J/A+A/645/A75ivo://CDS.VizieR/J/A+A/645/A75doi:10.26093/cds/vizier.36450075CDSCabezas C.Neeman E.Tercero B.Bermudez C.Cernicharo J.2021-06-18T13:46:18Z2021-01-15T07:35:21ZCDS support team

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

cds-question@unistra.fratomic-physicsAt least a dozen molecules with a formyl group (HCO) have been observed to ate in the interstellar medium (ISM), suggesting that other such species exist nd await discovered. However there is still a lack of high-resolution spectroscopic data for simple molecular species of this type that could provide basis for their detection. Cyclopropanecarboxaldehyde, c-C_3_H_5_CHO, is a small molecule containing a formyl group and is an interesting candidate for astrophysical detection. The rotational spectrum of cyclopropanecarboxaldehyde has been observed before, but its experimental rotational parameters are not precise enough to allow its detection in the ISM. We measured the rotational spectrum of cyclopropanecarboxaldehyde in the frequency ranges 31.5-50GHz and 72-116.5GHz using the GACELA (GAS CEll for Laboratory Astrophysics) broadband high resolution rotational spectrometer constructed at the Yebes Observatory. The spectroscopic study was supported by high-level theoretical calculations which were used in the identification of the vibrational excited states of cyclopropanecarboxaldehyde. The analysis of the rotational spectrum of cyclopropanecarboxaldehyde allowed us to obtain accurate rotational parameters for the ground state of both cis and trans isomers, which were used to derive predictions sufficiently reliable up to 500GHz. In addition to the ground states, we identified twelve and six vibrationally excited states for the trans and cis isomers, respectively, including fundamental modes, multiple excitation quanta and combination states. We found that the gas phase concentration of the trans isomer is almost 1.2 times larger than that for the cis one. The new experimental rotational parameters were employed to search for cyclopropanecarboxaldehyde in the warm molecular clouds Orion KL and Sgr B2(N) using the spectral surveys captured by ALMA (Orion) and IRAM 30m (Sgr) at 1mm and 3mm, respectively.2021A&A...645A..75Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/645/A75CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/645/A75https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/645/A75http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/645/A75https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/645/A75https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/645/A75http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/645/A75GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/645/A75/tablea6Measured transitions for CPCA trans 3nu27recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea7Measured transitions for CPCA trans nu27+nu16recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea8Measured transitions for CPCA trans nu27+nu26recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea9Measured transitions for CPCA trans 2nu27+nu16recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea10Measured transitions for CPCA trans 2nu16recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea11Measured transitions for CPCA trans 2nu27+nu26recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea12Measured transitions for CPCA trans 2nu26recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea13Measured transitions for CPCA trans 3nu27+nu16recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea14Measured transitions for CPCA cis g.srecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea15Measured transitions for CPCA cis nu27recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea16Measured transitions for CPCA cis 2nu27recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea17Measured transitions for CPCA cis nu16recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea18Measured transitions for CPCA cis nu26recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea19Measured transitions for CPCA cis 3nu27recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea20Measured transitions for CPCA cis 2nu27+nu16recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea1Measured transitions for CPCA trans g.srecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea2Measured transitions for CPCA trans nu27J"Quantum number J for lower levelinstr.det.qeintUncertUncertainty associated to frequencyMHzstat.errorfloatKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea3Measured transitions for CPCA trans 2nu27Ka"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea4Measured transitions for CPCA trans nu16UncertUncertainty associated to frequencyMHzstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea5Measured transitions for CPCA trans nu26Ka'Quantum number Ka for upper levelphys.mol.qnintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqMeasMeasured frequencyMHzem.freqdoubleUncertUncertainty associated to frequencyMHzstat.errorfloatO-CDifference between observed and calculated frequencyMHzstat.fit.residualfloatJ/A+A/645/A75/tablea21Predicted frequencies for CPCA trans at T=300KFreqFrequencyMHzem.freqdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintlogIntBase 10 logarithm of the integrated intensitylog(nm**2.MHz**-1)spect.line.intensitydoubleJ/A+A/645/A75/tablea22Predicted frequencies for CPCA cis at T=300KrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ'Quantum number J for upper levelinstr.det.qeintKa'Quantum number Ka for upper levelphys.mol.qnintKc'Quantum number Kc for upper levelphys.mol.qnintJ"Quantum number J for lower levelinstr.det.qeintKa"Quantum number Ka for lower levelphys.mol.qnintKc"Quantum number Kc for lower levelphys.mol.qnintFreqFrequencyMHzem.freqdoublelogIntBase 10 logarithm of the integrated intensitylog(nm**2.MHz**-1)spect.line.intensitydouble