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Table 3
Atmospheric parameters and obtained calcium NLTE and LTE abundances of the UMP stars.
| HE | Teff | log g | [Fe/H] | Vmic | Ref. | NLTE, log εCa | LTE, log εCa | |||
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| [K] | [km s-1] | Ca i 4226 Å | Ca ii | Ca i 4226 Å | Ca ii | |||||
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| 0107-5240 | 5100 | 2.2 | −5.3 | 2.2 | CGK04 | 1.28 | 1.38 | 0.94 | 1.41 | |
| 0557-4840 | 4900 | 2.2 | −4.75 | 1.8 | NCK07 | 1.94 | 2.20 (5, 0.05) | 1.78 | 2.55 (5, 0.37) | |
| 1327-2326 | 6180 | 3.7 | −5.45 | 1.7 | AFC06 | 1.16 | 1.18 (2, 0.02) | 0.91 | 1.33 (2, 0.06) | |
Notes. Ref.: AFC06 = Aoki et al. (2006), CGK04 = Christlieb et al. (2004), NCK07 = Norris et al. (2007). Numbers in parenthesis indicate the number of lines measured and σ.
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