Explain why H-R diagrams look different for star clusters of different ages.?
How does the location of the main-sequence turnoff point tell us the age of the star cluster?
physics and astronomy
- 1 decade agoFavorite Answer
If the cluster is very old or very young, more stars in it are off the main sequence (that contains normal middle-aged starts)
The older the cluster the fainter the main sequence turn-off