3D CO5BOLD simulations show convective overshoot increases the fully mixed mass in DA white dwarfs by up to 2.5 orders of magnitude and shifts the convection onset temperature to 18000-18250 K.
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Model atmosphere fitting of 25,642 cool white dwarfs in DESI DR1 finds no photometric-spectroscopic mass discrepancy for DAs, magnetic DAs at all temperatures, increasing H/He ratios in He-atmosphere stars below ~10,000 K, and a rising He-atmosphere fraction due to convective mixing.
MESA grid models of Procyon A and B give a system age of 2.23 Gyr, white dwarf cooling age of 1.20 Gyr, and map the progenitor to the 1.9-2.6 solar mass range with higher core overshoot than standard.
Spectroscopic data confirm a 6200 K DA white dwarf of 0.63 solar mass with an M8 inner companion and possible M6+M9 outer binary, suggesting the system is quadruple.
citing papers explorer
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Convective Overshoot and Macroscopic Diffusion in Pure-Hydrogen Atmosphere White Dwarfs
3D CO5BOLD simulations show convective overshoot increases the fully mixed mass in DA white dwarfs by up to 2.5 orders of magnitude and shifts the convection onset temperature to 18000-18250 K.
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A Detailed Model Atmosphere Analysis of Cool White Dwarfs in DESI DR1
Model atmosphere fitting of 25,642 cool white dwarfs in DESI DR1 finds no photometric-spectroscopic mass discrepancy for DAs, magnetic DAs at all temperatures, increasing H/He ratios in He-atmosphere stars below ~10,000 K, and a rising He-atmosphere fraction due to convective mixing.
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Analysis of DQZ White Dwarf Evolution through Procyon
MESA grid models of Procyon A and B give a system age of 2.23 Gyr, white dwarf cooling age of 1.20 Gyr, and map the progenitor to the 1.9-2.6 solar mass range with higher core overshoot than standard.
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Spectroscopic Characterization of WD J000801.25-350450 and its Two Co-Moving Companions
Spectroscopic data confirm a 6200 K DA white dwarf of 0.63 solar mass with an M8 inner companion and possible M6+M9 outer binary, suggesting the system is quadruple.