The wind and chromosphere of the Herbig AE star AB AUR as seen by IUE

Details The wind and chromosphere of the Herbig AE star AB AUR as seen by IUE The wind and chromosphere of the Herbig AE star AB AUR as seen by IUE

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.218..227c&link_type=abstract

In ESA Fourth European IUE Conf. p 227-231 (SEE N84-35135 24-88)

Physics

8

Chromosphere, Pre-Main Sequence Stars, Stellar Models, Stellar Spectra, Stellar Winds, Variable Stars, Doppler Effect, Iue, Line Spectra, Magnesium, Stellar Mass Ejection

Scientific paper

The Herbig Ae variable AB Aur (spectral type AO) MgII resonance lines (2796,2802 A) and CIV resonance line at 1548 A were studied. Results show the presence of a deep and extended chromosphere in the wind of AB Aur, where the temperature reaches 18,000 K. Constraints on the structure of the wind are derived. The mass loss rate is found to lie between 4 times 10 to the minus 11 and minus 7 billion M/yr. A pure thermal Doppler broadening is not sufficient to explain the profile of the MgII and CIV lines.

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