Comparison of an optimized LOSVD model parameterized by a Gauss–Hermite series (left) and a nonparametric description (right) for the same Voronoi Bin of VCC 200 (S/N = 26). Both are broadly consistent with one another. In the case of this specific Voronoi Bin, the Gauss–Hermite representation is slightly preferred by AIC _p . The error suppression by a Gauss–Hermite parameterization at high velocities is substantial, which is why we readjusted the errors as described in Section 2.2.