As a Cluster of Stars Begins to Age, Which Type

question 18

Multiple Choice

As a cluster of stars begins to age, which type of star in the cluster will move off the main sequence of the H-R diagram first?

• A) all the stars in a cluster are born at the same time; so they will all move off the main sequence at the same time, as they evolve
• B) G type stars, like our Sun
• C) M type stars, which are the coolest
• D) the lowest mass stars, which have the least amount of fuel for fusion
• E) the O and B type stars

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