Fig. 3
Artificial star tests for the case of NGC 4650A. The same analysis is performed for NGC 3808. Top panel: color−magnitude diagram of input (gray dots) and recovered (dark blue solid dots) artificial stars. Bottom panel: artificial stars’s sharpness value against their F450W-band magnitude. Red solid curve indicates the exponential cuts used for selecting unresolved objects (see Sect. 2.7).
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