Radial Velocity Studies of Southern Close Binary Stars.I

Abstract

Radial-velocity measurements and sine-curve fits to the orbital velocity variations are presented for nine contact binaries, V1464 Aql, V759 Cen, DE Oct, MW Pav, BQ Phe, EL Aqr, SX Crv, VZ Lib, GR Vir; for the first five among these, our observations are the first available radial velocity data. Among three remaining radial velocity variables, CE Hyi is a known visual binary, while CL Cet and V1084 Sco are suspected to be multiple systems where the contact binary is spectrally dominated by its companion (which itself is a binary in V1084 Sco). Five additional variables, V872 Ara, BD Cap, HIP 69300, BX Ind, V388 Pav, are of unknown type, but most are pulsating stars; we give their mean radial velocities and Vsini.

to appear in AJ October 2006; 3 figures

References in corpus (1)

• Contact Binaries with Additional Components.I. The Extant Data

Cited by in corpus (7)

• Photometric study and absolute parameters estimation of six totally eclipsing contact binaries
• Physical parameters and multiplicity of five southern close eclipsing binaries
• Radial Velocity Studies of Southern Close Binary Stars.II
• ASAS Eclipsing Binaries with Observed High Period Change Rates
• Orbital Solutions and Absolute Elements of the W UMa Binary MW Pavonis
• The multiple nature of CC Com: one of the ultra-short orbital period late-type contact binary systems
• Modern Analysis Techniques for Spectroscopic Binaries