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Fig. 1
Synthetic spectrum fits to the Sr II 407.7 nm (upper panel) and Ba II 455.4 nm lines (lower panel). The observations of HE 2141−1441 (relatively metal rich, s-element poor) and HE 0448−4806 (relatively metal poor, s-element rich) are shown as black plus signs.
This figure is made of several images, please see below:
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