ch44_p27 - 27 We apply Eq 37-36 for the Doppler shift in...

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27. We apply Eq. 37-36 for the Doppler shift in wavelength: ∆λ λ = v c where v is the recessional speed of the galaxy. We use Hubble’s law to find the recessional speed: v = Hr , where r is the distance to the galaxy and H is the Hubble constant () 3 m sly 21.8 10 . × Thus, 38 6 m 21.8 10 2.40 10 ly 5.23 10 m s v ªº
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This note was uploaded on 01/23/2011 for the course PHY 214 taught by Professor Timothybolton during the Fall '10 term at Kansas State University.

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