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Long-Term Brightness Changes in Cool Pulsating Variables
Published online by Cambridge University Press: 15 February 2018
Abstract
Several types of cool pulsating variables show unexplained long-term changes in brightness, typically on time scales of 10 to 20 times the basic (pulsational) period. The visual and photoelectric programs of the American Association of Variable Star Observers (AAVSO) are well-suited for detecting and studying these changes. Some examples are given here, including yellow hypergiants, RV Tauri stars, small- and large-amplitude red giant and super giant variables. The study of pulsating variables on long time scales provides “new perspectives” on their behavior.
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- Windows on the Instability Strip
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- Copyright © Cambridge University Press 1993