A Detailed Far-UV Spectral Atlas of O Main Sequence Stars ("FUVOSTARS")

The Far-UV Spectral Atlas of O Stars (Smith 2012) contains high resolution data in the far-UV wavelength region (defined here as the range 930-1188 Angstroms) for 25 O stars in the Galaxy and Magellanic clouds between spectral types O2 and O9.5, obtained from the MAST FUSE data archives. The star list consists of three parallel spectral type sequences, Galactic main sequence (luminosity classes III-I), Galactic supergiants, and low metallicity stars in the Small or Large Magellanic clouds. FITS data files of 25 stars are provided, comprised of merged spectra in each of the two FUSE detector sides, each representing the spectrum sampled in the original wavelength sampling (0.075 Angstroms). Of these stars, six spectral templates were chosen for detailed study. The identified lines are all the photospheric and Interstellar Medium atomic and molecular features in the far-UV spectrum. These lists were compiled from line synthesis of model atmospheres appropriate to the stars' spectral types from a theoretical and empirical set of line libraries. The atlas spectra are enhanced with respect to the data in the MAST archives, first, in that wavelength irregularities for the FUSE Side 1 and Side 2 spectra have been removed to the extent possible and corrections made for the stars' radial velocities. The spectra were then resampled to restore the wavelength zeropoints and increments of the original spectra. Second, the depressed fluxes in the FUSE 1B LiF detector segment due to the primary 'worm' have been corrected by means of the quasi-continuum fluxes in the 2A LiF segment.