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Tagged with globular-clusters hr-diagram
2 questions
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Difference in HR diagram clusters
I was wondering what the difference in an HR-diagram would be between an open and globular cluster.
I've trying to compare both by looking up diagrams online, but can't find diagrams with same axes. I ...
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Why do blue horizontal branch stars turn downwards on the HR diagram as opposed to red horizontal branch stars which remain fairly constant?
Horizontal branch stars (HB) burn helium at their cores. Red horizontal branch (RHB) stars experience an increase in temperature while their radii decrease so their luminosity remains somewhat ...
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