Coherent cores and shells-1 and -2, as defined in Sect. 4.4, are shown on the kinetic temperaturemap, with blue, red and green contours, respectively. The white stars show the positions of Class 0/I and flat-spectrum protostars in the cloud. The white dashed contour shows a rough boundary for Oph-B1 and Oph-B2 (see Sect. 4.4). The white dotted line roughly separates the dark cloud to the left from the molecular material affected by the external illumination to the right.