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Radial Velocity Studies of Close Binary Stars.V

S. M. Rucinski·W. Lu·S. W. Mochnacki·W. Ogloza G. Stachowski
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Abstract

Radial-velocity measurements and sine-curve fits to the orbital velocity variations are presented for the fifth set of ten close binary systems: V376 And, EL Aqr, EF Boo, DN Cam, FN Cam, V776 Cas, SX Crv, V351 Peg, EQ Tau, KZ Vir. All systems are double-lined spectroscopic contact binaries (KZ Vir may be a low inclination, close, non-contact binary), with seven (all except EL Aqr, SX Crv and EQ Tau) being the recent photometric discoveries of the Hipparcos satellite project. The most interesting object is SX Crv, a contact system with an unprecedently low mass ratio, q=0.066+/-0.003, whose existence challenges the current theory of tidal stability of contact systems. Several of the studied systems are prime candidates for combined light and radial-velocity synthesis solutions.

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S. M. Rucinski, W. Lu, S. W. Mochnacki, W. Ogloza G. Stachowski. 2001-06-08. Radial Velocity Studies of Close Binary Stars.V. https://doi.org/10.1086/323106

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