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spectroscopic binary

American  

noun

Astronomy.
  1. 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.


spectroscopic binary Scientific  
/ spĕk′trə-skŏpĭk /
  1. See under binary star


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In visual binaries, the two stars can be seen separately in a telescope, whereas in a spectroscopic binary, only the spectrum reveals the presence of two stars.

From Textbooks • Oct. 13, 2016

Figure 18.7 shows the velocity of two stars in a spectroscopic binary system.

From Textbooks • Oct. 13, 2016

The discovery that Algol is a spectroscopic binary verified Goodricke’s hypothesis.

From Textbooks • Oct. 13, 2016

Describe the spectra for a spectroscopic binary for a system comprised of an F-type and L-type star.

From Textbooks • Oct. 13, 2016

The star β Cephei has recently been discovered to be a spectroscopic binary with the wonderfully short period of 4h 34m 11s.

From Astronomical Curiosities Facts and Fallacies by Gore, J. Ellard

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