Astronomy:CN star

From HandWiki

A CN star is a star with strong cyanogen bands in its spectrum. Cyanogen is a simple molecule of one carbon atom and one nitrogen atom, with absorption bands around 388.9 and 421.6 nm.[1] This group of stars was first noticed by Nancy G. Roman who called them 4150 stars.[2]


  1. Schmitt, John L. (3 June 1970). "Stars with Strong Cyanogen Absorption". Astrophysical Journal 163: 75. doi:10.1086/150747. Bibcode1971ApJ...163...75S. 
  2. Roman, Nancy G. (1 March 1952). "The Spectra of the Bright Stars of Types F5-K5". Astrophysical Journal 116: 122. doi:10.1086/145598. Bibcode1952ApJ...116..122R.