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Fig. 4
HR diagram for the early-type star candidates (green circles) and red giants as a reference (red circles). Overplotted are theoretical isochrones for ages of (from left to right) 50 Myr, 100 Myr, 500 Myr, 1 Gyr, 5 Gyr, and 10 Gyr with solar metallicity using the Padova code (Girardi et al. 2000; Marigo et al. 2008).
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