Integrated intensity and PV diagrams of the DCN (3–2) emission. Top left: spatial distribution of DCN emission in G351.77. The green, black, and red × markers indicate the position of the dense cores (Louvet et al. 2024), where green and black represent the Cunningham et al. (2023) DCN spectral classification: single, and complex, respectively, and red indicates hot cores (also complex Bonfand et al. 2024). The blue stars indicate the position of the cataloged SiO outflows in G351.77, which are not associated with observed PV-features neither to range of velocities of DCN (Towner et al. 2024). The intersection of the dashed black curves represent the center of the rotating modeled sphere (see Appendix F). Top right and bottom left: PV diagrams along the two perpendicular directions. The magenta contours represent the PV features produced by a rotating modeled sphere in the PV diagram.