Comparison of the material ejected by non-rotating source-star models with the chemical composition of four apparently single CEMP-s stars (Hansen et al. 2016). Different mass cuts M_cut are considered in the two panels: M_cut at the bottom of the He-shell (left panel), at the bottom of the C-shell (right panel). The models are labelled as follow: the first number is the initial mass in M_⊙, “s0” means no rotation and “B” means that the model was computed with a lower ¹⁷O(α,γ) rate. The four single CEMP-s stars are shown. HE 0206-1916: black circles, HE 1045+0226: red squares, HE 2330-0555: green triangles, CS 10301-015: blue diamonds.