GC candidates overlaid to the g-band contour plot of NGC 253. Green five-pointed stars, blue squares, and red triangles show the candidates flagged as Best, Uncertain, and No in Table 3, respectively. The plotted contours show the μg = 23.6, 23.0, 22.4, 21.8, 21.2, 20.6 mag∕arcsec2 surface brightness levels, respectively.
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