Cepheid (variable)

Cepheid (variable) [sef′ē id, sē′fēid]
n.
after CEPHEUS + -ID
any of a class of pulsating, yellow, supergiant stars whose brightness varies in regular periods: from the period-luminosity relation, the distance of such a star can be determined: sometimes cepheid (variable)

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Universalium. 2010.

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  • Cepheid (variable) — [sef′ē id, sē′fēid] n. [after CEPHEUS + ID] any of a class of pulsating, yellow, supergiant stars whose brightness varies in regular periods: from the period luminosity relation, the distance of such a star can be determined: sometimes cepheid… …   English World dictionary

  • Cepheid variable — This article is about a class of pulsating stars. For the similarly named constellation, see Cepheus (constellation). Cepheids redirects here. For the fictional species, see Blind Alley . A Cepheid (  /ˈs …   Wikipedia

  • cepheid variable — noun see cepheid * * * Astron. a variable star in which changes in brightness are due to alternate contractions and expansions in volume. Also, cepheid variable. [1900 05; CEPHE(US) + ID1] * * * Cepheid variable /sēˈfi id/ noun (astronomy) Any… …   Useful english dictionary

  • Cepheid variable — Astron. a variable star in which changes in brightness are due to alternate contractions and expansions in volume. Also, cepheid variable. [1900 05; CEPHE(US) + ID1] * * * One of a class of variable stars whose period of variation is closely… …   Universalium

  • cepheid variable — noun A radially pulsating (expanding and contracting) variable star with a regular period and known relationship between period and intrinsic brightness …   Wiktionary

  • Cepheid variable — Ce′pheid var iable n. astron. a variable star with a short period of 1 to 50 days in which changes in brightness are due to alternations in volume • Etymology: 1900–05; Cephe (us) + id I …   From formal English to slang

  • Cepheid Variable —    A Yellow Supergiant star that changes its brightness in a rather accurate cycle. The brightness may change in a day, or it may take hundreds of days. The change in brightness is caused by the star expanding and contracting like a balloon. The… …   The writer's dictionary of science fiction, fantasy, horror and mythology

  • Cepheid variable star — /ˈsifiəd/ (say seefeeuhd) noun a supergiant star which is a variable star in which changes in brightness are due to bodily pulsations. Also, Cepheid variable. {from Cephe(us), a northern constellation + id1} …   Australian English dictionary

  • Classical Cepheid variable — Classical Cepheids (also known as Population I Cepheids, Type I Cepheids, or Delta Cephei variables) are a type of Cepheid variable star. They are population I, variable stars that exhibit pulsation periods in the order of a few days to months,… …   Wikipedia

  • variable star — n. a star whose brightness varies from time to time as the result of causes operating outside the earth s atmosphere: see CEPHEID (VARIABLE), RR LYRAE VARIABLES …   English World dictionary

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