Fig. 7

Several colour–colour diagrams obtained using Gaia and Johnson-Cousins passbands for the “normal” regime of pure-H (Teff > 5000 K; black open circles) and for pure-He (red squares) WDs. Green star symbols correspond to real WDs selected from Pancino et al. (2012). Grey dashed curves are the fitted polynomials from Table 6.
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