Concept information
Preferred term
spectroscopic binary
Definition
- A binary system that cannot be resolved by a telescope, but can be identified by means of the Doppler shift of the spectral lines. As stars revolve, they alternately approach and recede in the line of sight. This motion is shown up in their spectra as a periodic oscillation or doubling of spectral lines. (An Etymological Dictionary of Astronomy and Astrophysics, by M. Heydari-Malayeri, https://dictionary.obspm.fr/index.php?formSearchTextfield=spectroscopic+binary&formSubmit=Search&showAll=1)
Broader concept
Entry terms
- spectroscopic binary star
In other languages
-
French
-
étoile binaire spectroscopique
URI
http://data.loterre.fr/ark:/67375/MDL-WF2GVN0Z-W
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