J/ApJ/813/96ivo://CDS.VizieR/J/ApJ/813/96doi:10.26093/cds/vizier.18130096CDSSong L.Balakrishnan N.WalkerK.M.Stancil P.C.Thi W.F.,Kamp I.,van der Avoird A.Groenenboom G.C.2017-01-23T22:00:00Z2016-03-18T13:00:10ZCDS support team

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

cds-question@unistra.fratomic-physicsWe present calculated rate coefficients for ro-vibrational transitions of CO in collisions with H atoms for a gas temperature range of 10K<=T<=3000K, based on the recent three-dimensional ab initio H-CO interaction potential of Song et al. (2013JPCA..117.7571S). Rate coefficients for ro-vibrational v=1,j=0-30->v'=0,j' transitions were obtained from scattering cross sections previously computed with the close-coupling (CC) method by Song et al. (2015JChPh.142t4303S). Combining these with the rate coefficients for vibrational v=1-5->v'<v quenching obtained with the infinite-order sudden approximation, we propose a new extrapolation scheme that yields the rate coefficients for ro-vibrational v=2-5,j=0-30->v',j' de-excitation. Cross sections and rate coefficients for ro-vibrational v=2,j=0-30->v'=1,j' transitions calculated with the CC method confirm the effectiveness of this extrapolation scheme. Our calculated and extrapolated rates are very different from those that have been adopted in the modeling of many astrophysical environments. The current work provides the most comprehensive and accurate set of ro-vibrational de-excitation rate coefficients for the astrophysical modeling of the H-CO collision system. The application of the previously available and new data sets in astrophysical slab models shows that the line fluxes typically change by 20%-70% in high temperature environments (800K) with an H/H_2_ ratio of 1; larger changes occur for lower temperatures.2015ApJ...813...96Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/813/96CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/492/257 : Collisional excitation of water in warm media (Faure+, 2008)J/A+A/432/369 : Leiden Atomic and Molecular Database (LAMDA) (Schoeier+, 2005)J/A+AS/117/561 : Rovibrational dipole matrix elements for CO (Hure+ 1996)J/A+AS/117/557 : Einstein coefficients for CO transitions (Chandra+ 1996)J/ApJS/95/535 : Infrared CO line list for X 1{Sigma}+ state (Goorvitch, 1994)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/813/96https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/813/96http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/813/96https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/813/96https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/813/96http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/813/96GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/813/96/table1Rate coefficients from close-coupling (CC) calculations for ro-vibrational transitions from v=1,j=0-30 to v'=0,j' in the temperature range T=10-3000KrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintj1levrotational level in v=1 vibration levelphys.mol.qnintj0levrotational level in v=0 vibration levelphys.mol.qnintrdrc10kro-vibrational de-excitation rate coeff at 10Kcm**3.s**-1arith.ratedoublerdrc20kro-vibrational de-excitation rate coeff at 20Kcm**3.s**-1arith.ratedoublerdrc30kro-vibrational de-excitation rate coeff at 30Kcm**3.s**-1arith.ratedoublerdrc40kro-vibrational de-excitation rate coeff at 40Kcm**3.s**-1arith.ratedoublerdrc50kro-vibrational de-excitation rate coeff at 50Kcm**3.s**-1arith.ratedoublerdrc60kro-vibrational de-excitation rate coeff at 60Kcm**3.s**-1arith.ratedoublerdrc70kro-vibrational de-excitation rate coeff at 70Kcm**3.s**-1arith.ratedoublerdrc80kro-vibrational de-excitation rate coeff at 80Kcm**3.s**-1arith.ratedoublerdrc90kro-vibrational de-excitation rate coeff at 90Kcm**3.s**-1arith.ratedoublerdrc100kro-vibrational de-excitation rate coeff at 100Kcm**3.s**-1arith.ratedoublerdrc200kro-vibrational de-excitation rate coeff at 200Kcm**3.s**-1arith.ratedoublerdrc300kro-vibrational de-excitation rate coeff at 300Kcm**3.s**-1arith.ratedoublerdrc500kro-vibrational de-excitation rate coeff at 500Kcm**3.s**-1arith.ratedoublerdrc700kro-vibrational de-excitation rate coeff at 700Kcm**3.s**-1arith.ratedoublerdrc1000kro-vibrational de-excitation rate coeff at 1000Kcm**3.s**-1arith.ratedoublerdrc1500kro-vibrational de-excitation rate coeff at 1500Kcm**3.s**-1arith.ratedoublerdrc2000kro-vibrational de-excitation rate coeff at 2000Kcm**3.s**-1arith.ratedoublerdrc2500kro-vibrational de-excitation rate coeff at 2500Kcm**3.s**-1arith.ratedoublerdrc3000kro-vibrational de-excitation rate coeff at 3000Kcm**3.s**-1arith.ratedoubleJ/ApJ/813/96/table2Rate coefficients from close-coupling (CC) calculations for ro-vibrational transitions from v=2,j=0-30 to v'=1,j' in the temperature range T=10-3000KrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintj1levrotational level in v=2 vibration levelphys.mol.qnintj0levrotational level in v=1 vibration levelphys.mol.qnintrdrc10kro-vibrational de-excitation rate coeff at 10Kcm**3.s**-1arith.ratedoublerdrc20kro-vibrational de-excitation rate coeff at 20Kcm**3.s**-1arith.ratedoublerdrc30kro-vibrational de-excitation rate coeff at 30Kcm**3.s**-1arith.ratedoublerdrc40kro-vibrational de-excitation rate coeff at 40Kcm**3.s**-1arith.ratedoublerdrc50kro-vibrational de-excitation rate coeff at 50Kcm**3.s**-1arith.ratedoublerdrc60kro-vibrational de-excitation rate coeff at 60Kcm**3.s**-1arith.ratedoublerdrc70kro-vibrational de-excitation rate coeff at 70Kcm**3.s**-1arith.ratedoublerdrc80kro-vibrational de-excitation rate coeff at 80Kcm**3.s**-1arith.ratedoublerdrc90kro-vibrational de-excitation rate coeff at 90Kcm**3.s**-1arith.ratedoublerdrc100kro-vibrational de-excitation rate coeff at 100Kcm**3.s**-1arith.ratedoublerdrc200kro-vibrational de-excitation rate coeff at 200Kcm**3.s**-1arith.ratedoublerdrc300kro-vibrational de-excitation rate coeff at 300Kcm**3.s**-1arith.ratedoublerdrc500kro-vibrational de-excitation rate coeff at 500Kcm**3.s**-1arith.ratedoublerdrc700kro-vibrational de-excitation rate coeff at 700Kcm**3.s**-1arith.ratedoublerdrc1000kro-vibrational de-excitation rate coeff at 1000Kcm**3.s**-1arith.ratedoublerdrc1500kro-vibrational de-excitation rate coeff at 1500Kcm**3.s**-1arith.ratedoublerdrc2000kro-vibrational de-excitation rate coeff at 2000Kcm**3.s**-1arith.ratedoublerdrc2500kro-vibrational de-excitation rate coeff at 2500Kcm**3.s**-1arith.ratedoublerdrc3000kro-vibrational de-excitation rate coeff at 3000Kcm**3.s**-1arith.ratedouble