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Fig. 7.


Isochrones showing the theoretical masses inferred from the BT-Settl CIFIST evolutionary models for the binaries presented in this work. The primary and secondary components are depicted by the upper and lower solid lines for each respective source, and the shaded colored areas represent the uncertainty in the mass-estimates from the luminosities. The plot has a discontinuity in the age-range on the x-axis, showing only the ages of relevance for the objects included, and not featuring ages between 50 and 120 Myr. We note that alternative isochrone models may predict other masses for the same ages and luminosities, and our choice of models is based on consistency with the theoretical spectral models employed in our analysis.

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