PMs measured at (l,b) = (0, −6) field. RGB bulge stars and disk dwarfs are shown with orange and green colors respectively. Dotted and dashed circles in μlcos (b) vs. μb plot show the 3σ data selection used for disk and bulge stars, respectively. The PM distribution derived from this selection shows a systematic difference between disk and bulge population, in agreement with Clarkson et al. (2008).
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