Aromatic and aliphatic organic materials on Iapetus: Analysis of Cassini VIMS data.

Highlights: [•] We extract the spectral signature of organics on Iapetus. [•] The organic signature is analyzed with Gaussian fitting. [•] We confirm the presence of aliphatic and aromatic organics. [•] The ratio of aromatics to aliphatics is calculated. [•] The ratio of CH2 to CH3 functional groups is derived. [ABSTRACT FROM AUTHOR]