The Radial Velocity of a Star or Other Object Is

question 293

Multiple Choice

The radial velocity of a star or other object is measured by:

• A) measuring the change in the angular diameter of the object.
• B) watching the object move compared with the background stars.
• C) measuring the intensity of the light in different regions of the blackbody curve.
• D) observing the Doppler shift of spectral lines in the light from the object.

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Definitions:

Jurisdiction

The legal authority granted to a court or legal body to administer justice within a certain geographic area or over certain types of legal cases.

Security Interest

A legal claim or lien on property, either personal or real, granted to a creditor to secure payment of a debt or performance of some other obligation.

Security Instrument

A legal document that secures the payment of a debt or performance of an obligation by granting an interest in a piece of property.

Registration

The act of recording or enrolling an entity's details officially with an organization or authority, often to grant it certain rights or privileges.