Fig. 3.
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Comparison between J − K colours derived from our spectra with those derived from VISTA photometry. The solid line represents a perfect correlation. The dashed and dotted lines represent a deviation of 0.1 and 0.2 magnitudes from a perfect correlation, respectively. The anomalous/intermediate-age GC HGHH-G279 is not included in this plot because we were unable to derive its K-band photometry from its DECam data.
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