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

Published online by Cambridge University Press:  12 April 2016

M. Ausseloos ,
C. Aerts  and
K. Uytterhoeven
M. Ausseloos
Affiliation:
Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium
C. Aerts
Affiliation:
Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium
K. Uytterhoeven
Affiliation:
Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium

Abstract

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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 M1/M2 = 1.02. Both the primary and the secondary exhibit periodic line-profile variations.

Type
Part 1.2. Pulsations in Close Binaries
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 86 - 87
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

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