If a Globular Cluster Were 1,000 Pc Away from Us

question 29

Multiple Choice

If a globular cluster were 1,000 pc away from us and an RR Lyrae star in it had an absolute magnitude of 0.5, what would its apparent magnitude be?

• A) 4.0
• B) 6.5
• C) 8.0
• D) 10.5
• E) 15.5

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Definitions:

Cardiomyopathy

A group of diseases that affect the heart muscle itself, potentially leading to heart failure and arrhythmias.

Aneurysm

An abnormal bulge or ballooning in the wall of a blood vessel, often leading to the risk of rupture.

Marfan's Syndrome

A genetic disorder that affects the body's connective tissue, leading to abnormalities in the heart, blood vessels, bones, joints, and eyes.

High-Density Lipoprotein (HDL)

A type of cholesterol in the blood, known as "good" cholesterol because high levels are associated with a lower risk of heart disease.