Top: distribution of orbital periods for the 96 binary members of the Hyades cluster with P ≤ 10⁴ days. The optimal number of bins was determined following the Freedman–Diaconis rule. Error bars on the corrected distribution are from counting statistics, and the dashed line is the log-normal distribution for solar-type binaries in the field, from the work of D. Raghavan et al. (2010). Bottom: cumulative distribution function of observed periods, compared against the same field distribution as above (dashed line; see the text).