Fig. 4
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(MK−J − K) colour-magnitude diagram for sub-stellar objects in BPMG (green-filled triangles). Sub-stellar object members of Sco-Cen (orange diamonds), young nearby associations with ages in the range of 40–50 Myr (blue-filled circles), and older ones (open blue diamonds) are also plotted. Blue circles mark objects that are companions of more massive objects.
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