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Infrared Molecular Absorption Features

Published online by Cambridge University Press:  14 August 2015

S. P. Willner ,
R. C. Puetter ,
Ray W. Russell  and
B. T. Soifer
S. P. Willner
Affiliation:
University of California, San Diego
R. C. Puetter
Affiliation:
University of California, San Diego
Ray W. Russell
Affiliation:
Cornell University
B. T. Soifer
Affiliation:
California Institute of Technology

Extract

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Spectra of infrared sources associated with molecular clouds have shown absorption features at wavelengths of 6.0 and 6.8 μm. We suggest that the 6.0 μm feature can be identified with the stretching vibration of C=0 and the 6.8 μm feature with the bending vibrations of CH2 and CH3. The amount of carbon in the form of hydrocarbon molecules may be comparable to the amount in CO. This abundance of hydrocarbons is probably too large to be consistent with radio observations if the molecules are gaseous, but large abundances of hydrocarbons on the surfaces of grains may explain the infrared features, yet be unobservable in the radio.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 87: Interstellar Molecules , 1980 , pp. 381 - 386
Copyright
Copyright © Reidel 1980 

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