Continuum-subtracted integrated spectra of the three regions of interest in the vicinity of the Paα, [Fe II] 1.644 μm, and H₂ 2.12 μm. The original spectra (in black) are reported in velocity space. The best-fit emission line profiles are shown in orange, and the individual Gaussian profiles used to reproduce the line shapes are reported in blue and green. Broad and asymmetric profiles are found in the nuclear spectra. The vertical lines mark the zero-velocity as inferred from the narrow component of the H I lines. The NIRSpec spectral resolution at the wavelengths of interest is σ ≈ 60 km s⁻¹.