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Fig. 1.

image

Average mass-weighted age and time since quenching (gray and dotted regions, respectively) of QGs with log(M/M) = 10.5 − 11.5 predicted by the QG formation rate, compared to various field samples of ∼1011 M QGs. Black-rimmed symbols indicate luminosity-weighted ages, while un-rimmed ones show mass-weighted ages. The dark blue and cream rectangles show the age spread predicted from the empirical age − M relations of Thomas et al. (2005) and Zanella et al. (2016), respectively.

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