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A Study of the Orbital and Intrinsic Variability of the Double-Lined Spectroscopic Binary β Centauri

  • M. Ausseloos (a1), C. Aerts (a1) and K. Uytterhoeven (a1)

Abstract

We introduce our observational study of the orbital motion of β Cen. Using 463 high signal-to-noise, high-resolution spectra obtained over a timespan of 12 years it is shown that the radial velocity of β Cen varies with an orbital period of 357.0 days. We derive for the first time the orbital parameters of β Cen and find a very eccentric orbit (e = 0.81) and similar component masses with a mass ratio M 1/M 2 = 1.02. Both the primary and the secondary exhibit periodic line-profile variations.

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Copyright

References

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Breger, M. 1967, MNRAS, 136, 51
Léhmann-Filhés, R. 1894, Astr. Nach., 136, 17
Robertson, J.G., Bedding, T.R., Aerts, C., et al. 1999, MNRAS, 302, 245

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