The nature of short-term, long-term, and transient wind activity in Be stars

Details The nature of short-term, long-term, and transient wind activity in Be stars The nature of short-term, long-term, and transient wind activity in Be stars

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aspc..292..227p&link_type=abstract

Interplay of Periodic, Cyclic and Stochastic Variability in Selected Areas of the H-R Diagram. Edited by C. Sterken, ASP Conf. S

Astronomy and Astrophysics

Astronomy

2

Scientific paper

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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