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physical object > natural object > celestial body > collection of stars > star system > binary star > close binary > eclipsing binary > beta Lyrae star
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beta Lyrae star comparison table
Subject is a kind of has definition
eclipsing binaryclose binaryEclipsing variables whose orbital plane lies so nearly in the line of sight that eclipses, as seen from the Earth, can occur and can be detected from their light curves.
beta Lyrae stareclipsing binaryA class of eclipsing binary whose secondary minima are intermediate between those of Algol and those of W UMa. The prototype beta Lyr (B8.5 II, F V) is a complex eclipsing system and is presently in a state of rapid mass transfer. The spectrum of one companion is invisible; it may be a black hole. Beta Lyrae is also a weak radio source.

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