What is frequency of the light detected by astronomers

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Reference no: EM13981222

A spiral arm galaxy is large group of stars which rotates about a central bulge. Our own Milky Way galaxy is just one such formation. Let's assume we have another spiral arm galaxy whose center is 23.6 light-years from earth and is moving away from earth at a velocity of 33 X10⁵ m/sec. The galaxy is rotating such that points in the extreme parts of it's spiral arms are rotating with a speed of 55 X10⁵ m/sec relative to the center. Light with a particular frequency of 8.32 X 10¹⁴Hz is emitted from stars in both arms.

1) What is frequency of this light detected by astronomers that are observer the glaxay arm that is moving away from the earth?

2) What is frequency of this light detected by astronomers that are observer the glaxay arm that is moving towards the earth?

Reference no: EM13981222

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