Cepheid variable
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Cepheid variable [ˈsiːfɪɪd]

(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

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astronomy Cepheid Cepheus Polaris			Feast of the University of Cape Town in South Africa reexamined the period-luminosity relationship for Cepheids, using Hipparcos to measure the distances to 26 of the nearest such stars. Younger stars and an older bigger cosmos by Cowen, Ron / Science News			perinatologist perinatology Perineal perineal artery perineal gland Perineoplasty Perineorrhaphy perineotomy Perinephritis perinephrium perineum Perineurial perineuritis perineurium Perinuclear period period dress period furniture Period of incubation period of interest period of play period of revolution period of time period pains period piece Period-luminosity relationship periodate periodic periodic acid periodic apnea of the newborn periodic attractor periodic breathing Periodic comet periodic edema periodic event periodic function periodic intelligence summary periodic law periodic motion periodic movement periodic sentence periodic system periodic table periodic tenancy periodical periodical cicada Periodical year periodicalist periodically Periodicalness periodicity			period of time period of time period of tolerance period of trial period of vibration Period of Warring States Period Order Quantity Period pain Period pain Period pain Period pains Period pains Period pains period parallelogram Period Parity Progression Ratio period piece period pieces Period prevalence Period prevalence Period prevalence Period prevalence Period Revival Period Schedule Performance Index Period to Date period, latent Period-Certain Annuities Period-certain annuity Period-certain annuity Period-Doubling Analysis period-luminosity relation Period-luminosity relationship Period-Luminosity-Color Relation Periodate Periodate Periodate Lysine Paraformaldehyde Periodate-Lysine-Paraformaldehyde-Dichromate Periodate-Lysine-Paraformaldehyde-Glutaraldehyde periodates periodates Periode d'amortissement Periode de grace Période de Questions Dirigées Periode de recouvrement Periode de remboursement Periodensystem Periodensystem der Elemente periodic periodic periodic periodic Periodic abstinence Periodic abstinence Periodic abstinence Periodic abstinence periodic acid periodic acid periodic acid Periodic Acid, HIO4 periodic acid-Schiff periodic acid-Schiff Periodic acid-Schiff stain

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Cepheid variable (redirected from Period-luminosity relationship)

Cepheid variable
(redirected from Period-luminosity relationship)