cepheid variable stars

Mira otros diccionarios:

• 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 determi …   Universalium

• 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) — [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 — 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 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

• 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 — A star is classified as variable if its apparent brightness as seen from Earth changes over time, whether the changes are due to variations in the star s actual luminosity, or to variations in the amount of the star s light that is blocked from… …   Wikipedia

• variable star — Astron. a star that varies markedly in brightness from time to time. Also called variable. [1780 90] * * * Star whose observed brightness varies noticeably in intensity. Pulsating variables expand and contract in cycles, pulsating rhythmically in …   Universalium

• cepheid — n. (in full cepheid variable) Astron. any of a class of variable stars with a regular cycle of brightness that can be used to measure distances. Etymology: L Cepheus f. Gk Kepheus, a mythical king whose name was given to a constellation …   Useful english dictionary

• Cepheid — noun Etymology: International Scientific Vocabulary, from Cepheus Date: circa 1903 any of a class of variable stars whose very regular light variations are related directly to their intrinsic luminosities and whose apparent luminosities are used… …   New Collegiate Dictionary