Integrated intensity and PV diagram of the F1 (blue color bar), F2 (red color bar), F3 (green color bar), and F4 (purple color bar) largescale structures of N₂H⁺ (1–0) into which the protocluster has been divided. Left: Spatial distribution of N₂H⁺ (1–0) emission. Markers and dashed lines are the same as in Fig. 11. The ellipse in the bottom left represents the beam size of the N₂H⁺ data. Right: PV diagram. We observe multiple large-scale V-shapes and straight shapes along the different filamentary structures, with some of them associated with dense cores in position and in velocity. The green arrows represent a velocity gradient of 10 km s⁻¹ pc⁻¹, which correspond to a timescale of ~0.1 Myr.