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Supergiant Variables: Recent Observational Results

Published online by Cambridge University Press:  12 April 2016

J. R. Percy
J. R. Percy*
Affiliation:
Erindale Campus, University of Toronto, Mississauga, Ontario, CanadaL5L 1C6

Abstract

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Recent observations of several types of supergiant variable stars are reviewed: massive blue, yellow and red supergiants; classical and population II Cepheids; RV Tauri stars; yellow semi-regular (SRd) variables, including UU Herculis stars; and R Coronae Borealis stars. The emphasis is on non-linear aspects such as: amplitude and shape of the light and velocity curves; multiperiodicity, irregularity and chaos; long-term changes in period and amplitude; episodic and continuous mass loss.

Type
II. Observational Facts
Information
International Astronomical Union Colloquium , Volume 134: Nonlinear Phenomena in Stellar Variability , 1993 , pp. 123 - 136
Copyright
Copyright © Kluwer 1993

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