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Home Q & A Board Science-Related Homework Help Physics
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barry barry
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10 years ago
Explain how the shifting spectral lines of spectroscopic binaries let us find their periods.
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10 years ago
When aligned in our line of sight, there is no radial velocity, and all lines appear single.  A quarter of a period later, one is approaching us with its line blue shifted, and the other is receding.  Multiply this time span by four, and the two stars are back in the original positions.
Would you know my name, if I saw you in heaven?

Eric Clapton
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barry Authorbarry
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10 years ago
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