Ultraviolet observations of a Bp-star at high galactic latitude

Astronomy and Astrophysics – Astronomy

Scientific paper

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Hot Stars, Iue, Magnesium, Ultraviolet Astronomy, Absorption Spectra, Doppler Effect, Extraterrestrial Radiation, High Speed, Interstellar Matter, Radial Velocity, Stellar Atmospheres

Scientific paper

The high velocity metal-poor star HD 214 539 AOIB was analyzed for Mg II lines around 2800 A. It was possible to separate the interstellar components. According to predicted and observed correlation between the Mg II UV lines in supergiants as a function of spectral type of effective temperature, the predicted Mg II line intensity is at least 1 A. This suggests a great underabundance of Mg II in HD 214 539.

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