21st Century Astronomy
21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 5, Problem 34QP
To determine

The magnitude and direction of the radial velocity of the galaxy

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You observe the H-alpha line of Hydrogen in a distant galaxy to have a wavelength of 754.4  nm. What is the radial velocity of the galaxy? Hint: The rest wavelength of H-alpha is 656  nm.
You observe the H-alpha line of Hydrogen in a distant galaxy to have a wavelength of 754.4  nm. What is the radial velocity of the galaxy?
You observe the H-beta line of Hydrogen in a distant galaxy to have a wavelength of 558.9 nm. What is the radial velocity of the galaxy?
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