2005/09/15 by Susana Iglesias‐Groth, Susana Iglesias-Groth, Iglesias-Groth, Susana
Chemistry · Materials Science · Physics and Astronomy · #Astrophysics (astro-ph) #Carbon Nanotubes in Composites #FOS: Physical sciences #Fullerene Chemistry and Applications #Quantum Mechanics and Applications #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0509443
11 pages, 3 figures, accepted in ApJL
arxiv created 2005/09/15 · openalex publication_date 2005/09/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study the rotation rates and electric dipole emission of hydrogenated icosahedral fullerenes (single and multishell) in various phases of the interstellar medium. Using the formalism of Draine and Lazarian for the rotational dynamics of these molecules in various astrophysical environments, we find effective rotation rates in the range 1-65 GHz with a trend toward lower rotational frequency as the radius of the molecule increases. Owing to the moderately polar nature of the C--H bond, hydrogenated fullerenes (fulleranes) are expected to have a net dipole moment and produce electric dipole radiation. Adopting the same size distribution proposed for fullerenes in the study of the UV extinction bump (2175 Å) we predict the dipole electric emission of mixtures of fulleranes for various levels of hydrogenation. We find that these molecules could be the carriers of the anomalous microwave emission recently detected by Watson et al. in the Perseus molecular complex.