J/A+A/566/L8ivo://CDS.VizieR/J/A+A/566/L8doi:10.26093/cds/vizier.35669008CDSKowalski P.M.2017-06-20T13:17:20Z2014-06-27T14:39:52ZCDS support team

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

cds-question@unistra.fratomic-physicsHydrogen-deficient white dwarfs are characterized by very dense, fluid-like atmospheres of complex physics and chemistry that are still poorly understood. The incomplete description of these atmospheres by the models results in serious problems with the description of spectra of these stars and subsequent difficulties in derivation of their surface parameters. Here, we address the problem of infrared (IR) opacities in the atmospheres of cool white dwarfs by direct ab initio simulations of IR absorption of dense helium. We applied state-of-the-art density functional theory-based quantum molecular dynamics simulations to obtain the time evolution of the induced dipole moment. The IR absorption coefficients were obtained by the Fourier transform of the dipole moment time autocorrelation function.2014A&A...566L...8Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/566/L8CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/566/L8https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/566/L8http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/566/L8https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/566/L8https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/566/L8http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/566/L8GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/566/L8/opacityHelium IR absorption profilesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreq[50/20000] Frequencycm**-1em.freqintAbs1Absorption coefficient at T=1000K (1)phys.absorption.coeffdoubleAbs2Absorption coefficient at T=2000K (1)phys.absorption.coeffdoubleAbs3Absorption coefficient at T=3000K (1)phys.absorption.coeffdoubleAbs4Absorption coefficient at T=4000K (1)phys.absorption.coeffdoubleAbs5Absorption coefficient at T=5000K (1)phys.absorption.coeffdoubleAbs6Absorption coefficient at T=6000K (1)phys.absorption.coeffdoubleAbs7Absorption coefficient at T=7000K (1)phys.absorption.coeffdoubleAbs8Absorption coefficient at T=8000K (1)phys.absorption.coeffdoubleAbs9Absorption coefficient at T=9000K (1)phys.absorption.coeffdoubleAbs10Absorption coefficient at T=10000K(1)phys.absorption.coeffdouble