Decontaminated color–magnitude diagrams F555W vs. F435W−F555W and F555W vs. F555W−F814W of the stellar associations 2041, 4010, and 5009 that are located in different places of the galaxy. The blue circles represent the blue group of stars, the red inverted triangle indicate the red group, and the black dots are the stars that are neither blue nor red. The gray line indicates the isochrone corresponding to 107 yr and solar metallicity (Z = 0.019). The green line corresponds to 109 yr and Z = 0.008 (Marigo et al. 2008; Girardi et al. 2010). The arrow indicates the reddening vector.
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