Eclipsing Binary Systems

question 59

Multiple Choice

Eclipsing binary systems:

• A) orbit in the plane of the sky
• B) exhibit large radial velocity shifts
• C) contain equal mass stars
• D) contain stars that pass in front of one another during their orbit
• E) contain stars that can be resolved as two separate stars

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Definitions:

Quantity Demanded

The total amount of a good or service that consumers are willing and able to purchase at a specific price level, at a given moment.

Nitrogen Oxide

Gases produced from the reaction between nitrogen and oxygen during combustion at high temperatures, often contributing to air pollution.

Pollution Authority

An organization or regulatory body responsible for controlling or reducing pollution to protect the environment.

Tradable Permits

A system where rights to emit pollution or other substances are given a market value and can be bought and sold.