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2、There are two types of Cepheids, called Type I (or classical) Cepheids and Type II Cepheids. Each type has its own period-l

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C20)+5)/5 4 62 54) 24 w4 76- 2 5024 6-50 24 (2 O + ซ. 2 4 +5)15 253 4 / 5

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2、There are two types of Cepheids, called Type I (or classical) Cepheids and Type II Cepheids. Each type has its own period-luminosity relation, as shown on the graph below. 10% 104- W Vir 102- 1...
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