Synthetic primary + secondary combined spectra of the Si iii triplet are stacked in order of increasing orbital phase (φ = 0 corresponds to periastron). The perturbed spectra are displayed with the dark tracing and the unperturbed spectra with dots. The “bumps” in the primary star’s perturbed profiles are evident as is the difficulty they introduce in properly locating the contribution of the secondary except at φ ~ 0.3 ± 0.05 and 0.8 ± 0.05 when the contribution from the secondary is clearly resolved.