Fig. 20
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Best fit isochrone per subgroup (black line) with the zero-age main sequence (ZAMS, dashed gray line) for reference. Only US and LS are significantly younger than the on average 17.5 Myr old population of Sco OB2. We note the in total four white dwarfs in the bottom left corner in the CMD of the Halo population and UCL-2; these are most likely interlopers.
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