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Observed Periodic Phenomena

Published online by Cambridge University Press:  12 April 2016

D. Baade
D. Baade*
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching b. München, Germany

Abstract

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The wide range of periodic and cyclic variabilities commonly observed in Be stars and their circumstellar disks is reviewed. Many of them are related to the basic nonradial pulsation, the effects of which may range from the photosphere to the disk. Through pulsation-triggered outbursts, some stars may owe their Be characteristics largely to their intrinsic variability. However, because late-type Be stars do not normally show detectable short-periodic variability, this is probably not true of all Be stars. Comparisons are made with other variable early-type stars.

Type
3. Periodic Variations
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 178 - 191
Copyright
Copyright © Astronomical Society of the Pacific 2000

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