Distribution of dust temperatures (colors) and H₂ column densities (contours) in ρ Oph-A (Santos et al. 2019). Contour levels of $N_{{\mathrm{H}}_2}$ are shown at (1, 2, 4, 6, 8, and 10) × 10²² cm⁻². The star symbol shows the position of Oph-S1. Small circles show the positions of YSOs (Enoch et al. 2009; Evans et al. 2009; Connelley & Greene 2010). Yellow squares and cyan diamonds indicate the positions of prestellar and protostellar cores, respectively, identified as part of the Herschel Gould Belt Survey (Ladjelate et al. 2020). The “×” symbol shows the position of the SM1 core.