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Fig. A.5.

image

Comparison of the disentangled and best-fit model spectra of the primary star with error ranges, along with a model spectrum having the Brott et al. (2011) CNO baseline abundances. From left to right, the lines C IIIλ 5696, C IVλ 5801, N Vλλ 4604, 4620, and O III 5592 are shown, and the legend stipulates the respective CNO abundance values [X/H] + 12 and the baseline values εX. As these lines are the main abundance diagnostic for their respective CNO element, from the third panel it can be seen that there is evidence for significant nitrogen enrichment.

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