Distribution of the Ṁ_acc–Ṁ_disk in σ-Orionis. The triangles indicate the upper limit on M_disk while the vertical arrows correspond to the upper limits on the Ṁ_acc. The dotted and dashed lines are the isochrones at some relevant ages. The ones in bold are related to the estimated age of the cluster, i.e., 3–5 Myr (Oliveira et al. 2004). Values for other star-forming regions (Manara et al. 2023) are shown as gray symbols for comparison.