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spectroscopic binary

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noun Astronomy.
a binary star having components that are not sufficiently separated to be resolved by a telescope, known to be a binary only bythe variations in wavelength of emitted light that are detected by a spectroscope.
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How to use spectroscopic binary in a sentence

Scientific definitions for spectroscopic binary

spectroscopic binary
[ spĕk′trə-skŏpĭk ]

See under binary star.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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