Left: dereddened CMD for the westernmost pointing probing the leading arm in the southern hemisphere; the template main sequence function and the turnoff point (green) are plotted for the maximum of the primary cross-correlation. Right: weighted-density diagram resulting from the primary cross- correlation. The maximum (white bin, black cross) marks the top left corner of the template-MS at the position of the southern-leading arm main sequence, whereas the red overdensity at fainter magnitudes corresponds to the southern-trailing arm.
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