J/A+A/578/A65ivo://CDS.VizieR/J/A+A/578/A65doi:10.26093/cds/vizier.35780065CDSYang B.Walker K.M.Forrey R.C.Stancil P.C.Balakrishnan N.2015-10-01T16:19:48Z2015-06-05T08:20:19ZCDS support team

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

cds-question@unistra.fratomic-physicsCollisional excitation rate coefficients play an important role in the dynamics of energy transfer in the interstellar medium. In particular, accurate rotational excitation rates are needed to interpret microwave and infrared observations of the interstellar gas for nonlocal thermodynamic equilibrium line formation. Theoretical cross sections and rate coefficients for collisional deexcitation of rotationally excited HF in the vibrational ground state are reported. The quantum-mechanical close-coupling approach implemented in the nonreactive scattering code MOLSCAT was applied in the cross section and rate coefficient calculations on an accurate 2D HF-He potential energy surface. Estimates of rate coefficients for H and H_2_ colliders were obtained from the HF-He collisional data with a reduced-potential scaling approach.2015A&A...578A..65Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/578/A65CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/578/A65https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/578/A65http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/578/A65https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/578/A65https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/578/A65http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/578/A65GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/578/A65/aa_hehfRate coefficientsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJi[2/21] Initial level J valuestat.value;phys.atmol.levelintJf[1/20] Final level J valuephys.atmol.qnintRC1Rotational quenching rate coefficient for T=1Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC2Rotational quenching rate coefficient for T=2Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC5Rotational quenching rate coefficient for T=5Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC10Rotational quenching rate coefficient for T=10Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC20Rotational quenching rate coefficient for T=20Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC30Rotational quenching rate coefficient for T=30Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC40Rotational quenching rate coefficient for T=40Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC50Rotational quenching rate coefficient for T=50Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC60Rotational quenching rate coefficient for T=60Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC70Rotational quenching rate coefficient for T=70Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC80Rotational quenching rate coefficient for T=80Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC90Rotational quenching rate coefficient for T=90Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC100Rotational quenching rate coefficient for T=100Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC150Rotational quenching rate coefficient for T=150Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC200Rotational quenching rate coefficient for T=200Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC300Rotational quenching rate coefficient for T=300Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC400Rotational quenching rate coefficient for T=400Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC500Rotational quenching rate coefficient for T=500Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC600Rotational quenching rate coefficient for T=600Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC700Rotational quenching rate coefficient for T=700Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC800Rotational quenching rate coefficient for T=800Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC900Rotational quenching rate coefficient for T=900Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC1000Rotational quenching rate coefficient for T=1000Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC1500Rotational quenching rate coefficient for T=1500Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC2000Rotational quenching rate coefficient for T=2000Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC2500Rotational quenching rate coefficient for T=2500Kcm**3.s**-1arith.rate;phys.atmol.collisionaldoubleRC3000Rotational quenching rate coefficient for T=3000Kcm**3.s**-1arith.rate;phys.atmol.collisionaldouble