What Are the Typical Features Seen in Quasar Absorption Lines

question 64

Multiple Choice

What are the typical features seen in quasar absorption lines of intergalactic clouds?

• A)The hydrogen line is wider and lines from heavy elements are weaker at higher redshifts.
• B)The hydrogen line is narrower and lines from heavy elements are weaker at higher redshifts.
• C)The hydrogen line is wider and lines from heavy elements are stronger at higher redshifts.
• D)The hydrogen line is narrower and lines from heavy elements are stronger at higher redshifts.
• E)A few weak absorption lines are always seen at higher redshift than the quasar.

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