Abstract
Variability is a fundamental property of O-star winds. One of the major breakthroughs in this field of research has been the recognition that wind variability is cyclical in nature. This suggests that stellar rotation is an important piece in the unsolved puzzle of the wind-variability mechanism. The current idea is that Corotating Interacting Regions (CIRs) are responsible for the observed wind variability. These conclusions are based on detailed and extensive monitoring of ultraviolet resonance lines formed throughout the stellar wind, and subordinate lines like Hα which probe the regions close to the star.
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© 1999 Springer-Verlag
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Kaper, L. (1999). O-star wind variability in the ultraviolet and optical range. In: Wolf, B., Stahl, O., Fullerton, A.W. (eds) Variable and Non-spherical Stellar Winds in Luminous Hot Stars. Lecture Notes in Physics, vol 523. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0106375
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DOI: https://doi.org/10.1007/BFb0106375
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