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Double-lined spectroscopic binaries (SB2s) are one of the main sources ofstellar masses, as additional observations are only needed to give theinclinations of the orbital planes in order to obtain the individual masses ofthe components. For this reason, we are observing a selection of SB2s using theSOPHIE spectrograph at the Haute-Provence observatory in order to preciselydetermine their orbital elements. Our objective is to finally obtain masseswith an accuracy of the order of one percent by combining our radial velocity(RV) measurements and the astrometric measurements that will come from the Gaiasatellite. We present here the RVs and the re-determined orbits of 10 SB2s. Inorder to verify the masses we will derive from Gaia, we obtainedinterferometric measurements of the ESO VLTI for one of these SB2s. Adding theinterferometric or speckle measurements already published by us or by othersfor 4 other stars, we finally obtain the masses of the components of 5 binarystars, with masses ranging from 0.51 to 2.2 solar masses, includingmain-sequence dwarfs and some more evolved stars whose location in the HRdiagram has been estimated.

Masses of the components of SB2 binaries observed with Gaia. V. Accurate SB2 orbits for 10 binaries and masses of the components of 5 binaries