UV observations of the intermediate helium star CPD -46 3093.

Abstract

UV spectrograms of CPD-46 deg 3093 have been obtained with IUE in low resolution. No evidence for mass loss can be found at this resolution. A synthetic spectrum, calculated in LTE and including 800 atomic transitions matches the observations. Also the UV Si III/Si IV ionization equilibrium is reproduced as well as the Stromgren colors. The atmospheric parameters are T(eff) equals 26,000 K, log g equals 3.95 and n(He/n(H) equals 0.37 (by number) (Lange, 1977).