Table 3: YSO evolutionary stages as defined by Robitaille et al. (2006).
Stage Components $M_{\rm disk}/M_\star$ $\dot{M}_{\rm env}/ M_\star$

I accreting envelope any > $10^{-6} \ {\rm yr}^{-1}$

II disk, remains of envelope >10^-6 < $10^{-6} \ {\rm yr}^{-1}$

III optically thin disk <10^-6 < $10^{-6} \ {\rm yr}^{-1}$

**Table 3:** YSO evolutionary stages as defined by Robitaille et al. (2006).
Stage	Components	$M_{\rm disk}/M_\star$	$\dot{M}_{\rm env}/ M_\star$
I	accreting envelope	any	> $10^{-6} \ {\rm yr}^{-1}$
II	disk, remains of envelope	>10^-6	< $10^{-6} \ {\rm yr}^{-1}$
III	optically thin disk	<10^-6	< $10^{-6} \ {\rm yr}^{-1}$

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