Probability densities for the asphericities of 16 Cyg A (upper panel) and 16 Cyg B (lower panel). The red line shows the density resulting from a purely centrifugal force computed from a1. The black line shows the measured effective asphericity ΔR/R|eff. The probability that the star is oblate (ΔR/R > 0) is given. The shaded areas mark the 68.3% credible intervals of the corresponding distributions.
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