The turnoff point for a star refers to the point on the Hertzsprung-Russell diagram where it leaves the main sequence after the exhaustion of its main fuel. By plotting the turnoff point of the stars in star clusters, one can estimate the clusters age.
Read more about Turnoff Point: Stars With No Turnoff Point
Famous quotes containing the word point:
“The whole point about the true unconscious is that it is all the time moving forward, beyond the range of its own fixed laws or habits. It is no good trying to superimpose an ideal nature upon the unconscious.”
—D.H. (David Herbert)