J/A+A/430/1139ivo://CDS.VizieR/J/A+A/430/1139doi:10.26093/cds/vizier.34301139CDSReese C.Stoecklin T.Voronin A.Rayez J.C.2005-03-10T10:42:00Z2005-03-10T11:41:53ZCDS support team

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

cds-question@unistra.fratomic-physicsWe report Close Coupling calculations of the rotational transitions induced in collisions between HF molecules and He atoms. We consider transitions for levels up to J=9 and for temperatures up to 300K. We use a new global 3D potential energy surface which we proposed recently and is the best available at the moment. This surface exhibits two minima associated both with linear geometries (V=-43.70cm^-1^ for He-HF and V=-25.88cm^-1^ for He-FH). Close Coupling calculations are performed in the collision energy 10^-6^ to 2000cm^-1^ interval. Our results validate the estimate, by Neufeld et al. (1997ApJ...488L.141N), of the abundance of HF in the interstellar medium which was detected recently.2005A&A...430.1139Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/430/1139CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/430/1139https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/430/1139http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/430/1139https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/430/1139https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/430/1139http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/430/1139GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/430/1139/dataRotational de-excitation rate coefficients (tables 1 and 2 of paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.intJiInitial rotational stateintJfFinal rotational stateintk(T)1rate coefficient for T=0.1Kcm**3.s**-1.mol**-1doublek(T)2rate coefficient for T=1Kcm**3.s**-1.mol**-1doublek(T)3rate coefficient for T=10Kcm**3.s**-1.mol**-1doublek(T)4rate coefficient for T=30Kcm**3.s**-1.mol**-1doublek(T)5rate coefficient for T=50Kcm**3.s**-1.mol**-1doublek(T)6rate coefficient for T=80Kcm**3.s**-1.mol**-1doublek(T)7rate coefficient for T=100Kcm**3.s**-1.mol**-1doublek(T)8rate coefficient for T=200Kcm**3.s**-1.mol**-1doublek(T)9rate coefficient for T=300Kcm**3.s**-1.mol**-1doubleJ/A+A/430/1139/table3Energies of HF rotational levels in the ground vibrational levelJRotational levelintprimaryEEnergycm**-1floatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.int