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Fig. 1
Chemical profile of the white dwarf at the beginning of the cooling process (red) and the the end of crystallization (green). The three abundances shown for each model belong (from top to bottom at M = 0) to: 16O, 12C, and 22Ne. The mass fraction of 12C in the outermost layer is 0.61 (red line) and 0.86 (green line).
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