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Fig. 6

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VFTS spectra of very rapidly rotating luminosity class V stars. VFTS 285 is the most rapidly rotating O star known (the exclamation mark is not part of the spectral type!). VFTS 406 is contaminated by a nearby emission-line spectrum on the detector, i.e., the apparent N iii and He ii emission features are spurious. Note that VFTS 724 is out of the ID sequence because of the oversubtracted nebular emission lines.

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