Fig. 7
Best NLTE (continuous curve) fits of the Ca ii IR triplet lines in HE 0557-4840 (open circles). The obtained NLTE abundances are log εCa = 2.21, 2.13, and 2.15 for Ca ii 8498, 8542, and 8662 Å, respectively. The LTE profiles (dashed curve) were computed with 0.57 dex higher Ca abundance compared with the corresponding NLTE one. See text for more details.
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