Top row: current position of all selected stars with radial-velocity measurements (σrv < 2 km s−1) in the Galactocentric Coordinate frame. Bottom row: positions of these sources at t = 13 Myr. The ellipses represent the errors of orbit integration (3-σ). The large errors in the direction of Z correspond to the large errors in radial velocities and are responsible for the disappearance of the flatness of the structure parallel to the Galactic plane.
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