Detecting hot stars in the Galactic centre with combined near- and mid-infrared photometry

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Fig. 2.

Left:A(K_S) histograms for the combined NIR-MIR sources that met the photometric quality criteria and the foreground cut: (Hv[4.5 μ]) (blue) and (K_S − [3.6 μ]) (red). Right: corresponding distributions of the uncertainties for the same stars and colours. The considerably higher uncertainties of (K_S − [3.6 μ]) are noted.

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