Cores showing the “infall” signature in Cha I (corresponding to Fig. 4) are plotted as red filled circles, the cores showing the opposite signature as green triangles, and the cores showing both signatures as blue squares. The contours correspond to the 870 μm dust continuum emission obtained with LABOCA (Belloche et al. 2011a) with contour levels of a, 2a, 4a, 8a, 16a, 32a, and a = 48 mJy/21′′-beam (4σ).