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Cepheid variable
or cepheid variable
noun
, Astronomy.
- a variable star in which changes in brightness are due to alternate contractions and expansions in volume.
Cepheid variable
/ ˈsiːfɪɪd /
noun
- astronomy any of a class of variable stars with regular cycles of variations in luminosity (most ranging from three to fifty days). There is a relationship between the periods of variation and the absolute magnitudes, which is used for measuring the distance of such stars
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Origin of Cepheid variable1
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