Oxygen VI in stellar winds

The region of the O VI resonance doublet around 1030 A has been observed in nine stars with the high resolution (0.051 A FWHM) detector on the Copernicus satellite spectrometer. Although the spectra are confused with interstellar Lyman β and H2 absorption, P Cygni profiles or shifted absorption lines indicating mass flow were found in seven of the stars. The O VI profiles display a considerable variety that is not correlated with spectral type. The detailed results are given and discussed. (U.K.)