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A spectral line normally at 3000 Angstroms is Doppler shifted to 2995 Angstroms. What is the radial component of velocity for the source? |
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In a double-lined spectroscopic binary, why do the lines merge to one during certain points in the stars' orbits? |
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How do we determine the period of a spectroscopic binary from the velocity curve? For HD 80715 what is the period as determined from its velocity curve? |