Why Do O- and B-Type Stars Have Weaker Hydrogen Absorption

question 27

Multiple Choice

Why do O- and B-type stars have weaker hydrogen absorption lines than A-type stars?

• A) O- and B-type stars are cooler than A-type stars.
• B) A larger fraction of hydrogen atoms in O- and B-type stars is ionized.
• C) O- and B-type stars have converted much more of their hydrogen into heavier elements.
• D) A-type stars have a higher mass than O- and B-type stars and they have more hydrogen.

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Definitions:

Major Redirection

Significant strategic or operational shifts undertaken by an organization to address changing circumstances, challenges, or opportunities.

Lower-level Employees

Workers who operate at the base of an organizational hierarchy, often performing specific, operational tasks rather than holding managerial or strategic roles.

Dialogue

A conversation between two or more people, aimed at reaching understanding, exchanging ideas, or addressing issues.

Bottom-up Change

An organizational change strategy that starts at the lower levels of the organization and works its way up, focusing on employee involvement in decision-making processes.