Fig. 4
J − H vs. i − J colour–colour diagram. The solid circle corresponds to LSR J0745+2627, and solid triangles to cool white dwarfs from Kilic et al. (2010b) and Kilic et al. (2012). Black lines correspond to values with equal log g and blue lines with equal Teff for pure-H composition (Sect. 3). Black points and asterisks represent the same as in Fig. 2.
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