Left panel: stellar velocity map derived from pPXF best-fit models. Central panel: [O III] non-parametric peak velocity Vp estimate (an identical map is obtained for the Hα line). Right panel: difference between [O III] peak velocity (Vp) and stellar velocity (Vstar); the most significant discrepancy between the two kinematic tracers is found in regions A and B in the central panel. All velocities are derived taking the narrow-component velocity of the NW -integrated spectrum as a reference.
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