Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...406l..39k&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 406, no. 1, p. L39-L42.
Astronomy and Astrophysics
Astronomy
118
Astronomical Spectroscopy, Line Spectra, Magnesium Compounds, Molecular Spectroscopy, Radio Astronomy, Electron Transitions, Molecular Spectra, Radio Spectroscopy, Stellar Envelopes
Scientific paper
The linear MgNC radical was detected, for the first time, by laboratory microwave spectroscopy, and six unidentified lines in IRC + 10216 reported by Guelin et al. (1986) were assigned to the transitions of this radical. The radical was produced in a free space absorption cell by a dc discharge in a mixture of magnesium vapor, argon, and cyanogen. Observed spectral lines in the 250-370 GHz region were analyzed by using the 2Sigma energy level expression, to give the rotational, centrifugal distortion and spin-rotation constants: B0 = 5966.8969(24) MHz, D0 = 0.004 2338(35) MHz, H0 = 0.308(16) x 10 exp -7 MHz, and gamma0 = 15.219(13) MHz, with one standard deviation in parentheses.
Hirano Tsuneo
Kagi Eriko
Kawaguchi Kentarou
Saito Shuji
Takano Shuro
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