NLTE spectral analysis of helium-rich sdO stars from the southern HK survey.
Drilling, J.S., Napiwotzki, R., Dreizler, S., Heber, U. and Beers, T.C.
(1996)
NLTE spectral analysis of helium-rich sdO stars from the southern HK survey.
In: UNSPECIFIED.
We have determined effective temperatures, surface gravities, and helium-to-hydrogen abundance ratios by fitting NLTE model atmospheres to high signal-to-noise- spectra of eight helium-rich sdO stars detected in the southern HK survey.
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