Universe: Stars And Galaxies
Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 24, Problem 30Q
To determine

The explanation for the appearance of galaxy 3C75 having two nuclei and several radio emitting jets.

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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? Hint: The rest wavelength of H-alpha is 656  nm. I have to use the forumla mentioned in the photo I shared with this post.
You observe the H-alpha line of Hydrogen in a distant galaxy to have a wavelength of 918.4  nm. What is the radial velocity of the galaxy?
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