What Distinguishes Classical Cepheids from Type II Cepheids?

💡 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.