Galactic Kinematics Derived From Data in the RAVE5, UCAC4, PPMXL, and Gaia TGAS Catalogs

The three-dimensional velocities of stars with high-precision positions, proper motions, and parallaxes from the Gaia TGAS catalog and radial velocities from the RAVE5 catalog are examined. A sample of 92395 stars with estimated ages yields the following kinematic parameters: (U, V, W)=(9.42, 20.34, 7.21)±(0.12, 0.10, 0.09) km/s, Ω = 26.29 ± 0.39 km/s/kpc and Ω′=3.89 ± 0.08 km/s/kpc2, where V0=210±6 km/s (for the assumed R0 = 8.0 ± 0.2 kpc), as well as the Oort constants A=15.57±0.31 km/s/kpc and B = – 10.72±0.50 km/s/kpc. It is shown that the values of the parameters Ω and Ω′ have good stability, depending on the age of the stars. The parameters of the Bottlinger model obtained separately from the radial velocities in the RAVE5 catalog and from the proper motions of the stars in the Gaia TGAS, UCAC4, and PPMXL catalogs are compared. These parameters agree well with one another whether they are determined from the proper motions of the stars in the terrestrial catalogs or from observations reported in the Gaia TGAS catalog and made with the HIPPARCOS and Gaia spacecraft. At the same time, it was found that the parameters of the Bottlinger model calculated using the radial velocities may differ from the corresponding values derived from the proper motions of the stars. A reduction of the radial velocities of the stars in the RAVE5 catalog is proposed that eliminates these differences.