Because of the Period-Luminosity Relation for Cepheids and RR Lyrae

question 29

Multiple Choice

Because of the period-luminosity relation for Cepheids and RR Lyrae variable stars, astronomers are able to _____

• A) determine the relationship between the period of pulses and luminosity
• B) measure the mass of a star
• C) calculate a star's diameter
• D) determine the chemical composition of a Type I Cepheid
• E) narrow their study to eclipsing binary stars only

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Definitions:

#include

A preprocessor directive in C/C++ used to include the contents of a file or library in another file.

Right-Justified

The alignment of text or data so that it is flush with the right margin, leaving any extra space to the left.

Assemble

The process of converting assembly language code into machine language instructions that a computer can execute.

Sprintf()

A function in C programming that writes formatted data to a string.