Cepheid variable

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Related to Cepheid variable star: Delta Cepheid, Period-luminosity relationship

Cepheid variable

(ˈsiːfɪɪd)
n
(Astronomy) 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

Ce′pheid var`iable


n.
a variable star with a short period of 1 to 50 days in which changes in brightness are due to alternations in volume.
[1900–05; Cephe (us) + -id1]
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References in periodicals archive ?
A classic Cepheid variable star, Mekbuda cycles between magnitudes 3.
Polaris is what astronomers call a Cepheid variable star, a pulsating star used by scientists to measure distances in space.
Quantifying the shapes of Cepheid variable star light curves is a technique that has been in use for the past several decades.
High overhead toward the north on fall evenings is Cepheus, a constellation that's probably best known for hosting the prototype Cepheid variable star.
Fernie of David Dunlap Observatory, [states] that a very well-known Cepheid variable star, RU Camelopardalis, has recently ceased to pulsate and now appears to be practically constant in brightness
Zeta is a Cepheid variable star and, according to Daniel Majaess and colleagues (Astrophysical Journal Letters, 2012), a star-cluster member.
The easternmost star is X Cygni, a Cepheid variable star with a period of 16.
My 10x50s intermittently pull in about a half-dozen stars, including Cepheid variable star DL Cassiopeiae, parked on the cluster's northwestern edge.
W is a Cepheid variable star whose pulsations bring it from magnitude 5.
It's also the brightest and nearest Cepheid variable star, changing brightness with a 3.
For standard candles, the team used Cepheid variable stars, which pulsate at a rate that is correlated with their brightness, and type la supernovas, whose brightness properties are well-understood.