Which of the Following Accurately Characterizes Emission Lines from Active

question 35

Multiple Choice

Which of the following accurately characterizes emission lines from active galactic nuclei?

• A) Active galaxies always have strong emission lines.
• B) Some active galaxies have strong emission lines, but others have no emission lines.
• C) Active galaxies never have strong emission lines.
• D) Emission lines cannot be observed from active galaxies because of their extreme luminosities.

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