What Characteristic of a Star Cluster Is Used to Determine

question 16

Multiple Choice

What characteristic of a star cluster is used to determine its age?

• A) the chemical composition of stars in the cluster
• B) the luminosity of the faintest stars in the cluster
• C) the color of the main-sequence turnoff in the cluster
• D) the total number of stars in the cluster
• E) the apparent diameter of the cluster

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Definitions:

Middle Age

A period of human life, often considered to be roughly between the ages of 40 and 65, characterized by increased personal, professional, and societal responsibilities, and sometimes a reassessment of life's goals and achievements.

Ego Integrity

A sense of completeness and fulfillment achieved in late adulthood, involving the acceptance of life's experiences and the end of one's lifespan with a sense of wholeness and satisfaction.

Disciplined Subjectivity

The practice of maintaining a personal subjective perspective while adhering to rigorous standards of reasoning and evidence.

Psychohistory

A discipline that combines psychological analysis with historical events and figures to understand the past.