Concept information
Terme préférentiel
spectroscopic binary
Définition
- 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)
Concept générique
Synonyme(s)
- spectroscopic binary star
Traductions
-
français
-
étoile binaire spectroscopique
URI
http://data.loterre.fr/ark:/67375/MDL-WF2GVN0Z-W
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