Fig. 5
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Posterior distributions of the fluorine abundance relative to hydrogen [F/H] (top) and carbon abundance relative to hydrogen [C/H], used as a measure of metallicity (bottom) for J0835, J0501, and J0500. J1200, TWA28, and J0856 are the young BDs observed and analysed by González Picos et al. (2024), DENIS by de Regt et al. (2024), and 2M0355 by Zhang et al. (2022). log10 [F/H]⊙ = −7.6 ± 0.25 (Asplund et al. 2021) and log10 [C/H]⊙ = −3.54 ± 0.04 (Asplund et al. 2021).
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