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Effects of Absorption Spectra of Ices on the Ultraviolet Extinction by Interstellar Grains

Published online by Cambridge University Press:  08 February 2017

G. B. Field ,
R. B. Partridge  and
H. Sobel
G. B. Field
Affiliation:
Princeton University, Princeton, New Jersey
R. B. Partridge
Affiliation:
Princeton University, Princeton, New Jersey
H. Sobel
Affiliation:
Princeton University, Princeton, New Jersey

Extract

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In Spite of Many Years of Research on Interstellar Grains, their composition is still unknown. Evidently it can be found only through the interaction of the grains with radiation, and one is led to the spectroscopic study of the solids composing the grains. If discrete lines, bands, or other spectral features can be discovered, they may be of great importance in the chemical analysis of the grains. So far, data of this type include the diffuse interstellar lines, the optical lines of CH, CH +, and CN (almost certainly once part of the grains), the radio lines of OH, and the distinct “kink” or curvature in the optical extinction curve (see paper by Nandy in present compilation), which may reflect spectral variations in refractive index and hence indicate a specific material.

The advent of ultraviolet and infrared techniques suggests that consideration be given to new features to be expected in those regions.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 7: Proper Motions , August 1965 , pp. 207 - 216
Copyright
Copyright © Kluwer Academic Publishers 1965

References

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