J/A+A/573/A89ivo://CDS.VizieR/J/A+A/573/A89doi:10.26093/cds/vizier.35730089CDSMagic Z.Weiss A.Asplund M.2015-05-22T08:27:05Z2014-12-23T08:26:39ZCDS support team

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

cds-question@unistra.frastronomical-modelsstellar-atmosphereslate-type-starsWe investigate the relation between 1D atmosphere models that rely on the mixing length theory and models based on full 3D radiative hydrodynamic (RHD) calculations to describe convection in the envelopes of late-type stars. The adiabatic entropy value of the deep convection zone, s_bot_, and the entropy jump, {Delta}s, determined from the 3D RHD models, are matched with the mixing length parameter, {alpha}_MLT_, from 1D hydrostatic atmosphere models with identical microphysics (opacities and equation-of-state). We also derive the mass mixing length, {alpha}_m_, and the vertical correlation length of the vertical velocity, C[V_z_,V_z_], directly from the 3D hydrodynamical simulations of stellar subsurface convection.2015A&A...573A..89Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/573/A89CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/557/A26 : STAGGER-grid of 3D stellar models. I. (Magic+, 2013)J/A+A/560/A8 : STAGGER-grid of 3D stellar models. II. (Magic+, 2013)J/A+A/573/A90 : STAGGER-grid of 3D stellar models. III. (Magic+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/573/A89https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/573/A89http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/573/A89https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/573/A89https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/573/A89http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/573/A89GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/573/A89/tablea1Stellar parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTeff[3935/7053] Effective temperatureKphys.temperature.effectivefloatlogg[1.5/5] Surface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H][-4/0.5] Metallicitylog(Sun)phys.abund.Zfloatlgrbot[0.04/4.23] Logarithmic bottom density log({rho}_bot_), in 10^-7^g/cm^3^log(dg.m**-3)phys.densitydoublelgTbot[0.49/4.27] Logarithmic bottom temperature log(T_bot_)log(K)phys.temperaturedoublelgPbot[0.49/4.27] Logarithmic bottom thermodynamic pressure log(gP_th_^bot^), in 10^5^dyne/cm^2^log(10000Pa)phys.pressuredoublesbot[1.06/2.76] Entropy at the bottom s_bot_, in 10^9^erg/g/KhJ.g**-1.K**-1stat.paramdoubleDsEntropy jump {Delta}s, in 10^+9^erg/g/KhJ.g**-1.K**-1stat.paramdoubledsrmsMaximal rms-entropy {delta}s_rms_^peak^%stat.paramdoubledrrmsMaximal rms-density {delta}{rho}_rms_^peak^%stat.paramdoubledVzrmsMaximal rms-velocity {delta}V_z,rms_^peak^km/sstat.paramdoublea(sbot)[0/2.4] Mixing length parameter {alpha}_MLT_^sbot^stat.paramdoublea(Ds)[0/2.9] Mixing length parameter {alpha}_MLT_^{Delta}s^stat.paramdoubleam[0/7.9] Mass mixing length {alpha}_m_stat.paramdoubleW(Vz)/HP[0/2.1] Correlation length W(V_z_)/H_P_stat.paramdouble