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

Spectroscopic orbits of three dwarf barium stars