bsens continuum map at 1.3 mm with coloured contours of moment 0 of ¹²CO (2–1) in red and blue (panels a and c) and SiO(5–4) in magenta and cyan (panels b and d). For all four panels, the synthesised beams are presented in the upper left corners and a 0.1 pc scale-bar is shown. Blue (cyan) and red (magenta) correspond to integration between, respectively, [12; 32] km s⁻¹ and [42; 62] km s⁻¹ for the two molecules of study. Panels a and c: with 1σ = 0.7 Jy beam⁻¹ km s⁻¹, blue and red contour levels are 4, 6, 8, 10, 12, and 14σ. Panels b and d: 1σ = 0.03 Jy beam⁻¹ km s⁻¹ and the corresponding cyan and magenta contours are 3, 7, 10, 13, 15, and 17σ. In coloured markers, the getsf cores are shown with ellipses: hot core candidates in red (see Sect. 5.1), cores associated with outflows in yellow, free-free contaminated and uncertain ones in green, and prestellar ones in black following scenario A (see text, Sect. 5.2).