Table 2
Stellar parameters adopted by previous abundance studies in the literature.
| α Cen A | α Cen B | |||||||
|---|---|---|---|---|---|---|---|---|
| Study | Teff | log g | ξ | [Fe/H] | Teff | logg | ξ | [Fe/H] |
| [K] | [cgs] | [km s−1] | [K] | [cgs] | [km s−1] | |||
| Reference values | 5795 ± 19 | 4.32 ± 0.02 | ... | ... | 5231 ± 21 | 4.53 ± 0.02 | ... | ... |
| Edvardsson (1988)a | 5750 | 4.42 ± 0.11 | 1.5 | 0.20 | 5250 | 4.65 ± 0.11 | 1.3 | 0.26 |
| Neuforge-Verheecke & Magain (1997) | 5830 ± 30 | 4.34 ± 0.05 | 1.09 ± 0.11 | 0.25 ± 0.02 | 5255 ± 50 | 4.51 ± 0.08 | 1.00 ± 0.08 | 0.24 ± 0.03 |
| Allende Prieto et al. (2004)b | 5519 ± 123 | 4.26 ± 0.10 | 1.04 | 0.12 ± 0.05 | 4970 ± 180 | 4.59 ± 0.04 | 0.81 | 0.27 ± 0.07 |
| Gilli et al. (2006)c | 5844 ± 42 | 4.30 ± 0.19 | 1.18 ± 0.05 | 0.28 ± 0.06 | 5199 ± 80 | 4.37 ± 0.27 | 1.05 ± 0.10 | 0.19 ± 0.09 |
| Porto de Mello et al. (2008) | 5847 ± 27 | 4.34 ± 0.12 | 1.46 ± 0.03 | 0.24 ± 0.03 | 5316 ± 28 | 4.44 ± 0.15 | 1.28 ± 0.12 | 0.25 ± 0.04 |
| Bruntt et al. (2010) | 5745 ± 80 | 4.31 ± 0.06 | 1.00 ± 0.07 | 0.22 ± 0.07 | 5145 ± 80 | 4.52 ± 0.04 | 0.83 ± 0.07 | 0.30 ± 0.07 |
| Jofré et al. (2015)d | 5792 ± 16 | 4.30 ± 0.01 | 1.20 ± 0.07 | 0.24 ± 0.08 | 5231 ± 20 | 4.53 ± 0.03 | 0.99 ± 0.31 | 0.22 ± 0.10 |
| Luck (2018)e | 5753 | 4.26 | 1.07 | 0.20 ± 0.04 | 5242 | 4.57 | 0.25 | 0.29 ± 0.05 |
| This studyf | 5829 ± 6 | 4.35 ± 0.02 | 1.26 ± 0.02 | 0.24 ± 0.01 | 5189 ± 18 | 4.30 ± 0.05 | 0.95 ± 0.04 | 0.22 ± 0.02 |
Notes. The reference Teff and log g values are obtained from interferometric and asteroseismic measurements, and are discussed in Sect. 4.2. (a) Teff and ξ values taken from England (1980) and Smith et al. (1986), respectively. (b) Teff and log g derived from photometric indices and isochrone fitting, respectively. ξ determined from calibrations. (c) All values taken from Santos et al. (2005). (d)Teff and log g values taken from Heiter et al. (2015). ξ and LTE [Fe/H] values taken from Jofré et al. (2014). (e)Teff and log g derived from photometric indices and isochrone fitting, respectively. (f)Mean values from differential, unconstrained analysis (see Table B.2).
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