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The hydrogen balmer line H has a wavelength of 486.1 nm. it is shifted to 563.9 nm in the spectrum of 3c273?

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What is the red shift of this quasar?

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  1. (563.9 / 486.1)^2 = (1-b) / (1+b)

    1.35 = (1-b) / (1+b)

    1.35 + 1.35b = 1 - b

    1.35 = 1 - 2.35b

    -2.35b = .35

    b = -0.149 = 0.149c.

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