Contribution to the search for binaries among Am stars. VI. Orbital elements of ten new spectroscopic binaries, implications on tidal effects
Résumé
We present the results of a radial-velocity study of ten Am stars (HD 19342, 19910, 36360, 102925, 126031, 127263, 138406, 155714, 195692 and 199360) observed at Observatoire de Haute-Provence with the CORAVEL instrument. We find that these systems are spectroscopic binaries whose orbital elements are determined for the first time. Both omponents were measured for HD 126031, an eclipsing binary, whereas the other systems were detected as single-line binaries only. Physical parameters were inferred from this study for the primaries of all systems, and for the secondary of HD 126031. We observed a higher rate of synchronized/ circularized systems than expected from the theoretical models of radiative dissipation of dynamical tides.
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