NH₃ (1,1) integrated intensity and first moment maps, NH₃ (2,2) integrated intensity and kinetic temperature maps, N₂H⁺, HCO⁺, CH₃OH, SiO, N₂D⁺, and o-NH₂ D integrated intensity and first moment maps (from top left to bottom right). The white contours on the intensity maps and the black contours on the velocity maps mark N₂H⁺ intensity contours at 1 K km s⁻¹. The black crosses mark the compact sources from the GCC catalogue. The red crosses mark the brightest spots in SiO (northern) and CH₃OH (southern).