J/A+A/492/257ivo://CDS.VizieR/J/A+A/492/257doi:10.26093/cds/vizier.34920257CDSFaure A.Josselin E.2010-03-01T08:25:07Z2010-03-01T09:24:26ZCDS support team

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

cds-question@unistra.fratomic-physicsThe interpretation of water line emission from infrared and submillimetre observations requires a detailed knowledge of collisional rate coefficients over a wide range of levels and temperatures. We attempt to determine rotational and rovibrational rate coefficients for H_2_O colliding with both H_2_ and electrons in warm, molecular gas. Pure rotational rates are derived by extrapolating published data using a new method partly based on the information (phase space) theory of Levine and co-workers. Ro-vibrational rates are obtained using vibrational relaxation data available in the literature and by assuming a complete decoupling of rotation and vibration. Results. Rate coefficients were obtained for the lowest 824 ro-vibrational levels of H_2_O in the temperature range 200-5000K. Our data is expected to be accurate to within a factor of ~5 for the highest rates (>10^-11^cm^3^/s). Smaller rates, including the ro-vibrational ones, should be generally accurate to within an order of magnitude. As a first application of this data, we show that vibrationally excited water emission observed in evolved stars is expected to be at least partly excited by means of collisions.2008A&A...492..257Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/492/257CatalogResearchIsServedByTAP VizieR generic servicerelated-toVI/119 : High accuracy computed water line list - BT2 (Barber+, 2006)J/A+A/472/1029 : (De)excitation rates of H2O by H2 (Faure+, 2007)J/A+A/493/687 : Rotational excitation of formaldehyde by H2 (Faure+, 2009)J/MNRAS/399/425 : (De)excitation rates of ortho-NH3 and para-NH3 (Faure+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/492/257https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/492/257http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/492/257https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/492/257https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/492/257http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/492/257GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/492/257/levelsEnergy levels of ortho-H2O and para-H2OM[op] [o]rtho- or [p]ara-H2O moleculemeta.id;phys.molcharelevEnergy valuecm**-1phys.energy;phys.atmol.leveldoubleJJ quantum numbermeta.id;meta.mainintKaKa quantum numberphys.atmol.qnintKcKc quantum numberphys.atmol.qnintv1v2v3v1v2v3 quantum numbers (G1)phys.atmol.qnintJ/A+A/492/257/ratesDe-excitation rates of para-H2O and ortho-H2O in collision with electron or H2H2k4.0Collision rate coefficient with H_2_ at 4000Kcm**3.s**-1arith.rate;phys.atmol.collStrengthdoubleH2k5.0Collision rate coefficient with H_2_ at 5000Kcm**3.s**-1arith.rate;phys.atmol.collStrengthdoublelevelsDisplay the levels impliedmeta.ref.urlcharf[1/412] Final levelphys.atmol.final;phys.atmol.levelintM[op] [o]rtho- or [p]ara-H2O moleculemeta.id;phys.molchari[2/413] Initial levelphys.atmol.initial;phys.atmol.levelintek0.2Collision rate coefficient with e at 200Kcm**3.s**-1arith.rate;phys.absorption.coeffdoubleek0.4Collision rate coefficient with e at 400Kcm**3.s**-1arith.rate;phys.absorption.coeffdoubleek0.8Collision rate coefficient with e at 800Kcm**3.s**-1arith.rate;phys.absorption.coeffdoubleek1.2Collision rate coefficient with e at 1200Kcm**3.s**-1arith.rate;phys.absorption.coeffdoubleek1.6Collision rate coefficient with e at 1600Kcm**3.s**-1arith.rate;phys.absorption.coeffdoubleek2.0Collision rate coefficient with e at 2000Kcm**3.s**-1arith.rate;phys.absorption.coeffdoubleek2.5Collision rate coefficient with e at 2500Kcm**3.s**-1arith.rate;phys.absorption.coeffdoubleek3.0Collision rate coefficient with e at 3000Kcm**3.s**-1arith.rate;phys.absorption.coeffdoubleek3.5Collision rate coefficient with e at 3500Kcm**3.s**-1arith.rate;phys.absorption.coeffdoubleek4.0Collision rate coefficient with e at 4000Kcm**3.s**-1arith.rate;phys.absorption.coeffdoubleek5.0Collision rate coefficient with e at 5000Kcm**3.s**-1arith.rate;phys.absorption.coeffdoubleH2k0.2Collision rate coefficient with H_2_ at 200Kcm**3.s**-1arith.rate;phys.atmol.collStrengthdoubleH2k0.4Collision rate coefficient with H_2_ at 400Kcm**3.s**-1arith.rate;phys.atmol.collStrengthdoubleH2k0.8Collision rate coefficient with H_2_ at 800Kcm**3.s**-1arith.rate;phys.atmol.collStrengthdoubleH2k1.2Collision rate coefficient with H_2_ at 1200Kcm**3.s**-1arith.rate;phys.atmol.collStrengthdoubleH2k1.6Collision rate coefficient with H_2_ at 1600Kcm**3.s**-1arith.rate;phys.atmol.collStrengthdoubleH2k2.0Collision rate coefficient with H_2_ at 2000Kcm**3.s**-1arith.rate;phys.atmol.collStrengthdoubleH2k2.5Collision rate coefficient with H_2_ at 2500Kcm**3.s**-1arith.rate;phys.atmol.collStrengthdoubleH2k3.0Collision rate coefficient with H_2_ at 3000Kcm**3.s**-1arith.rate;phys.atmol.collStrengthdoubleH2k3.5Collision rate coefficient with H_2_ at 3500Kcm**3.s**-1arith.rate;phys.atmol.collStrengthdouble