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Table 1
Stellar parameters and iron abundance of CoRoT-2a determined from the analysis of Fe I and II lines, the Sousa et al. (2007) line-ratio technique, and SME line profile fitting.
| Stellar parameters | Teff [K] | log g (cgs) | ξt [km s-1] | [Fe/H] | N(Fe I, Fe II) | Source |
|
|
||||||
| Excitation/ionization balance | 5598 ± 34 | 4.47 ± 0.14 | 1.75 ± 0.04 | 0.04 ± 0.02 | 212,26 | this work (Sect. 2.3) |
| Excitation/ionization balance | 5608 ± 37 | 4.71 ± 0.20 | 1.49 ± 0.06 | 0.07 ± 0.04 | 26, 9 | Ammler-von Eiff et al. (2009) |
| Fe i and ii lines | 5625 ± 120 | 4.3 ± 0.2 | 0.0 ± 0.1 | Bouchy et al. (2008) | ||
| Line ratio calibration | 5513 ± 111 | this work (Sect. 2.4) | ||||
| SME global fit | 5475 ± 44 | 4.62 ± 0.06 | 1.52 | −0.06 ± 0.03 | this work (Sect. 2.5) | |
| Hαλ6563 |
|
this work (Sect. 2.5) | ||||
| Hαλ6563 | 5450 ± 120 | Bouchy et al. (2008) | ||||
| Ca i λ6122, λ6162, λ6439 | 4.49 ± 0.14 | this work (Sect. 2.5) | ||||
| Na D λ5890, λ5896 | 4.53 ± 0.18 | this work (Sect. 2.5) | ||||
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