Fig. 3
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Fraction of He-dominated white dwarfs (ƒHe) as a function of effective temperature (Teff). The solid red line represents the result from López-Sanjuan et al. (2022a) and corresponds to the prior used in Sect. 3.2. Measurements from Torres et al. (2023), using Gaia BP/RP spectra (hexagons), and from Kilic et al. (2025), using the 100 pc spectroscopic sample (squares), are also shown.
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