3.13 Spectral Line Widths
Pre-Lecture Reading 3.13
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•Astronomy Today, 8th Edition (Chaisson & McMillan)
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•Astronomy Today, 7th Edition (Chaisson & McMillan)
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•Astronomy Today, 6th Edition (Chaisson & McMillan)
Video Lecture
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•Spectral Line Widths (5:20)
Supplementary Notes
Spectral Line Broadening
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•Observed absorption and emission line widths can be Doppler broadened by:
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•Thermal motions
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•Rotational motion
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•Turbulent motions
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•Other mechanisms can also broaden, and sometimes even split, absorption and emission lines. We will learn more about these in Astronomy 102.
Assignment 3
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•Do Question 10.