Colour magnitude diagrams of all the stars meeting the selection criteria. Stars with VFTS spectral classification (top), stars with non-VFTS spectral classification (middle) and stars with no spectral classification (bottom). Key for classified stars: W-R stars (red squares), Of/WN stars (cyan triangles), O-type stars (yellow circles), B-type stars (blue diamonds) and stars later than B-type (crosses).
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