Abstract
Since its discovery in the spectrum of NGC 7027, the family of weak IR bands, the so called unidentified IR bands (hereinafter UIR), has been found in emission in a wide variety of galactic and extragalactic sources (Aitken, 1981; Bregman et al., 1983; Allamandola, 1984; Willner, 1984; Cohen et al., 1986). As the number of observations has increased, new features have been revealed (de Muizon et al., 1986) so that we have at present a group of eleven bands. Their relative intensity may vary a little (Simpson et al., 1984) while their widths seem to be source independent. Due to the ubiquity of the bands, a great effort has been put in identifying both the nature of the emitting material and the emission mechanism.
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© 1988 Kluwer Academic Publishers
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Blanco, A., Bussoletti, E., Colangeli, L., Fonti, S., Orofino, V. (1988). Experimental Evidences for HAC and PAHs Soup in Space. In: Bussoletti, E., Fusco, C., Longo, G. (eds) Experiments on Cosmic Dust Analogues. Astrophysics and Space Science Library, vol 149. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3033-9_12
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DOI: https://doi.org/10.1007/978-94-009-3033-9_12
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