A Study of the Orbital and Intrinsic Variability of the Double-Lined Spectroscopic Binary β Centauri
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 parame...
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| Veröffentlicht in: | International Astronomical Union Colloquium 2002, Vol.185, p.86-87 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | 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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| ISSN: | 0252-9211 |
| DOI: | 10.1017/S025292110001561X |