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physical object > natural object > celestial body > collection of stars > star system > binary star > close binary > eclipsing binary > beta Lyrae star |
beta Lyrae star comparison table |
Subject | is a kind of | has definition |
---|---|---|
eclipsing binary | close binary | Eclipsing 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 star | eclipsing binary | A 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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