J/ApJ/753/18ivo://CDS.VizieR/J/ApJ/753/18doi:10.26093/cds/vizier.17530018CDSMedcraft C.Thompson C.D.Robertson E.G.Appadoo D.R.T.McNaughton D.2014-03-22T08:42:39Z2014-03-06T12:21:45ZCDS support team

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

cds-question@unistra.frinfrared-astronomyspectroscopyatomic-physicsHigh-resolution Fourier Transform Infrared spectroscopy (FTIR) spectra of ethylene oxide (CH_2_-O-CH_2_) have been measured in the far-infrared region using synchrotron radiation. A total of 1182 lines between 15/cm (450GHz) and 73/cm (2.2THz) were assigned, with J_max_=64, expanding upon previous studies that had recorded spectra up to 12/cm, J_max_=49. All available data were co-fitted to provide greatly improved rotational constants for the ground vibrational state that are capable of predicting transitions up to 73/cm.2012ApJ...753...18Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/753/18CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/402/1 : Einstein A-coefficients for C3H2 and C2H4O (Chandra, 2003)J/ApJ/499/517 : Ethylene oxide spectrum (Pan+, 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/753/18https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/753/18http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/753/18https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/753/18https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/753/18http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/753/18GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/ApJ/753/18/table2aObserved and predicted transition frequencies of ethylene oxide in the ground vibrational stateJ'[1/49] The J' valuephys.mol.qnintKa'[0/35] The Ka' valuephys.mol.qnintKc'[0/20] The Kc' valuephys.mol.qnintJ"[0/49] The J" valuephys.mol.qnintKa"[0/34] The Ka" valuephys.mol.qnintKc"[0/21] The Kc" valuephys.mol.qnintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFobs[23061/357423] Observed transition frequency (0.7/12cm^-1^)MHzem.freqdoublee_Fobs[0.01/0.2] Uncertainty in FobsMHzstat.errorfloatFcalcCalculated transition frequencyMHzem.freqdoubleO-C[-0.5/0.5] Observed minus Calculated frequencyMHzstat.fit.residualfloatRef[a-c ] Reference(s) (1)meta.ref;pos.framecharFcmFrequency in cm^-1^ (=Fobs/29979.2458)cm**-1em.freqdoubleJ/ApJ/753/18/table2b*Observed and predicted transition frequencies of ethylene oxide in the ground vibrational stateJ'[11/64] The J' valuephys.mol.qnintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKa'[0/42] The Ka' valuephys.mol.qnintKc'[0/62] The Kc' valuephys.mol.qnintJ"[10/63] The J" valuephys.mol.qnintKa"[0/41] The Ka" valuephys.mol.qnintKc"[0/61] The Kc" valuephys.mol.qnintFobsFrequency in MHz (=29979.2458*Fcm)MHzem.freqdoubleFcm[15.3/72.8] Observed transition frequency (460/2180GHz)cm**-1em.freqdoublee_Fcm[0.0002] Uncertainty in Fcmcm**-1stat.errorfloatFcmcCalculated transition frequencycm**-1em.freqdoubleO-C[-0.0006/0.002] Observed minus Calculated frequencycm**-1stat.fit.residualdouble