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Table 4

Errors on abundance determination.

[X/H] Δ([X/H])a Δ([X/H])b random error
(dex) (dex) (dex) (dex)

C 0.067 0.129 0.12
N 0.134 0.116 0.11
O –0.168 –0.028 0.06
Li 0.212 –0.023 0.05
Na 0.186 –0.069 0.10
Ba –0.189 –0.071 0.10
Sr 0.043 0.033 0.17

Notes. Columns 2 and 3: systematic errors;

(a)

comparison between abundances deduced from two different atmosphere models (Teff = 5206 K, log g = 2.4 and Teff = 5037 K, log g = 2.75) for HD 56438. For each element X, Δ([X/H]) = [X/H](5206K model) [X/H](5037Kmodel).

(b)

Comparison between abundances obtained with a C-deficient atmosphere model and a solar atmosphere model. For each element X, Δ([X/H]) = [X/H]C−deficient model [X/H]solarmodel.

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