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Fig. 2


YSO candidates classified using the IRAC fluxes in a [24] versus [8][24] diagram. The vertical dashed lines indicate the expected regions for the different evolutionary stages, based on the [8][24] colors, where Class I sources should have [8][24] > 3.2, Class II sources 1.6 [8][24] 3.2, Class III sources 0.5 [8][24] 1.6, and main-sequence stars should have [8][24] < 0.5.

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