Cool faint stars lie toward the lower right. Redder color and larger magnitude identify that corner, subject to common extinction and the atmospheric color-temperature relation. A color-magnitude diagram is not a geometrical map of where the stars are located within the cluster.


Solution

Past exam of the short options paper shared by Prelims and Parts A and B of the physics course of the University of Oxford / 2016 / S26 / 1 / 3 / b / Solution

 Solution (source code)