The magnetically controled stellar wind of HD 21699.
Sonneborn, G.; Shore, S. N.; Brown, D. N.
United States
Abstract
The authors report the discovery of a magnetically controlled stellar mass outflow in the helium-weak sn star HD 21699 = HR 1063. IUE observations show that the C IV resonance doublet is variable on the rotational time scale of about 2.5 days, and that there are no other observable spectrum variations in the UV. The magnetic field reverses sign on the rotational time scale. An interpretation of the observations in terms of magnetically structured jets is presented.