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The spectroscopic binary γ 2 Velorum

Published online by Cambridge University Press:  14 August 2015

Virpi S. Niemelä  and
Jorge Sahade
Virpi S. Niemelä
Affiliation:
51 y 11, Villa Elisa, Buenos Aires, Argentina
Jorge Sahade
Affiliation:
Instituto de Astronomía y Física del Espacio, Buenos Aires, Argentina

Extract

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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.

Type
Session 5: Theory and Mass Loss Rates Binary Stars - Miscellaneous Topics
Information
Symposium - International Astronomical Union , Volume 83: Mass Loss and Evolution of O-Type Stars , 1979 , pp. 287 - 289
Copyright
Copyright © Reidel 1979 

References

Conti, P.S. and Smith, L.F. 1972, Ap.J., 172, 623.Google Scholar
Ganesh, K.S. and Bappu, M.K.V. 1967, Kodaikanal Obs. Bull., No. 183.Google Scholar
Kuhi, L.V. 1972, Ap.J., 180, 783.Google Scholar
Moffat, A.F.J. 1977, Astr. Ap., 57, 151.Google Scholar
Niemelä, V.S. 1975, in Physics of Movements in Stellar Atmospheres, Coll. No. 250 of C.N.R.S. of France, eds. Cayrel, R. and Steinberg, M., p. 467.Google Scholar
Seggewiss, W. 1975, in Variable Stars and Stellar Evolution, eds. Sherwood, V. and Plaut, L., (Dordrecht:Reidel), p. 285.Google Scholar