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Table 2

Mean masses and ages of the TTSs in the Lupus association derived from the Siess et al. (2000) models.

Sample Stars Mean Median Mean Median
M / M M / M log t log t
(t in Myr) (t in Myr)

CTTS 30 0.54 ± 0.04 0.48 6.32 ± 0.24 6.28
WTTS (on-cloud) 33 0.69 ± 0.07 0.59 7.05 ± 0.67 6.55
WTTS (off-cloud) 29 1.09 ± 0.07 1.10 7.19 ± 0.28 7.11

WTTS (all stars) 62 0.88 ± 0.05 0.81 7.12 ± 0.48 6.87

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