Distributions of ΔRV_max for the BBC sample. Top panel: ΔRV_max derived from epochs used for period determination in BBC (∼25 per star). The different binary classifications from Villaseñor et al. (2021) are shown in the stacked histograms. SB1* systems were defined as those with less robust orbital periods, whereas those without orbital solutions are shown in white. Bottom panel: same as above but using only nine randomly selected epochs per star. For comparison, we include the distribution of BLOeM SB1 systems in the dashed red histogram. The dashed vertical lines at 20 and 16 km s⁻¹ highlight threshold values discussed in Sect. 3.2.