Lines in the spectra of supergiant stars are broader than the same spectral lines in main sequence stars of the same spectral type.

Name: Lines in the spectra of supergiant stars are broader than the same spectral lines in main sequence stars of the same spectral type.
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Question

Quizplus · Accepted Answer

Spectral lines in supergiant stars are narrower than in main sequence stars of the same spectral type due to lower surface gravity and less pressure broadening.

Lines in the Spectra of Supergiant Stars Are Broader Than