J/ApJ/662/750ivo://CDS.VizieR/J/ApJ/662/750doi:10.26093/cds/vizier.16620750CDSVander Auwera J.Moazzen-ahmadi N.Flaud J.-M.2009-07-04T13:43:56Z2009-07-04T13:37:48ZCDS support team

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

cds-question@unistra.fratomic-physicsThe {nu}9 fundamental band of ethane occurs in the 12um region. It is the strongest band of ethane in a terrestrial window in the thermal infrared and is commonly used to determine ethane's abundance in the atmospheres of the Jovian planets and comets and to determine their temperature. Precise and accurate absolute intensities of this band are crucial for correct interpretation of recent Cassini observations of ethane spectra in the atmospheres of Saturn and Titan, as well as of Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) observations in the terrestrial atmosphere. Using a spectrum of the {nu}9 band of ethane recorded at 278K at the Pacific Northwest National Laboratory, we show that the line parameters available in the HITRAN and GEISA databases do not allow reproduction of the experimental data to within their accuracy.2007ApJ...662..750Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/662/750CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/662/750https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/662/750http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/662/750https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/662/750https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/662/750http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/662/750GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/662/750/table4*Content of linelist "LIST 3" (HITRAN isotopologue number of ^12^C_2_H_6_ = 271)V'[19,46] Upper vibrational state (3)phys.atmol.qnintE"Lower state energycm**-1phys.energy;phys.atmol.leveldoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintnu[706.6,961.2] Line frequency (vacuum wavenumber)cm**-1em.freq;spect.linedoublesigijIntegrated absorption cross section at 296K (1)cmphys.atmol.crossSectiondoublegamAirAir-broadening parameter at 296K (in cm^-1^/atm)spect.line.broadfloatV"[14,44] Lower vibrational state (3)phys.atmol.qnintJ'[0,46] Upper J level rotational quantum numberinstr.det.qe;phys.mol.rotationintK'[-1,23] Upper K level rotational quantum numberphys.atmol.qnintsig'[0,3] Upper {sigma} level torsional quantum numberphys.atmol.qnintl'[-1/1] Upper l level vibrational angular momentum quantum numberphys.atmol.qnintJ"[0/45] Lower J level rotational quantum numberinstr.det.qe;phys.mol.rotationintK"[0/22] Lower K level rotational quantum numberphys.atmol.qnintsig"[0/3] Lower {sigma} level torsional quantum numberphys.atmol.qnintl"[0] Lower l level vibrational angular momentum quantum numberphys.atmol.qn;phys.mol.vibrationintIerr1[2,4] Uncertainty index for line position (4)meta.codeintIerr2[3,5] Uncertainty index for integrated absorption cross section (4)meta.codeintIerr3[1] Uncertainty index for the air-broadening parameter (4)meta.codeint