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Fig. A.4.

image

Effect of metallicity on JKs[3.6][4.5] and HKs[3.6] color–color diagrams. Top panels: two SEDs of quiescent galaxies are shown. In particular, the magenta SED represents a population 1 Gyr old redshifted to z = 3 (i.e. zform ≈ 6) with Z = Z, while the green line shows the SED of a population of a 1 Gyr redshifted to z = 3 (i.e. again zform ≈ 6) with Z = 0.2 Z. Bottom: color–color plots with evolutionary tracks for star-forming and passive galaxies. Tracks representing star-forming galaxies are shown in blue and cyan, while their characteristics are shown in the inserted legends. Three tracks for quiescent galaxies are shown in magenta, dark-green and light-green for different metallicities (Z = Z, Z = 0.4 Z, Z = 0.2 Z respectively).

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