Using the Technique of Main-Sequence Fitting to Determine the Distance

question 133

Multiple Choice

Using the technique of main-sequence fitting to determine the distance to a star cluster requires that ________.

• A) we have telescopes powerful enough to allow us to identify the spectral types of main-sequence stars of many masses in the cluster
• B) the cluster be near enough for us to measure the parallax of its stars
• C) we use ultraviolet and X-ray telescopes
• D) we have a well-calibrated period-luminosity relation for Cepheid variable stars

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Definitions:

Psychological Ownership

The feeling of possessorship and of being psychologically tied to an object, job, or workplace, which can influence attitudes and behaviors.

Legal Ownership

The official right to possess or use property based on a legal framework which recognizes one's claim to the asset.

Scientific Management

A management theory that analyzes and synthesizes workflows to improve economic efficiency, particularly labor productivity.

Job Enrichment

A method of job design aimed at enhancing job satisfaction and performance by adding tasks that increase responsibility, autonomy, and opportunities for personal growth.