In Order to Turn a Star's Proper Motion into Its

question 25

Multiple Choice

In order to turn a star's proper motion into its space velocity, we must also know:

• A)its mass and spectral type.
• B)its temperature and age.
• C)its distance and radial velocity.
• D)its distance and mass.
• E)its spectral type and period of rotation.

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Definitions:

Automated

The use of technology or machinery to perform tasks without human intervention.

Manual

A handbook or guide that provides specific information or instructions about a subject or system.

Labour

Labour refers to the human effort, whether physical or mental, expended in the production of goods and services, often considered in terms of the workforce of a business or economy.

Discounted Payback Rule

A capital budgeting technique that calculates the time required to recoup the cost of an investment, taking into account the time value of money.