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Fig. 3
Observed spectrum (solid black) in the range of the 401.9 nm Th II line, compared with the best fit (solid red) providing A(Th) = 0.12, and two synthetic spectra at A(Th) of − 0.3 and 0.5 (dashed blue). The Th II line is blended with a 13CH line, which is taken into account.
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