The Bayes factor (BF_{piecewise, single pop.}) comparing the piecewise and single population models. The evidence for the piecewise is evaluated as a function of semimajor axis cutoff (a_cutoff), where vertical dotted lines represent the semimajor axis of each stellar binary. Horizontal dashed lines represent the Bayes factor interpretation by H. Jeffreys (1939). A Bayes factor greater than 1 favors the piecewise model and vice versa. The region with the highest evidence supporting the piecewise model is ∼31–38 au (strong evidence with Bayes factor of 12).