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Fig. 3


Stellar ages estimated with CIGALE. Upper panel: ages of the (oldest) stellar population for free-age models as a function of redshift. Black triangles: two-populations model, green circles: decl.-τ model, magenta crosses: rising-τ model. The red steps correspond to the age adopted for the models with fixed ages. Lower panel: mass weighted ages for all the models: same symbols as in the upper panel are used for the free-age models, blue squares and red diamonds are added for the fixed-age rising-τ model and two-populations models, respectively. The curves correspond to the age at redshift z for a redshift formation zf = 8 (thick line), zf = 5 (thin line), and zf = 2.5 (dotted line).

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