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Fig. 4
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NIST-simulated intensities of the Fe I lines at 4375, 5110 and 5166 Å relative to the Fe I λ4216. The simulations were calculated at temperatures between 3000 and 4000 K, at intervals of 250 K. The χ2 test showed that the best fitting temperature was 3500 K (green points). The black points indicate the observed line ratios.
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