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Fig. 6
Comparison of normalized HST observations of the prototypical O9.7 V star HD 36512 (ID: 13346, PI: Ayres, pink solid line) and of HD 54879 (blue solid line) in Doppler space. Shown are the resonance lines C iv λλ1548,1551 (left panel) and Si iv λλ1394,1403 (right panel).
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