IUE spectra of three A0 V stars rotating close to their break-up velocity: HD 119921, HD 129685, HD 181296

Details IUE spectra of three A0 V stars rotating close to their break-up velocity: HD 119921, HD 129685, HD 181296 IUE spectra of three A0 V stars rotating close to their break-up velocity: HD 119921, HD 129685, HD 181296

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.218..223m&link_type=abstract

In ESA Fourth European IUE Conf. p 223-225 (SEE N84-35135 24-88)

Other

2

A Stars, Atmospheric Ionization, Stellar Atmospheres, Stellar Rotation, Velocity Measurement, Iue, Main Sequence Stars, Stellar Evolution, Stellar Spectra, Ultraviolet Spectra

Scientific paper

The IUE spectra of the three A0 V stars with the highest rotational velocity reported in the literature are analyzed. Superionization lines are surely present only in the spectrum of HD 119921 (Z Cen) and they are found to be variable. Using a visible spectrum, a new value of the rotational velocity of 220 km/sec is given for Z Cen; it is considerably far from its break-up velocity. No clear evidence of superionization is found in the other two stars.

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