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J/A+A/492/875       Rest frequencies for C3O                  (Bizzocchi+, 2008)

Accurate rest frequencies for the submillimetre-wave lines of C3O in ground and vibrationally excited states below 400 cm-1. Bizzocchi L., Degli Esposti C., Dore L. <Astron. Astrophys. 492, 875 (2008)> =2008A&A...492..875B
ADC_Keywords: Atomic physics Keywords: molecular data - methods: laboratory - techniques: spectroscopic - radio lines: ISM Abstract: The submillimetre-wave spectrum of C3O (X1Σ+) has been investigated in the laboratory using a source-modulation microwave spectrometer equipped with a gas-phase flow pyrolysis system for the production of unstable chemical species. C3O was produced by thermal decomposition of fumaryl chloride at 900°C. Thirty-seven new rotational transitions were observed in the frequency range 307-740GHz for the ground vibrational state, reaching a J quantum number as high as 76. Additionally, new millimetre-wave and submillimetre-wave lines were recorded for the bending fundamental v5=1, and for its overtone v5=2 and v5=3 whose rotational spectra have been identified for the first time. The new laboratory measurements provide much improved rest frequencies in the submillimetre spectral region for the ground state spectra of C3O, and for the first levels of its low-energy v5 vibrational ladder, useful for the radioastronomical identification of the irrotational lines in the ISM. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table5.dat 31 84 Predicted rest-frequencies and estimated 1σ uncertainties (MHz) for C3O in its vibrational ground state table6.dat 31 162 Predicted rest-frequencies and estimated 1σ uncertainties (MHz) for C3O in the v5=1 vibrationally excited state table7.dat 31 239 Predicted rest-frequencies and estimated 1σ uncertainties (MHz) for C3O in the v5=2 vibrationally excited state table8.dat 31 316 Predicted rest-frequencies and estimated 1σ uncertainties (MHz) for C3O in the v5=3 vibrationally excited state
Byte-by-byte Description of file: table5.dat table6.dat table7.dat table8.dat
Bytes Format Units Label Explanations
1- 2 I2 --- J' Upper state quantum number 4 A1 --- --- [-] 6- 7 I2 --- J Lower state quantum number 10- 11 A2 --- l5 l quantum number (l5) (no values for table5) 13- 24 F12.4 MHz Freq Calculated rest frequency 26- 31 F6.4 MHz e_Freq rms uncertainty on RFreq
Acknowledgements: Luca Bizzocchi, luca.bizzocchi(at)unibo.it
(End) Patricia Vannier [CDS] 14-Oct-2008
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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