period-luminosity relation

period-luminosity relation

[′pir·ē·əd ‚lü·mə′näs·əd·ē ri‚lā·shən]
(astronomy)
Relation between the periods of Cepheid variable stars and their absolute magnitude; the absolutely brighter the star, the longer the period.
References in periodicals archive ?
He identified the first Miras in the Magellanic Clouds, leading to the discovery that these variables obey a tight period-luminosity relation (Glass & Evans, 1981).
A period-luminosity relation for Mira variables in the Large Magellanic Cloud, Nature, 291, 303- 304.
Systematic errors such as whether chemical composition differences among Cepheids might affect the period-luminosity relation, will be examined using the infrared data.