A proposed test with ISO of the presence of C_60_^+^ in the interstellar medium.

Details A proposed test with ISO of the presence of C_60_^+^ in the interstellar medium. A proposed test with ISO of the presence of C_60_^+^ in the interstellar medium.

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...311..968m&link_type=abstract

Astronomy and Astrophysics, v.311, p.968-970

Astronomy and Astrophysics

Astrophysics

4

Carbonaceous Aromatic Species, Interstellar Molecules, Infrared Spectra

Scientific paper

We propose a test for the presence of C_60_^+^ in the interstellar medium. Two near-infrared diffuse interstellar bands (9577 and 9632A), recently discovered, have been attributed to C_60_^+^. Its abundance has been deduced from the estimated oscillator strength of the transitions. This ion should also have a vibrational signature in emission, which is calculated on the basis of the partial infrared absorption spectrum of C_60_^+^ measured in the laboratory. We predict that ISO should easily detect this fullerene cation at 7.1 and 7.5μm if the DIB identification and the experimental estimates of the electronic oscillator strengths are correct. Anyway, ISO should yield the actual abundance of the ion, or an upper limit.

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