Eccentricity-period diagram of dwarf and subgiant Ba stars (pink squares), including HD 22589, HD 120620, and HD 216219, initially called giants, and of dwarf and subgiant CH stars (blue triangles). The two orbits of the triple system HD 48565 are linked with a dashed line. Orbits of giant Ba are included as grey circles for comparison (Jorissen et al. 2019). Top and right panels: normalised histograms of logP and e, respectively.