J/A+A/459/317ivo://CDS.VizieR/J/A+A/459/317doi:10.26093/cds/vizier.34590317CDSBruenken S.McCarthy M.C.Thaddeus P.Godfrey P.D.Brown R.D.2018-06-11T08:57:26Z2006-12-17T15:27:37ZCDS support team

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

cds-question@unistra.fratomic-physicsspectroscopyWe report new laboratory spectroscopic data on the nucleic acid uracil. The dataset has been extended both into the microwave and towards mm-wavelengths with the aim to provide accurate transition rest frequencies for astrophysical searches. The complete experimental linelist used for the analysis of the data is compiled in Table 2. Lines marked with an asterisk are taken from Brown et al. (1988, J. Mol. Struct. 190, 185 and J. Am. Chem. Soc. 110, 2329), all other lines have been measured in this work.2006A&A...459..317Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/459/317CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/459/317https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/459/317http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/459/317https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/459/317https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/459/317http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/459/317GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/459/317/table2Transitions in uracil (2,4-pyrimidinediol, molecular formula C_4_H_4_N_2_O_2_)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'J quantum number upper levelmeta.id;meta.mainintKa'Ka quantum number upper levelphys.mol.qnintKc'Kc quantum number upper levelphys.mol.qnintItot'? Itot quantum number upper levelphys.atmol.qnintnullableF'? F quantum number upper levelphys.atmol.qnintnullableJ"J quantum number lower levelmeta.idintKa"Ka quantum number lower levelphys.mol.qnintKc"Kc quantum number lower levelphys.mol.qnintItot"? Itot quantum number lower levelphys.atmol.qnintnullableF"? F quantum number lower levelphys.atmol.qnintnullableFreqTransition frequencyMHzem.freq;phys.atmol.transitiondoublee_FreqExperimental frequency uncertaintyMHzstat.errorfloatO-CDifference observed to calculated frequencyMHzstat.fit.residualfloatr_Freq[*] Measured by Brown et al. (1988, J. Mol. Struct. 190, 185 and J. Am. Chem. Soc. 110, 2329)meta.ref;pos.framechar