Fig. 3.

Dn(4000) index vs. stellar mass log M* for galaxies in the CB supercluster. Blue stars denote BSF galaxies, orange stars denote RSF galaxies, green triangles mark RQ galaxies, black dots show red galaxies with 1.55 ≤ Dn(4000) < 1.75, and red filled circles denote VO galaxies (see Table 3). The green ellipse approximately borders the area populated by RQ galaxies, and the orange ellipse shows the area populated by RSF galaxies.
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