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SlideshowReport

Three Close Binaries

Description
Three Close Binaries
Sketches of and light curves for three eclipsing binaries are shown. The phase denotes the fraction of the orbital period from one
primary minimum to the next. (a) Algol, also known as β Persei, is a semidetached binary. The deep eclipse occurs when the giant
star (right) blocks the light from the smaller, but more luminous, main-sequence star.  
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