Variable Stars Common Observation
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BL Boötis stars - anomalous Cepheids
by Ivan Adamin in March-April 2014 (#5)
BL Boö is the prototype of a subclass of pulsating variable stars called the Anomalous Cepheids. These stars are similar to classical Cepheid variables, but they do not follow the same relationship between their period and luminosity.
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