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Table 1.
Non-seismic observational parameters for α Cen AB.
| Fundamental parameter | Reference | |
|---|---|---|
| Fractional mass (κ) | MB/(MA + MB) = 0.4617 ± 0.0004 | P16 |
| MB/(MA + MB) = 0.45884 ± 0.00027 | K16 | |
| Individual masses | MA = 1.133 ± 0.005 MB = 0.972 ± 0.005 | P16 |
| MA = 1.1055 ± 0.0039 MB = 0.9373 ± 0.0033 | K16 | |
| Radius ratio (Γ) | RA/RB = 1.4172 ± 0.0016 | Kervella et al. (2017b) |
| Individual radii | RA = 1.2234 ± 0.0053 RB = 0.8632 ± 0.0037 | Kervella et al. (2017b) |
| Effective temperature | Teff, A = 5795 ± 19 K Teff, B = 5231 ± 21 K | Kervella et al. (2017b) |
| Luminosity | LA = 1.521 ± 0.015 LB = 0.503 ± 0.007 | Kervella et al. (2017b) |
| Metallicity | [Fe/H]A = 0.25 ± 0.02 [Fe/H]B = 0.24 ± 0.03 | Neuforge-Verheecke & Magain (1997) |
| [Fe/H]A = 0.24 ± 0.03 [Fe/H]B = 0.25 ± 0.04 | Porto de Mello et al. (2008) | |
| [Fe/H]A = 0.16 ± 0.05 [Fe/H]B = − | Bigot et al. (2008) | |
| [Fe/H]A = 0.24 ± 0.01 [Fe/H]B = 0.22 ± 0.02 | Morel (2018) | |
Notes. Masses, radii, and luminosities are expressed in corresponding solar units.
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