A quasar's spectral lines are:
A)emission lines with large redshifts.
B)a continuum from the synchrotron radiation.
C)fuzzy absorption lines from the merged light of the billions of stars.
D)too complex for any interpretation.
E)nonexistent, the gas so hot as to be totally ionized, so no lines are seen.

Question

Quizplus · Accepted Answer

Quasars are extremely luminous objects located in the centers of galaxies, powered by supermassive black holes. They emit a spectrum of radiation that includes both a continuum and emission lines. The emission lines in quasars have large redshifts, indicative of their high speeds and distance from Earth. Quasars are extremely luminous objects at the center of some galaxies. Their spectra show emission lines with large redshifts, indicating that these objects are receding from us at high speeds due to the expansion of the universe. This is one of the signatures of quasars and distinguishes them from other types of galaxies.

A Quasar's Spectral Lines Are