J/ApJ/858/28ivo://CDS.VizieR/J/ApJ/858/28doi:10.26093/cds/vizier.18580028CDSViani L.S.Basu S.J.O. J MBonaca A.Chaplin W.J.2019-05-06T15:49:03Z2019-04-25T14:17:11ZCDS support team

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

cds-question@unistra.frmetallicityastronomical-modelsStellar models typically use the mixing-length approximation as a way to implement convection in a simplified manner. While conventionally the value of the mixing-length parameter, {alpha}, used is the solar-calibrated value, many studies have shown that other values of {alpha} are needed to properly model stars. This uncertainty in the value of the mixing-length parameter is a major source of error in stellar models and isochrones. Using asteroseismic data, we determine the value of the mixing-length parameter required to properly model a set of about 450 stars ranging in logg, Teff, and [Fe/H]. The relationship between the value of {alpha} required and the properties of the star is then investigated. For Eddington atmosphere, non-diffusion models, we find that the value of {alpha} can be approximated by a linear model, in the form of {alpha}/{alpha}_{sun}_=5.426-0.101, log(g)-1.071, log(Teff)+0.437([Fe/H]). This process is repeated using a variety of model physics, as well as compared with previous studies and results from 3D convective simulations.2018ApJ...858...28Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/858/28CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)J/ApJ/749/152 : Asteroseismic analysis of 22 solar-type stars (Mathur+, 2012)J/A+A/557/A26 : STAGGER-grid of 3D stellar models. I. (Magic+, 2013)J/ApJS/215/19 : APOKASC catalog of Kepler red giants (Pinsonneault+, 2014)J/ApJ/808/187 : Metallicities of KIC stars without planets (Buchhave+, 2015)J/A+A/573/A89 : STAGGER-grid of 3D stellar models. III. (Magic+, 2015)J/MNRAS/452/2127 : Fundamental param. of Kepler stars (Silva Aguirre+, 2015)J/A+A/601/A67 : Kepler solar-type stars modeling (Creevey+, 2017)J/ApJ/835/172 : Kepler asteroseismic LEGACY sample. I. (Lund+, 2017)J/ApJS/229/30 : Revised properties of Q1-17 Kepler targets (Mathur+, 2017)J/ApJS/233/23 : APOKASC catalog of KIC dwarfs and subgiants (Serenelli+, 2017)J/ApJ/835/173 : Kepler asteroseismic LEGACY sample. II. (Silva Aguirre+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/858/28https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/858/28http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/858/28https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/858/28https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/858/28http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/858/28GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/858/28/table3 (The stars in the study)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/858/28/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/858/28/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/858/28/table3?GETtext/xml+votable180.050000true290.888423937.08936940.0055555555555555565/3645 3646 3690 3692 3694 3695 3732 3733 3734 3740 3741 3743 3776 3779 3782 3783 3785 3792 6/14573 14575 14577 14578 14579 14588 14590 14591 14733 14734 14735 14738 14744 14746 14751 14752 14753 14754 14756 14757 14759 14765 14767 14772 14773 14774 14792 14794 14816 14818 14819 14824 14825 14827 14828 14830 14915 14917 14918 14919 14921 14923 14924 14925 14926 14941 14942 14943 14945 14946 14947 14948 14950 14951 14952 14955 14958 14959 14968 14969 14971 15041 15044 15057 15060 15061 15062 15108 15109 15110 15112 15113 15115 15120 15121 15123 15124 15126 15127 15136 15137 15138 15144 15145 15146 15149 15153 15155 15156 15157 15158 15172 15173 15174 15178 15232https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/858/28?format=asciidefaultJ/ApJ/858/28/table3The stars in the studyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKIC[1430163/12508433] The star's KIC numbermeta.idintnumax[253/4190] The nu_max_ value (1)uHzem.freq;src.vardoublee_numax[3/731] Uncertainty in numaxuHzstat.errorfloatDnu[17.3/173.3] The {Delta}{nu} value (1)uHzem.freq;src.varfloate_Dnu[0.03/8.6] Uncertainty in DnuuHzstat.errorfloatTeff[4756/6875] Effective temperature from Mathur+ (2017, J/ApJS/229/30)Kphys.temperature.effectiveinte_Teff[49/58] Uncertainty in TeffKstat.error;phys.temperature.effectiveint[Fe/H][-0.7/0.5] Metallicity from Buchhave & Latham (2015, J/ApJ/808/187)phys.abund.Zfloate_[Fe/H][0.08] Uncertainty in [Fe/H]stat.error;phys.abund.Fefloatalpha[1/2.7] Mixing length value (2)stat.value;phys.sizefloate_alpha[0.05/1.7] Uncertainty in alphastat.error;pos.eq.rafloatKCatDisplay data from Serenelli+, 2017, J/ApJS/233/23 ; Mathur+, 2017, J/ApJS/229/30 and Buchhave+, 2015, J/ApJ/808/187meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main