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Fig. 3

image

Left panel: concentration index Cr vs. Dn(4000) index; right panel: absolute r-band magnitude, Mr, vs. ur color of the FR0CAT (blue), FRICAT (black), and sFRICAT (red) sources. The green histogram on the bottom shows the percentage of blue ETGs (scale on the right axis) from Schawinski et al. (2009). The dashed line separates the blue ETGs from the red sequence, following their definition. Colors as in Fig. 1.

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