Carbon molecules as possible carrier of the diffuse interstellar bands

Details Carbon molecules as possible carrier of the diffuse interstellar bands Carbon molecules as possible carrier of the diffuse interstellar bands

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.128...93k&link_type=abstract

(Universitaets-Sternwarte Jena, Jena Workshop on the Role of Dust in Dense Regions of Interstellar Matter, Georgenthal, East Ger

Astronomy and Astrophysics

Astrophysics

9

Absorption Spectra, Astronomical Spectroscopy, Carbon, Interstellar Matter, Molecular Clouds, Ultraviolet Spectra, Diffuse Radiation

Scientific paper

Douglas (1977) proposed linear carbon molecules as one of the carriers of the diffuse interstellar bands. In particular, it is suggested that either the species C5, C7, or C9 should produce the most intense interstellar 443 nm band. Laboratory experiments were performed to investigate whether the basic assumption of this hypothesis is fulfilled, namely, whether a species of carbon molecules exhibits a strong absorption in the vicinity of 443 nm. For this purpose, the UV-VIS spectra of larger carbon molecules were studied, applying the matrix isolation technique. It was found that, in fact, a carbon molecule with such an absorption does exist. A preliminary interpretation of the data suggests that this band is produced by the linear molecule C7.

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