The Star P Cygni (In the Constellation Cygnus, the Swan)

question 219

Multiple Choice

The star P Cygni (in the constellation Cygnus, the Swan) is surrounded by an extensive low-density atmosphere. It has a bright, continuous spectrum with many narrow, dark absorption lines and a few bright emission lines. The bright, continuous part of the spectrum is produced by

• A) only the part of the low-density atmosphere that is between Earth and the surface of the star.
• B) the low-density atmosphere of the star emitting light in all directions.
• C) all parts of the star, the stellar surface, and the atmosphere, equally.
• D) the hot, dense, opaque gas of the star's surface.

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Definitions:

Comorbidity

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Anxiety

an emotion characterized by feelings of tension, worried thoughts, and physical changes like increased blood pressure that can be a normal reaction to stress or part of an anxiety disorder.

Depression

A mental disorder exemplified by a continual sense of despair or apathy towards activities, leading to considerable difficulties in performing daily tasks.

Confirmation Bias

The tendency to filter, read, prefer, and recall facts in such a way that it endorses one's established convictions or speculations.