Hertzsprung–Russell diagram of the dwarf and subgiant Ba (pink squares) and CH (blue triangles) stars for which orbital parameters were derived in this work. The three stars initially classified as giants are plotted with black circles. The objects are distributed in two HRDs to plot them with evolutionary tracks of the most appropriate metallicity: [Fe/H] = −0.50 (left) and [Fe/H] = −0.25 (right). The evolutionary tracks were computed with the STAREVOL code (Siess et al. 2000; Siess & Arnould 2008).