Fig. 3.

Initial period distributions adopted in our models. The vertical axis represents the binary fraction in each period bin, i.e. flog P. The solid black line represents our default initial distribution of separations, which is flat in log10 ai between 5 R⊙ and 5 × 106 R⊙, with flog P = 0.11 over this interval. The dashed brown line shows the prescription of Moe & Di Stefano (2017), adopted in set M13, for a 1.0 M⊙ primary and mass ratio M2,i/M1,i > 0.1. The shape and maximum of the distribution of Moe & Di Stefano (2017) depend on the primary mass and mass ratio. The dotted green line shows a period distribution flat in log10 Pi and with flog P = 0.15 in the period range [10, 2 × 104] days, which we adopt in our model set M14. The integral of each curve represents the total binary fraction over the period interval.
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