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period-luminosity relation |
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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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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