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Fig. 3.

image

Classification for the OTELO SP sample of 1834 galaxies through the u − r color and LDA algorithms. The u − r color vs. logarithm of the Sérsic index n plot shows the original morphological type classification in the OTELO catalog reduced to LT galaxies (black circles) and ET galaxies (red squares). The dotted blue line indicates the u − r color separation, and the dashed green line the LDA separation by the u − r color and the Sérsic index. The logarithmic scale for the Sérsic index makes the comparison with the concentration in Fig. 10 (which is already a logarithmic quantity) easier, but it bends the LDA line. The reader should take into account that this is not a flux limited sample.

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