SWS spectra of three carbon-rich evolved stars that show the emission bands due to the stretching and bending modes of C-C and C-H bonds in Polycyclic Aromatic Hydrocarbons (PAHs).
SWS spectra of three carbon-rich evolved stars that show the emission bands due to the stretching and bending modes of C-C and C-H bonds in Polycyclic Aromatic Hydrocarbons (PAHs).
This image was taken from the ISO dedicated Astronomy and Astrophysics Letter;
"The shape and strength of circumstellar PAH emission bands", F.J. Molster et al.