Fig. 6
Fits to a small part of the UVES spectra (dotted, thick black curves). The thin, solid curves (blue in the on-line edition) show the synthetic spectra for the overall best-fitting Fe abundances, while the thin dashed curves (red in the on-line edition) show the effect of of varying the Fe abundance by ± 0.3 dex. The spectra have been smoothed with a 5 pixels wide boxcar filter.
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