Z Andromedae: The Prototype?
Z And is considered as the “prototype” of the symbiotic stars. Besides its symbiotic spectrum, the star is also known for its characteristic light curve (and for the related spectral variations). Since many theoretical speculations on Z And and similar objects have been based on the luminosity and spectral variations of this star, it is important to make a critical analysis of the observational data concerning it.
KeywordsEmission Line Light Curve Interstellar Extinction Quiescent Phase Cool Component
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