Colour-magnitude diagram (left), proper motions (middle), and the positions on the sky (right) for all the sources featuring in our initial catalogue, located within 45′ from the star HD 46150 (small grey dots). Candidates with membership probability > 70% from Cantat-Gaudin & Anders (2020) are shown as black dots, and those that pass also our selection (F1, membership probability > 80%) as orange open circles. We estimate that there may be as much as 35% of contaminants in the selection sample of Cantat-Gaudin & Anders (2020).