How do astronomers test models of stellar evolution?
A) by comparing the paths in the H-R diagram predicted by models with the H-R diagrams of star clusters
B) by measuring the number of stars in a cluster and comparing with the number predicted by the models
C) by recording the properties of a star over an extended period of time
D) by assuming that all the stars in our galaxy formed at the same time, and comparing with predictions of the models

Question

Quizplus · Accepted Answer

Astronomers test models of stellar evolution by comparing the predicted paths in the Hertzsprung-Russell (H-R) diagram with the observed H-R diagrams of star clusters, as these clusters contain stars of similar age and composition, allowing for effective comparison.

How Do Astronomers Test Models of Stellar Evolution