CO adsorption and the optical propertiies of interstellar grains

Details CO adsorption and the optical propertiies of interstellar grains CO adsorption and the optical propertiies of interstellar grains

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..92...45d&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 92, no. 1, May 1983, p. 45-51. Research supported by the Natural Sciences

Astronomy and Astrophysics

Astrophysics

1

Adsorption, Carbon Monoxide, Cosmic Dust, Interstellar Extinction, Interstellar Matter, Optical Properties, Least Squares Method, Magnesium Oxides, Spectral Reflectance, Spectrum Analysis

Scientific paper

Laboratory data on the spectra of CO adsorbed on small MgO particles show that CO adsorption leads to a weakening of the 220 nm band together with a shift of this band to shorter wavelengths. CO adsorption also results in the formation of a cyclic CO carbon ion that absorbs at 2.15 μm-1. It is shown that this band provides a close match to a major component of the very broad structure seen in interstellar extinction at the same energy. Effects of CO adsorption on the 220 nm band and VUV extinction are discussed in light of recent observational data on stars with peculiar extinction curves.

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