Fig. 3

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Distribution of distances and relative speeds of TWA members compared to the center of σ Cen. Top: normalized distribution of the distances of TWA stars to the reference sample σ Cen. All stars in our initial sample are included and the bandwidth of the kernel estimate is 6.5 pc (Scott’s rule). Bottom: 2D Distribution of the distances and relative speeds of TWA members to the center of σ Cen for the stars with precise radial velocities (TWA-6D-HQ sample). The black line indicates the linear fit, with a slope of 0.100 ± 0.015 km/s/pc.
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