J/A+A/492/875ivo://CDS.VizieR/J/A+A/492/875doi:10.26093/cds/vizier.34920875CDSBizzocchi L.Degli Esposti C.Dore L.2017-06-28T06:58:26Z2009-01-04T19:37:13ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fratomic-physicsThe submillimetre-wave spectrum of C3O (X^1^{Sigma}^+^) 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{deg}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.2008A&A...492..875Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/492/875CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/492/875https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/492/875http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/492/875https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/492/875https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/492/875http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/492/875GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/492/875/C3OPredicted rest-frequencies and estimated 1{sigma} uncertainties (MHz) for C_3_OrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintv5v_5_ vibrational state (v_5_=0 for vibrational ground state [table5], v_5_=1 [table6], v_5_=2 [table7], and v_5_=3 [table8])phys.atmol.qnintnullableJ'Upper state quantum numberphys.atmol.qnintJLower state quantum numberphys.atmol.qnintl5l quantum number (l_5_) (no values for table5)phys.atmol.qncharFreqCalculated rest frequencyMHzem.freq;meta.modelleddoublee_Freqrms uncertainty on RFreqMHzstat.errorfloat