halloween572 halloween572

04-12-2017
Physics

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Algol consists of a 3.7 msun main-sequence star and a 0.8 msun subgiant. why does this seem surprising, at least at first?

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bushrathequeen2 bushrathequeen2

05-12-2017

The two stars should be the same age, so we'd expect the subgiant to be more massive than the main-sequence star.

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