Cepheid variable stars are classified as either ____.
A) Type A or Type B
B) Type I or Type II
C) Class A or Class B
D) Class I or Class II
E) Type C or Type R

Name: Cepheid variable stars are classified as either ____. A) Type A or Type B B) Type I or Type II C) Class A or Class B D) Class I or Class II E) Type C or Type R
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Question

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Cepheid variable stars are classified into two main types based on their metallicity and period-luminosity relation: Type I (classical Cepheids) and Type II (W Virginis stars).

Cepheid Variable Stars Are Classified as Either ____