Fig. 3.
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Estimated wind braking torque relative to HD 76151 as a function of Rossby number normalized to the solar value. Points are grouped by spectral type, as indicated in the legend. The gray shaded area represents an empirical constraint on the critical Rossby number for the onset of WMB (Rocrit/Ro⊙ = 0.92 ± 0.01; Metcalfe et al. 2024b). The solar wind braking torque was taken from Finley et al. (2018).
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