The longer the period of pulsation for a Cepheid, the more massive and luminous the variable giant star is.

Name: The longer the period of pulsation for a Cepheid, the more massive and luminous the variable giant star is.
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The period-luminosity relationship for Cepheid variables indicates that those with longer pulsation periods are indeed more luminous, and generally, more luminous stars are more massive.

The Longer the Period of Pulsation for a Cepheid, the More