The Age of Stars in a Cluster Can Be Determined

question 38

Multiple Choice

The age of stars in a cluster can be determined by

• A) fitting the position of the main sequence to the Sun.
• B) determining the main sequence turnoff point.
• C) finding pulsating variable stars in the cluster.
• D) finding spectroscopic binaries in the cluster.
• E) counting the number of stars in each spectral class.

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Definitions:

U-500 Insulin

A highly concentrated form of insulin used to control high blood sugar in people with diabetes, particularly when high doses are needed.

Tuberculin Syringe

A small syringe used for administering tuberculin tests, typically holding 0.5 to 1 ml of fluid.

Phenytoin

An anticonvulsant medication used to treat and prevent seizures by reducing electrical conductance among brain cells.

Trough Level

The lowest concentration of a drug remaining in the body just before the next dose is due, usually measured to ensure therapeutic levels are maintained without reaching toxicity.