J/A+A/662/A111ivo://CDS.VizieR/J/A+A/662/A111doi:10.26093/cds/vizier.36620111CDSZingsheim O.Massen J.Mueller H.S.PHeyne B.Fatima M.Bonah L.,Belloche A.Lewen F.Schlemmer S.2022-08-26T06:37:03Z2022-06-28T15:07:29ZCDS support team

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

cds-question@unistra.fratomic-physicsThe primary alcohol n-propanol (i.e., normal-propanol or propan-1-ol; C3H7OH) occurs in five different conformers: Ga, Gg, Gg', Aa, and Ag. All rotational spectra of the three conformers of the G family are well described, making astronomical search of their spectroscopic signatures possible, as opposed to those of the Aa and Ag conformers. Our goal is to facilitate the astronomical detection of Aa and Ag conformers of n-propanol by characterizing their rotational spectra. We recorded the rotational spectra of n-propanol in the frequency domain of 18-505 GHz. Additional double-modulation double-resonance (DM-DR) measurements were performed, more specifically with the goal to unambiguously assign weak transitions of the Aa conformer and to verify assignments of the Ag conformer. We derived a spectroscopic quantum mechanical model with experimental accuracy (with J_max_=70 and K_a,max_=6) for Aa n-propanol. Furthermore, we unambiguously assigned transitions (with J_max_=69 and K_a,max_=9) of Ag n-propanol; in doing so, we prove the existence of two tunneling states, Ag+ and Ag-. The astronomical search of all five conformers of n-propanol is now possible via their rotational signatures. These are applied in a companion article on the detection of n-propanol toward the hot molecular core Sgr B2(N2).2022A&A...662A.111Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/662/A111CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/662/A111https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/662/A111http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/662/A111https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/662/A111https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/662/A111http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/662/A111GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/662/A111/aa_nproPredicted frequencies of the Aa conformer of n-propanol (Aa_n-propanol.cat)FreqFrequency of the lineMHzem.freqdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinte_FreqEstimated or experimental error (999.9999 indicates error is larger)MHzstat.errordoubleELOLower state energy in wavenumberscm**-1phys.energy;phys.atmol.leveldoublelogIBase 10 logarithm of the integrated intensitylog(nm**2.MHz)spect.line.intensityfloatDRDegrees of freedom in the rotational partition function (0 for atoms, 2 for linear molecules, and 3 for nonlinear molecules)stat.fit.dofintGupUpper state degeneracyphys.electron.degenintTAGSpecies tag or molecular identifier (1)meta.id;phys.molintQNFMTIdentifies the format of the quantum numbers given in the field QNphys.atmol.qnintQN(12)? Quantum numbers coded according to QNFMT (2)phys.atmol.qncharJ/A+A/662/A111/ag_nproPredicted frequencies of the Ag conformer of n-propanol (Ag_n-propanol.cat)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqFrequency of the lineMHzem.freqdoublee_FreqEstimated or experimental error (999.9999 indicates error is larger)MHzstat.errordoublelogIBase 10 logarithm of the integrated intensitylog(nm**2.MHz)spect.line.intensityfloatDRDegrees of freedom in the rotational partition function (0 for atoms, 2 for linear molecules, and 3 for nonlinear molecules)stat.fit.dofintELOLower state energy in wavenumberscm**-1phys.energy;phys.atmol.leveldoubleGupUpper state degeneracyphys.electron.degenintTAGSpecies tag or molecular identifier (1)meta.id;phys.molintQNFMTIdentifies the format of the quantum numbers given in the field QNphys.atmol.qnintQN(12)? Quantum numbers coded according to QNFMT (2)phys.atmol.qncharJ/A+A/662/A111/ga_nproPredicted frequencies of the Ga conformer of n-propanol (Ga_n-propanol.cat)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqFrequency of the lineMHzem.freqdoublee_FreqEstimated or experimental error (999.9999 indicates error is larger)MHzstat.errordoublelogIBase 10 logarithm of the integrated intensitylog(nm**2.MHz)spect.line.intensityfloatDRDegrees of freedom in the rotational partition function (0 for atoms, 2 for linear molecules, and 3 for nonlinear molecules)stat.fit.dofintELOLower state energy in wavenumberscm**-1phys.energy;phys.atmol.leveldoubleGupUpper state degeneracyphys.electron.degenintTAGSpecies tag or molecular identifier (1)meta.id;phys.molintQNFMTIdentifies the format of the quantum numbers given in the field QNphys.atmol.qnintQN(12)? Quantum numbers coded according to QNFMT (2)phys.atmol.qncharJ/A+A/662/A111/gg_nproPredicted frequencies of the Gg conformer of n-propanol (Gg_n-propanol.cat)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqFrequency of the lineMHzem.freqdoublee_FreqEstimated or experimental error (999.9999 indicates error is larger)MHzstat.errordoublelogIBase 10 logarithm of the integrated intensitylog(nm**2.MHz)spect.line.intensityfloatDRDegrees of freedom in the rotational partition function (0 for atoms, 2 for linear molecules, and 3 for nonlinear molecules)stat.fit.dofintELOLower state energy in wavenumberscm**-1phys.energy;phys.atmol.leveldoubleGupUpper state degeneracyphys.electron.degenintTAGSpecies tag or molecular identifier (1)meta.id;phys.molintQNFMTIdentifies the format of the quantum numbers given in the field QNphys.atmol.qnintQN(12)? Quantum numbers coded according to QNFMT (2)phys.atmol.qncharJ/A+A/662/A111/ggg_nproPredicted frequencies of the Ggg conformer of n-propanol (Ggg_n-propanol.cat)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqFrequency of the lineMHzem.freqdoubleGupUpper state degeneracyphys.electron.degeninte_FreqEstimated or experimental error (999.9999 indicates error is larger)MHzstat.errordoublelogIBase 10 logarithm of the integrated intensitylog(nm**2.MHz)spect.line.intensityfloatDRDegrees of freedom in the rotational partition function (0 for atoms, 2 for linear molecules, and 3 for nonlinear molecules)stat.fit.dofintELOLower state energy in wavenumberscm**-1phys.energy;phys.atmol.leveldoubleTAGSpecies tag or molecular identifier (1)meta.id;phys.molintQNFMTIdentifies the format of the quantum numbers given in the field QNphys.atmol.qnintQN(12)? Quantum numbers coded according to QNFMT (2)phys.atmol.qnchar