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Isotope Ratios in Interstellar Formaldehyde

Published online by Cambridge University Press:  14 August 2015

Marc L. Kutner ,
Dennis E. Machnik ,
Kenneth D. Tucker  and
William Massano
Marc L. Kutner
Affiliation:
Physics Dept., Rensselaer Polytechnic Institute
Dennis E. Machnik
Affiliation:
Physics Dept., Rensselaer Polytechnic Institute
Kenneth D. Tucker
Affiliation:
Physics Dept., Fordham University
William Massano
Affiliation:
Physics Dept., Fordham University

Extract

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Formaldehyde is an excellent molecule for studying isotopic abundances. It is easily observed in several connected transitions, allowing an analysis of excitation differences among species. With formaldehyde, one can also measure the same ratio using millimeter emission lines and centimeter absorption lines, which can often be interpreted more directly. A comparison of the results from the millimeter and centimeter lines can give an idea of the uncertainties in the analysis of millimeter emission lines.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 87: Interstellar Molecules , 1980 , pp. 409 - 410
Copyright
Copyright © Reidel 1980 

References

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