An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Swan band
  باند ِ سوان  
bând-e Swan
Fr.: bande de Swan  

One of the three prominent bands in the spectra of comets and carbon stars caused by diatomic carbon (C2).

See also: Named after the Scottish physicist William Swan (1818-1894) who first studied the spectral analysis of radical carbon C2 in 1856; → band.