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| Paper: |
The nature of short-term, long-term, and transient wind activity in Be stars |
| Volume: |
292, Interplay of Periodic, Cyclic and Stochastic Variability in Selected Areas of the H-R Diagram |
| Page: |
227 |
| Authors: |
Peters, G. J. |
| Abstract: |
Cyclic and apparent transient variability in the winds of Be stars are discussed. Short-term cyclical variability can be explained by either nonradial pulsations or stellar rotation, whereas long-term wind changes are probably connected with quasi-periodic activity cycles that may be caused by magnetic fields. Often what is thought to be a transient event is actually a phase-dependent variation in the circumstellar material in an interacting binary. Binarity effects in a well-known Be/Algol-type system (CX Dra) and transient wind variations in a suspected interacting binary (FY CMa) are discussed. |
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