Radial velocity distributions of the young (blue) and old (red) stellar populations in Leo T. Filled histograms show the full samples, with five bins for the young population and ten bins for the old population. Outliers identified by their high χ² values (6 for the young stars and 3 for the old stars) are indicated by the step histograms with bold outlines. The mean velocities of the two populations differ by more than 1σ, consistent with the presence of two kinematically distinct groups.