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Fig. 2
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S I 15475.624 and 15478.496 Å lines in stars b11 2M17351981-1948329 and c2 2M17285088-2855427. Observed spectra (black) are compared with synthetic spectra computed with [S/Fe] = 0.0 (green), 1.0 (blue), and final values (red). Dotted lines correspond to molecular lines only.
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