Abstract
γ2 Velorum is the brightest binary system with a Wolf-Rayet component; it has been classified as a 09I+WC8 pair (Conti and Smith 1972). The orbital elements of this system were determined earlier by Ganesh and Bappu (1967) from spectrograms of 125 Å/mm dispersion, on the basis of the radial velocities from CIII-IV λ4652 Å emission for the WC component, andon the radial velocities from H absorption only, for the O star.
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