You Are Observing a Binary System with Two Stars of Masses

question 27

Multiple Choice

You are observing a binary system with two stars of masses M₁ and M₂.You determine a,the semimajor axis (also the average distance between the stars) and P,the period of their motion.Using this information in Kepler's third law,you can calculate:

• A) M₁ or M₂ but not both.
• B) M₁/M₂.
• C) M₁ + M₂.
• D) both M₁ and M₂.

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Definitions:

Vitamin D

A fat-soluble vitamin essential for calcium absorption, bone health, and immune function, which can be synthesized by the skin upon exposure to sunlight.

Melanin Production

The process by which the skin, hair, and eyes gain their color through the synthesis of the pigment melanin.

Cholecalciferol

Also known as Vitamin D3, it is a form of vitamin D that is made by the skin when exposed to sunlight and found in some foods and supplements.

Propionibacterium Acnes

A slow-growing bacterium that is linked to the skin condition acne by contributing to the inflammation of pimples.