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Fig. 3

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Location of the observed objects (class III, class II, and objects with “non-classical” disks, as labeled) on the HR diagram. Evolutionary tracks and isochrones are taken from Baraffe et al. (1998). Stellar masses and ages are labeled. The horizontal bar refers to the error on the effective temperature, the vertical bar reflects the error of the bolometric correction of the ZAMS stars related to the error on the effective temperatures.

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