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.
Gemini city sights: the deep-sky treasures scattered across the Twins look great in backyard scopes
Polaris is what astronomers call a Cepheid variable star, a pulsating star used by scientists to measure distances in space.
North Star 'Polaris' closer to Earth than thought
This is important because Polaris A is a Cepheid variable star.
ARCHIVE: Good time to spot dazzling Saturn; Astronomical notes for February by Gill Pilfold of the Birmingham Astronomical Society
Quantifying the shapes of Cepheid variable star light curves is a technique that has been in use for the past several decades.
Analysis of Data Gathered by Hipparcos Satellite on Cepheid Variable Stars
High overhead toward the north on fall evenings is Cepheus, a constellation that's probably best known for hosting the prototype Cepheid variable star.
Pulsing stars in Cepheus: check in on these happening stars, both famous and obscure
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
June 1966: ex-variable star?
Zeta is a Cepheid variable star and, according to Daniel Majaess and colleagues (Astrophysical Journal Letters, 2012), a star-cluster member.
Isles of light: let the colorful stars of Gemini brighten your journey along the Milky Way
The easternmost star is X Cygni, a Cepheid variable star with a period of 16.
Millions together: the stars gather close in the southern wing of Cygnus the Swan
My 10x50s intermittently pull in about a half-dozen stars, including Cepheid variable star DL Cassiopeiae, parked on the cluster's northwestern edge.
Binocular highlight: treasures in Cass
W is a Cepheid variable star whose pulsations bring it from magnitude 5.
Magic nights of stars: explore some of the bewitching lesser-known objects in Sagittarius
It's also the brightest and nearest Cepheid variable star, changing brightness with a 3.
Polaris's pulsations pick up
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.
Debate persists on cosmic expansion: different methods don't agree on value of Hubble constant

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