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Fig. 4

image

Rest-frame UVJ colors for photometric and spectroscopic cluster members (red dots), shown with the color distribution for UltraVISTA field galaxies of the same stellar mass and photometric redshift as the clusters (gray scale in units of arbitrarily normalized UltraVISTA galaxy counts). Solar-metallicity Bruzual & Charlot (2003) complex stellar population evolutionary tracks are displayed with variable age steps (15 000 yr to 0.25 Gyr) out to 4.5 Gyr (which corresponds to the age of Universe at z = 1.37). The red model represents a single burst and the blue, green, and black models represent exponentially declining star formation with increasing levels of internal reddening.

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