Suppose the Earth were a 0.10 Mʘ companion star to the Sun, but still orbiting with...

Suppose the Earth were a 0.10 Mʘ companion star to the Sun, but still orbiting with a semi-major axis of 1 AU about the real Sun. What would some alien astronomer measure the spectral line splitting width to be of the blue-green (λ=490 nm) line in the Hydrogen spectrum of the Sun? Express your answer in units of nm

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genius_generous answered 1 year ago

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