Fig. 1.
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Spatial distribution of all point-like sources (gray dots) obtained from the reference mosaic J-band image covering a circular region of ∼4.25′ radius around the cluster center. The variable stars analyzed in this work are shown with larger symbols according to the legend. The circle represents 3rh, where rh = 0.57′ is the half-light radius of the cluster (Harris 2010).
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