J/ApJ/840/81ivo://CDS.VizieR/J/ApJ/840/81doi:10.26093/cds/vizier.18400081CDSHodges J.N.Bernath P.F.2018-03-15T09:02:02Z2018-01-22T11:46:28ZCDS support team

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

cds-question@unistra.fratomic-physicsspectroscopyultraviolet-astronomyThe OH^+^ ion is of critical importance to the chemistry in the interstellar medium and is a prerequisite for the generation of more complex chemical species. Submillimeter and ultraviolet observations rely on high quality laboratory spectra. Recent measurements of the fundamental vibrational band and previously unanalyzed Fourier transform spectra of the near-ultraviolet A^3^{Pi}-X^3^{Sigma}^-^ electronic spectrum, acquired at the National Solar Observatory (NSO) at Kitt Peak in 1989, provide an excellent opportunity to perform a global fit of the available data. These new optical data are approximately four times more precise as compared to the previous values. The fit to the new data provides updated molecular constants, which are necessary to predict the OH^+^ transition frequencies accurately to support future observations. These new constants are the first published using the modern effective Hamiltonian for a linear molecule. These new molecular constants allow for easy simulation of transition frequencies and spectra using the PGOPHER program. The new constants improve simulations of higher J-value infrared transitions, and represent an improvement of an order of magnitude for some constants pertaining to the optical transitions.2017ApJ...840...81Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/840/81CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/216/22 : 3060-3700{AA} spectra analysis of early-type stars (Bhatt+,https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/840/81https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/840/81http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/840/81https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/840/81https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/840/81http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/840/81GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVdefaultJ/ApJ/840/81/table2Line list used in fit including all relevant transitions and fit residualsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinteS1[AXc] Upper electronic statephys.atmol.configurationcharv1[0/4] Upper vibrational quantum numberphys.mol.qnintJ1[0/23] Upper J quantum numberinstr.det.qe;stat.maxintS1[0/22] Upper S quantum numberphys.atmol.qnintFn1e/fUpper F number and parityphys.atmol.qnchareS0[Xab] Lower electronic statephys.atmol.configurationcharv0[0/4] Lower vibrational quantum numberphys.mol.qnintJ0[0/23] Lower J quantum numberinstr.det.qe;stat.minintS0[0/22] Lower S quantum numberphys.atmol.qnintFn0e/fLower F number and parityphys.atmol.qncharFreq[30.3/30015.3] Transition frequencycm**-1em.freq;phys.atmol.transitiondoubleO-C[-0.1/0.1] Fit residual as observed frequency minus calculated frequencycm**-1stat.fit.residual;em.freq;stat.fit.omcdoubleLabelRo-vibrational branch labelmeta.id;phys.atmol.transitioncharr_Label[NRS] Source label of the data (1)meta.ref;pos.framechar