J/PAZh/33/143ivo://CDS.VizieR/J/PAZh/33/143CDSLapinov A.V.Golubiatnikov G.Yu.Markov V.N.Guarnieri A.2017-07-11T13:09:10Z2007-11-07T15:27:47ZCDS support team

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

cds-question@unistra.fratomic-physicsinterstellar-mediumDetailed studies of the internal motions of dark clouds using spectral lines of many molecules require a laboratory frequency accuracy of the order of a few m/s. Based on our laboratory studies of the HNCO rotational spectrum in the ground vibration state, we have increased significantly the accuracy of frequency calculations in a wide range of quantum numbers. We have achieved an 1{sigma} uncertainty for rotational transitions in the Ka=0,1 states recalculated to the Doppler velocity scale <2m/s for all frequencies <1.1THz. This value allows radio-astronomical measurements with an accuracy comparable to that of the highest-precision observations based on spectral lines of other molecules.2007PAZh...33..143Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/PAZh/33/143CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PAZh/33/143https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/PAZh/33/143http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/PAZh/33/143https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/PAZh/33/143https://vizier.iucaa.in/viz-bin/votable?-source=J/PAZh/33/143http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/PAZh/33/143GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/PAZh/33/143/measuredCombined table from original tablesRefReference (2)meta.ref;pos.frameintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTSimbad column added by the CDSphys.atmol.configurationcharJJ quantum number of upper energy levelphys.atmol.qnintKaKa quantum number of upper energy levelphys.atmol.qnintKc? Kc quantum number of upper energy level (1)phys.atmol.qnintnullableJ'J quantum number of lower energy levelphys.atmol.qnintKa'Ka quantum number of lower energy levelphys.atmol.qnintKc'? Kc quantum number of lower energy levelphys.atmol.qnintnullableFreqfrequency of transitionMHzem.freqdoublee_FreqUncertainty in FreqMHzstat.errorfloatO-C(Observed - calculated) frequencyMHzstat.fit.residualfloatJ/PAZh/33/143/table6Calculated HNCO rotational frequencies (MHz) for Ka=0,1 using spectroscopic constants from Table 4 of the paperrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJJ quantum number of upper energy levelphys.atmol.qnintKaKa quantum number of upper energy levelphys.atmol.qnintKcKc quantum number of upper energy levelphys.atmol.qnintJ'J quantum number of lower energy levelphys.atmol.qnintKa'Ka quantum number of lower energy levelphys.atmol.qnintKc'Kc quantum number of lower energy levelphys.atmol.qnintFreqCalculated frequency of transitionMHzem.freqdoublee_FreqUncertainty in Freq (1)MHzstat.errordoublesigVEstimated uncertainty in Doppler velocity scalem/sstat.error;phys.veloc;instr.scalefloat