Left: face-on view of the Halo02 model in Bullock & Johnston (2005). A dashed line represents R = 40 kpc radius centered on the halo model. Three ACS-like fields at R = 45, 55, and 65 kpc are marked by white squares. Top right: CMDs of inferred stars from the three ACS-like fields in the halo model. Stars are shifted to the M 101 distance. Shaded regions are the RGB selection bins used in this study. Bottom right: radial mass density profiles measured from the bright RGB stars in the selected fields. A solid line indicates the power-law fit with a slope of α_h = −3.0.