  Barium stars are thought to result from binary evolution in systems wide
enough to allow the more massive component to reach the asymptotic giant branch
and eventually become a CO white dwarf. While Ba stars were initially known
only among giant or subgiant stars, some were subsequently discovered also on
the main sequence (and known as dwarf Ba stars). We provide here the orbital
parameters of three dwarf Ba stars, completing the sample of 27 orbits
published recently by Escorza et al. with these three southern targets. We show
that these new orbital parameters are consistent with those of other dwarf Ba
stars.
