Fig. 10
Spectra of stars with narrow emission lines and Wolf-Rayet stars. The lower six spectra are Ofpe/WN9 stars with narrow emission lines (FWHM ~ 200 km s-1). Fluxes are normalised and an offset is added to the flux. The spectra are not shifted to rest wavelength. The narrow emission line in the 2.167 μm emission line of spectrum Id 1237 is a residual of poorly subtracted minispiral emission.
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