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Fig. 1

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Observed visible spectrum of WR46 obtained after one hour exposure with the ESO/MPI 2.2 m telescope on La Silla equipped with the FEROS spectrograph. The observation took place on March 4, 2006. The outstanding emission lines are N v λ4518, He ii λ4542, N v λ4603, N v λ4620, and He ii λ4686. The narrow N v lines exhibit a smaller variation in RV compared to the two broad lines (i.e. the base of N v and He ii λ4686).

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