Ultraviolet spectra of organic molecules and the interstellar medium

Details Ultraviolet spectra of organic molecules and the interstellar medium Ultraviolet spectra of organic molecules and the interstellar medium

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.273..369e&link_type=abstract

Nature, vol. 273, June 1, 1978, p. 369, 370.

Astronomy and Astrophysics

Astronomy

3

Interstellar Matter, Polysaccharides, Ultraviolet Radiation, Absorption Spectra, Absorptivity, M Stars, Spectrophotometry

Scientific paper

Comparisons between laboratory spectra of the polysaccharides cellulose and starch and those of astronomical objects in the dark clouds near the Trapezium in the 2-30 micrometer range reveal absorption bands characteristic of considerable interstellar abundance. It is noted, however, from UV and IR observations, that the presence of water ice and silicates (especially in the ejecta from late M-type stars) make a positive determination of polysaccharide abundance difficult. Laboratory analyses of UV and IR transmission curves for cellophane are used as a control.

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