Observations (points) and best-fit PSF-convolved models (blue lines) for rotation velocity and total velocity dispersion profiles along the kinematic major axis. Each point was extracted from the spectrum in an aperture whose diameter is equal to the angular resolution 0.31″ and the red one restricted to the spaxels with a S/N >  3 in the aperture. Orange and gray lines mark the intrinsic velocity dispersion σ₀ and 1σ confidence from the GalPAK^3D. The 3.5″ × 3.5″ HST/F160W images are shown in the bottom-right corner with the red crosses denote the corresponding source. Since SB2 and MS2 are close to each other with mixed fluxes, the points at the lowest radius of SB2 and the highest radius of MS2 are not fitted well with models. For MS1, the points at the lowest radius are not fitted well with models because of two neighboring sources at similar redshifts. The σ₀ derived from GalPAK^3D is lower than the lowest observed velocity dispersion profile because the latter one is still affected by the beam-smearing effect even at the large radii probed by our observations.