Top panel: V component of the velocity as a function of age for thick and thin disks population stars, as defined in Fig. 6. Middle panel: V component of the velocity as a function of age for thick disk sequence stars. Bottom panel: V component of the velocity as a function of age for thin disk sequence stars. In all panels, the color and the size of the symbols are a function of the star’s [Fe/H] value as indicated by the color bar in each plot. Solid lines represent the best fit linear regression to the data. For the thick disk sequence, only stars in prograde orbits (V > −220 km s-1) have been included in the fit. For thin disk sequence stars, the two points with V < −200 km s-1 have not been included when evaluating the best fit linear regression of the data.
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