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Table 2

Summary of Lada classes in L1630 N and estimated lifetime for each phase.

Lada class No. of YSO candidates Lifetime

I 25 (13%) 0.40
Flat 30 (16%) 0.48
II 126 (68%) 2
III 5 (3%)



Assumed lifetime for the Class II phase (Evans et al. 2009).

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