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What Distinguishes Classical Cepheids from Type II Cepheids?

šŸ’” The Answer

  • Classical Cepheids are young, massive stars found in spiral arms, with periods up to 100 days.
  • Type II Cepheids are older, lower-mass stars in globular clusters and galactic halos.
  • Their period-luminosity relations differ, requiring separate calibrations.
  • Both serve as distance indicators but for different stellar populations.

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