J/A+A/406/L47ivo://CDS.VizieR/J/A+A/406/L47doi:10.26093/cds/vizier.34069047CDSPolehampton E.T.Brown J.M.Swinyard B.M.Baluteau J.-P.2003-08-20T22:51:23Z2003-08-20T22:51:16ZCDS support team

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

cds-question@unistra.fratomic-physicsinterstellar-mediuminfrared-sourcesThe frequencies and line strengths of the ^2^{Pi}_3/2_ J=5/2-3/2 rotational transition of ^17^OH have been calculated from an analysis of its far-infrared laser magnetic resonance spectrum. These results have been used to make the first detection of a pure rotational transition of ^17^OH in the ISM. Two resolved components of this transition appear in absorption towards the giant molecular cloud Sagittarius B2, which was observed at a spectral resolution of 33km/s with the Fabry-Perot mode of the ISO Long Wavelength Spectrometer. The corresponding transition of ^18^OH was also observed and its line shape was modelled using HI measurements. The ^18^O/^17^O ratio of 3.5 was then used to compare this with the observed ^17^OH line shape.2003A&A...406L..47Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/406/L47CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/117/427 : Sgr B2 spectral survey (Nummelin+, 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/406/L47https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/406/L47http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/406/L47https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/406/L47https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/406/L47http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/406/L47GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/A+A/406/L47/freq17ohFrequencies, wavelengths and line strengthsJiRotation quantum number upperphys.atmol.qnfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFsu[1,2] Spin state upper (1)phys.atmol.configurationintFsl[1,2] Spin state lower (1)phys.atmol.configurationintJjRotation quantum number lowerphys.atmol.qnfloatFiTotal angular momentum quantum number upperphys.atmol.qnintPi[-+] Parity upper state (2)phys.atmol.levelcharFjTotal angular momentum quantum number lowerphys.atmol.qnintPj[-+] Parity lower state (2)phys.atmol.levelcharFreq? Frequency (3)MHzem.freqintnullableWav? Wavelength (3)umem.wl;phys.atmol.transitiondoublenullableSij? Line Strength (3)spect.line.intensitydoublenullable