Extended Data Fig. 5: WD cooling time for models with and without hydrogen burning.
From: Slowly cooling white dwarfs in M13 from stable hydrogen burning
Comparison between the cooling times of a low metallicity, 0.54 M⊙ WD with and without hydrogen-burning16 (solid and dashed lines, respectively). The red segment marks the difference in the cooling time at the luminosity of the faintest WD considered in this study, log(L/L⊙) = – 1.7 and reports the absolute difference between the two cooling time values (60 Myr), corresponding to a 75% increase if hydrogen-burning is active, with respect to the ‘standard’ (no-burning) case.
