Rotational modulation of the wind of the PMS star AB Aur: New observations in C IV and MG II

Details Rotational modulation of the wind of the PMS star AB Aur: New observations in C IV and MG II Rotational modulation of the wind of the PMS star AB Aur: New observations in C IV and MG II

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.263..125c&link_type=abstract

In ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE p 125-12

Astronomy and Astrophysics

Astrophysics

1

Stellar Models, Stellar Rotation, Stellar Winds, Variable Stars, Carbon, Magnesium, Periodic Variations

Scientific paper

Star AB Aur was observed in a monitoring program devoted to short term spectral variability in Herbig premain sequence stars. On a one day time scale, the variability of the Mg II 2795 A line blue edge velocity is confirmed, and that of the C IV 1548 line blue edge velocity established. Since observations cover only 6 days and since the phase coverage is not tight enough, the new data can only support the periodic variability of Vs found in previous work. Periods between 40 and 50 hr are possible. Scenarios for the wind model of AB Aur are discussed.

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