos data recently released, we reexamine the kinematics in the solar neighborhood. Two different populations of objects, namely the thin-disk O-B5 stars and the thick-disk K-M giants, are selected for tracing the kinematical parameters of the Galaxy. Using a 3-D kinematical model, the components of the solar motion and the Oort …