Use the data for M45 and 47 Tuc tabulated below to answer this question.
Use the Dias Open Cluster Catalog and the Harris Globular Cluster Catalog to answer this question.
Include a copy of your plot with your answers.
Show explicitly that observable surface brightness μB is distance independent.
A simple spherically symmetric potential commonly used to approximate
star clusters is the Plummer Potential:
|Absolute magnitude||M - Mo = -2.5 log(L/Lo)|
|Solar absolute magnitude||MoB = 5.48 *|
|Distance modulus||m - M = 5 log(d) - 5|
|Data for 47 Tuc and M45||Main Sequence Lifetimes|