Log-log plot of total velocity difference Δv (km s⁻¹) versus projected separation (au) for the wide companion candidates analyzed in this work, in addition to the genuine wide companions GQ Lup and GQ Lup C. Δv_max (km s⁻¹) (orange line) indicates the maximum total velocity difference that bound binaries with a total mass equal to 10 M_⊙ in circular orbits can possess (Andrews et al. 2017). Each point is marked as one of the wide companion candidates involved. For the detailed information (see Tables 12 and 13).