Dimethyl ether laboratory spectra up to 2.1THz (Endres+, 2009)

Details Dimethyl ether laboratory spectra up to 2.1THz (Endres+, 2009) Dimethyl ether laboratory spectra up to 2.1THz (Endres+, 2009)

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ycat..35040635e&link_type=abstract

VizieR On-line Data Catalog: J/A+A/504/635. Originally published in: 2009A&A...504..635E

Physics

Atomic Physics

Atomic Physics

Scientific paper

Dimethyl ether (CH3OCH3) is one of the largest or detected in the interstellar medium. As an asymmetric top molecule with two methyl groups which undergo large amplitude motions and a dipole moment of mub=1.3D it conveys a dense spectrum throughout the terahertz region and contributes to the spectral line confusion in astronomical observations at these frequencies. Rotational spectra of dimethyl ether in its ground vibrational states are presented in this paper, which have been measured in the laboratory and analyzed covering frequencies up to 2.1THz. The analysis is based on an effective Hamiltonian for a symmetric two-top rotor and includes experimental data published so far. Frequency predictions are presented up to 2.5THz for astronomical applications with accuracies better than 1MHz.
(1 data file).

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