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Explorations an Introduction to Astronomy Thomas T. Arny | ||||||||
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Chapter
Images
Chapter 12, Figure 12
Figure
12.12
Measuring
a star's rotation velocity. As a star spins, one edge approaches, making a
blue shift, and the other edge recedes, making a red shift. The result is
that spectral lines are widened. The line's width can give the star's rotation
velocity.
