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16 July, 06:57

For what type of object is the period-luminosity relation used for determining distances?

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  1. 16 July, 08:43
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    The period-luminosity relation is used to determine the distance between cepheid variable stars. Cepheid variable stars pulsate in a predictable manner; therefore, their distance can be estimated if the time period of variation of luminosity are known.
  2. 16 July, 09:13
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    Period luminosity relation is used for determining distance for cepheids.
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