VV Cephei vs Algol
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VV Cephei
VV Cephei is an eclipsing binary system in the constellation Cepheus composed of a very large, cool M-type supergiant and a hotter B-type companion. The two stars orbit each other roughly every 20.3 years, and eclipses last many months because the supergiant has an enormous extended atmosphere. Material from the cool primary interacts with the hot companion, making the system useful for studying m...
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Algol
Algol is a binary star system notable for its predictable dimming due to an eclipsing orbit. The primary and secondary stars regularly pass in front of each other from our perspective, causing fluctuations in brightness. This behavior was one of the first astronomical phenomena to be explained through scientific analysis, initially by John Goodricke. It’s studied by astronomers interested in binar...
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