Gauss-Hermite coefficients binned according to their morphological type expressed in the continuous probability of belonging to early-type galaxies (0 ≤ pE+S0 ≤ 1): h3 (red open circles) and h4 (blue filled squares). The vertical dashed line (pE+S0 = 0.5) is the cut-off value dividing late-type (pE+S0 < 0.5) and early-type galaxies (pE+S0 ≥ 0.5). The plot is made using the empirical stellar template spectra.
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