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Fig. 2
EXors in the HR diagram. All curves and symbols have the same meaning as in Fig. 1, but the pre-main-sequence evolutionary tracks of Tognelli et al. (2011) are shown instead. From right to left, the corresponding stellar masses, in solar units are: 0.20, 0.40, 0.60, 0.80, 1.0, 1.2, 1.5, 2.0, 2.6, 3.0 and 3.6.
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