Fig. 12

Color-magnitude diagrams showing the color evolution as observed by the LCOGT (left) and the Beacon Observatory (right). For the Kent data, since the different filters are not cross-calibrated, the colors are shifted around the median value and only the relative color variation is relevant. A reddening vector (Cardelli et al. 1989; Stoughton et al. 2002) is shown for comparison.
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