Other
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apjs...67..135a&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 67, May 1988, p. 135-148.
Other
31
Interstellar Matter, Methyl Compounds, Millimeter Waves, Submillimeter Waves, Astronomical Spectroscopy, Line Spectra, Radio Spectra
Scientific paper
The millimeter-wave and submillimeter-wave spectrum of CH3OD, a deuterated isotope of methanol known to be present in the interstellar medium, has been studied in the laboratory. Like all isotopes of methanol, CH3OD possesses a complex dense spectrum because of the phenomenon of internal rotation, sometimes referred to as torsional motion. Approximately 300 lines in the frequency range 130-700 GHz have been assigned. These lines involve transitions between rotational states with rotational quantum number J of not greater than 9 in both the A and the E substates of the lowest torsional state (vt = 0). The present data and previous data at lower frequencies (longer wavelengths) have been combined and analyzed by a procedure called the 'internal axis method'. The analysis yields spectral constants for CH3OD which, in turn, have been used to predict the frequencies of a number of other transitions of this species not measured in the laboratory.
Anderson Todd
Crownover Richard L.
de Lucia Frank C.
Herbst Eric
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