From left to right: continuum-subtracted zeroth-, first-, and second-moment map of CS 3-2 (top), H₂S 1₁₀—1₀₁ (middle), and H₂CO 5₆—4₅ (bottom) observed with NOEMA. Before the moment calculation, a four-sigma clipping mask was applied to the data cubes. The cubes were smoothed by a factor of three before computing the moment maps. Only channels in the range 3 to 11 km s⁻¹ and with a S/N larger than four have been used.