The figure below shows the H-R diagram of stars from the cluster 47 Tucanae.Explain what the main-sequence turnoff is and how it can be used to determine the age of the cluster.
Definitions:
Price
The sum required, anticipated, or paid in currency as a swap for goods.
Miles
A unit of distance measurement equal to 5,280 feet or approximately 1.609 kilometers, commonly used in the United States.
Second-Class Tickets
Tickets offered by transportation services, such as trains or airplanes, that offer a lower level of comfort and amenities compared to first-class at a reduced price.
First-Class Tickets
Tickets that offer premium services and amenities to passengers, typically at a higher price.
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