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Fig. 1

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H-R diagram of the ONC from Da Rio et al. (2012) with green stars showing the positions of the two targets of this study. The overplotted evolutionary tracks are from D’Antona & Mazzitelli (1994). We plot (from top to bottom) the 0.3, 1, 3, 10, 30, and 100 Myr isochrones.

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