The surface temperatures and apparent magnitudes of stars in a hypothetical star cluster are measured and plotted in the similar way as that of the HR-diagram. If it is found that most of the stars in the cluster lie on a band which is approximately parallel to the main sequence of the HR-diagram but shifted downwards by 10, what approximately is the distance of this star cluster from the Earth? 1000 pc 400 pc 700 pc 100 pc
The surface temperatures and apparent magnitudes of stars in a hypothetical star cluster are measured and plotted in the similar way as that of the HR-diagram. If it is found that most of the stars in the cluster lie on a band which is approximately parallel to the main sequence of the HR-diagram but shifted downwards by 10, what approximately is the distance of this star cluster from the Earth? 1000 pc 400 pc 700 pc 100 pc
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Transcribed Image Text:The surface temperatures and apparent magnitudes of stars in a hypothetical star cluster are measured and plotted in the similar way as that of the HR-diagram. If it is found
that most of the stars in the cluster lie on a band which is approximately parallel to the main sequence of the HR-diagram but shifted downwards by 10, what approximately
is the distance of this star cluster from the Earth?
1000 рс
400 pc
700 рс
100 рс
O O O
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