Milky Way thin and thick disk kinematics with GAIA EDR3 and RAVE DR5
  We present a detailed analysis of kinematics of the Milky Way disk in solar
neighborhood using GAIA DR3 catalog. To determine the local kinematics of the
stellar disks of the Milky Way galaxy we use a complete sample of 278,228 red
giant branch (RGB) stars distributed in a cylinder, centered at the Sun with a
1 kpc radius and half-height of 0.5 kpc. We determine separately the
kinematical properties of RGB stars for each Galactic hemisphere in search for
possible asymmetries. The kinematical properties of the RGB stars reveal the
existence of two kinematically distinct components: the thin disk with mean
velocities ${V_R}, {V_{\phi}}, {V_Z}$ of about -1, -239, 0 km s$^{-1}$
correspondingly and velocity dispersions $\sigma_R, \sigma_{\phi}, \sigma_Z$ of
31, 20 and 11 km s$^{-1}$, and the Thick disk with mean velocities components
of about +1, -225, 0 km s$^{-1}$, and velocity dispersions of 49, 35, and 22 km
s$^{-1}$. We find that up to 500 pc height above/below the galactic plane,
Thick disk stars comprise about half the stars of the disk. Such high amount of
RGB stars with Thick disk kinematics points at the secular evolution scenario
origin for the Thick disk of the Milky Way galaxy.
