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Kinematics of M-Type Giant Semi-Regular Variables from the Hipparcos Catalogue

Yeşilyaprak, C.; Aslan, Z.

The kinematics of M-type (O-rich) giant semi-regular (SR) variable stars were examined. They were grouped with respect to their relative parallax errors (ɛ_π/π) in order to study the stars having relatively better parallax, and with the period limit (70 d). The spatial and velocity distributions were examined and the results were compare…