Period–eccentricity distribution of the BD samples from the three sources considered in this study: (1) Ma & Ge (2014) split into low-mass and high-mass samples, (2) Díaz et al. (2012), and (3) that from Raimbault (in prep.) but only for BDs with companions in the 10 − 80 M_J sin i range. In our simulations, a circularisation limit of 10 d is adopted, resulting in the eccentricity limit indicated by the black line. We limit (most of) our derived models to the interval between the shaded areas, namely 1 d < P< 5 yr.