J/ApJS/74/291ivo://CDS.VizieR/J/ApJS/74/291doi:10.26093/cds/vizier.20740291CDSItoh N.Kojo K.Nakagawa M.1998-03-15T14:53:06Z1998-03-15T15:51:19ZCDS support team

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

cds-question@unistra.fratomic-physicsstellar-atmospheric-opacityThe pure Coulomb free-free Gaunt factors of the dense high-temperature carbon and oxygen plasmas are calculated by using the accurate relativistic cross section and are compared with the Gaunt factors derived by using Sommerfeld's exact nonrelativistic cross section. A wide range of electron degeneracy is accurately taken into account. Effects from resonances in the free electron density of states are not included. Dramatic deviations from the nonrelativistic results are found for high-temperature cases. Results are presented in the form of extensive tables to facilitate applications.1990ApJS...74..291Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/74/291CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/63/661 : Relativistic Free-Free Gaunt Factor (Nakagawa+ 1987)J/ApJ/382/636 : Rosseland mean free-free Gaunt factor (Itoh+ 1991)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/74/291https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/74/291http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/74/291https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/74/291https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/74/291http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/74/291GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/74/291/table1*<<g_ff>>, degeneracy parameter {eta}=-6.0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLogu*Log u, u=(h_bar_*{omega})/kTphys.energyfloatElem*Element for Gaunt factor calculationphys.atmol.elementcharG-4.0? Gaunt factor, log({gamma}^2^)= -4.0phys.gauntFactordoublenullableG-3.5? Gaunt factor, log({gamma}^2^)= -3.5phys.gauntFactordoublenullableG-3.0? Gaunt factor, log({gamma}^2^)= -3.0phys.gauntFactordoublenullableG-2.5? Gaunt factor, log({gamma}^2^)= -2.5phys.gauntFactordoublenullableG-2.0? Gaunt factor, log({gamma}^2^)= -2.0phys.gauntFactordoublenullableG-1.5? Gaunt factor, log({gamma}^2^)= -1.5phys.gauntFactordoublenullableG-1.0? Gaunt factor, log({gamma}^2^)= -1.0phys.gauntFactordoublenullableG-0.5? Gaunt factor, log({gamma}^2^)= -0.5phys.gauntFactordoublenullableG+0.0? Gaunt factor, log({gamma}^2^)= 0.0phys.gauntFactordoublenullableG+0.5? Gaunt factor, log({gamma}^2^)= 0.5phys.gauntFactordoublenullableJ/ApJS/74/291/table2<<g_ff>>, degeneracy parameter {eta}=-2.0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLogu*Log u, u=(h_bar_*{omega})/kTphys.energyfloatElem*Element for Gaunt factor calculationphys.atmol.elementcharG-4.0? Gaunt factor, log({gamma}^2^)= -4.0phys.gauntFactordoublenullableG-3.5? Gaunt factor, log({gamma}^2^)= -3.5phys.gauntFactordoublenullableG-3.0? Gaunt factor, log({gamma}^2^)= -3.0phys.gauntFactordoublenullableG-2.5? Gaunt factor, log({gamma}^2^)= -2.5phys.gauntFactordoublenullableG-2.0? Gaunt factor, log({gamma}^2^)= -2.0phys.gauntFactordoublenullableG-1.5? Gaunt factor, log({gamma}^2^)= -1.5phys.gauntFactordoublenullableG-1.0? Gaunt factor, log({gamma}^2^)= -1.0phys.gauntFactordoublenullableG-0.5? Gaunt factor, log({gamma}^2^)= -0.5phys.gauntFactordoublenullableG+0.0? Gaunt factor, log({gamma}^2^)= 0.0phys.gauntFactordoublenullableG+0.5? Gaunt factor, log({gamma}^2^)= 0.5phys.gauntFactordoublenullableJ/ApJS/74/291/table3<<g_ff>>, degeneracy parameter {eta}= 0.0G-0.5? Gaunt factor, log({gamma}^2^)= -0.5phys.gauntFactordoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLogu*Log u, u=(h_bar_*{omega})/kTphys.energyfloatElem*Element for Gaunt factor calculationphys.atmol.elementcharG-4.0? Gaunt factor, log({gamma}^2^)= -4.0phys.gauntFactordoublenullableG-3.5? Gaunt factor, log({gamma}^2^)= -3.5phys.gauntFactordoublenullableG-3.0? Gaunt factor, log({gamma}^2^)= -3.0phys.gauntFactordoublenullableG-2.5? Gaunt factor, log({gamma}^2^)= -2.5phys.gauntFactordoublenullableG-2.0? Gaunt factor, log({gamma}^2^)= -2.0phys.gauntFactordoublenullableG-1.5? Gaunt factor, log({gamma}^2^)= -1.5phys.gauntFactordoublenullableG-1.0? Gaunt factor, log({gamma}^2^)= -1.0phys.gauntFactordoublenullableG+0.0? Gaunt factor, log({gamma}^2^)= 0.0phys.gauntFactordoublenullableG+0.5? Gaunt factor, log({gamma}^2^)= 0.5phys.gauntFactordoublenullableJ/ApJS/74/291/table4<<g_ff>>, degeneracy parameter {eta}= 1.0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLogu*Log u, u=(h_bar_*{omega})/kTphys.energyfloatElem*Element for Gaunt factor calculationphys.atmol.elementcharG-4.0? Gaunt factor, log({gamma}^2^)= -4.0phys.gauntFactordoublenullableG-3.5? Gaunt factor, log({gamma}^2^)= -3.5phys.gauntFactordoublenullableG-3.0? Gaunt factor, log({gamma}^2^)= -3.0phys.gauntFactordoublenullableG-2.5? Gaunt factor, log({gamma}^2^)= -2.5phys.gauntFactordoublenullableG-2.0? Gaunt factor, log({gamma}^2^)= -2.0phys.gauntFactordoublenullableG-1.5? Gaunt factor, log({gamma}^2^)= -1.5phys.gauntFactordoublenullableG-1.0? Gaunt factor, log({gamma}^2^)= -1.0phys.gauntFactordoublenullableG-0.5? Gaunt factor, log({gamma}^2^)= -0.5phys.gauntFactordoublenullableG+0.0? Gaunt factor, log({gamma}^2^)= 0.0phys.gauntFactordoublenullableG+0.5? Gaunt factor, log({gamma}^2^)= 0.5phys.gauntFactordoublenullableJ/ApJS/74/291/table5<<g_ff>>, degeneracy parameter {eta}= 2.0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLogu*Log u, u=(h_bar_*{omega})/kTphys.energyfloatElem*Element for Gaunt factor calculationphys.atmol.elementcharG-4.0? Gaunt factor, log({gamma}^2^)= -4.0phys.gauntFactordoublenullableG-3.5? Gaunt factor, log({gamma}^2^)= -3.5phys.gauntFactordoublenullableG-3.0? Gaunt factor, log({gamma}^2^)= -3.0phys.gauntFactordoublenullableG-2.5? Gaunt factor, log({gamma}^2^)= -2.5phys.gauntFactordoublenullableG-2.0? Gaunt factor, log({gamma}^2^)= -2.0phys.gauntFactordoublenullableG-1.5? Gaunt factor, log({gamma}^2^)= -1.5phys.gauntFactordoublenullableG-1.0? Gaunt factor, log({gamma}^2^)= -1.0phys.gauntFactordoublenullableG-0.5? Gaunt factor, log({gamma}^2^)= -0.5phys.gauntFactordoublenullableG+0.0? Gaunt factor, log({gamma}^2^)= 0.0phys.gauntFactordoublenullableG+0.5? Gaunt factor, log({gamma}^2^)= 0.5phys.gauntFactordoublenullableJ/ApJS/74/291/table6<<g_ff>>, degeneracy parameter {eta}= 3.0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLogu*Log u, u=(h_bar_*{omega})/kTphys.energyfloatElem*Element for Gaunt factor calculationphys.atmol.elementcharG-4.0? Gaunt factor, log({gamma}^2^)= -4.0phys.gauntFactordoublenullableG-3.5? Gaunt factor, log({gamma}^2^)= -3.5phys.gauntFactordoublenullableG-3.0? Gaunt factor, log({gamma}^2^)= -3.0phys.gauntFactordoublenullableG-2.5? Gaunt factor, log({gamma}^2^)= -2.5phys.gauntFactordoublenullableG-2.0? Gaunt factor, log({gamma}^2^)= -2.0phys.gauntFactordoublenullableG-1.5? Gaunt factor, log({gamma}^2^)= -1.5phys.gauntFactordoublenullableG-1.0? Gaunt factor, log({gamma}^2^)= -1.0phys.gauntFactordoublenullableG-0.5? Gaunt factor, log({gamma}^2^)= -0.5phys.gauntFactordoublenullableG+0.0? Gaunt factor, log({gamma}^2^)= 0.0phys.gauntFactordoublenullableG+0.5? Gaunt factor, log({gamma}^2^)= 0.5phys.gauntFactordoublenullableJ/ApJS/74/291/table7<<g_ff>>, degeneracy parameter {eta}= 5.0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLogu*Log u, u=(h_bar_*{omega})/kTphys.energyfloatElem*Element for Gaunt factor calculationphys.atmol.elementcharG-4.0? Gaunt factor, log({gamma}^2^)= -4.0phys.gauntFactordoublenullableG-3.5? Gaunt factor, log({gamma}^2^)= -3.5phys.gauntFactordoublenullableG-3.0? Gaunt factor, log({gamma}^2^)= -3.0phys.gauntFactordoublenullableG-2.5? Gaunt factor, log({gamma}^2^)= -2.5phys.gauntFactordoublenullableG-2.0? Gaunt factor, log({gamma}^2^)= -2.0phys.gauntFactordoublenullableG-1.5? Gaunt factor, log({gamma}^2^)= -1.5phys.gauntFactordoublenullableG-1.0? Gaunt factor, log({gamma}^2^)= -1.0phys.gauntFactordoublenullableG-0.5? Gaunt factor, log({gamma}^2^)= -0.5phys.gauntFactordoublenullableG+0.0? Gaunt factor, log({gamma}^2^)= 0.0phys.gauntFactordoublenullableG+0.5? Gaunt factor, log({gamma}^2^)= 0.5phys.gauntFactordoublenullableJ/ApJS/74/291/table8<<g_ff>>, degeneracy parameter {eta}=10.0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLogu*Log u, u=(h_bar_*{omega})/kTphys.energyfloatElem*Element for Gaunt factor calculationphys.atmol.elementcharG-4.0? Gaunt factor, log({gamma}^2^)= -4.0phys.gauntFactordoublenullableG-3.5? Gaunt factor, log({gamma}^2^)= -3.5phys.gauntFactordoublenullableG-3.0? Gaunt factor, log({gamma}^2^)= -3.0phys.gauntFactordoublenullableG-2.5? Gaunt factor, log({gamma}^2^)= -2.5phys.gauntFactordoublenullableG-2.0? Gaunt factor, log({gamma}^2^)= -2.0phys.gauntFactordoublenullableG-1.5? Gaunt factor, log({gamma}^2^)= -1.5phys.gauntFactordoublenullableG-1.0? Gaunt factor, log({gamma}^2^)= -1.0phys.gauntFactordoublenullableG-0.5? Gaunt factor, log({gamma}^2^)= -0.5phys.gauntFactordoublenullableG+0.0? Gaunt factor, log({gamma}^2^)= 0.0phys.gauntFactordoublenullableG+0.5? Gaunt factor, log({gamma}^2^)= 0.5phys.gauntFactordoublenullableJ/ApJS/74/291/table9<<g_ff>>, degeneracy parameter {eta}=20.0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLogu*Log u, u=(h_bar_*{omega})/kTphys.energyfloatElem*Element for Gaunt factor calculationphys.atmol.elementcharG-4.0? Gaunt factor, log({gamma}^2^)= -4.0phys.gauntFactordoublenullableG-3.5? Gaunt factor, log({gamma}^2^)= -3.5phys.gauntFactordoublenullableG-3.0? Gaunt factor, log({gamma}^2^)= -3.0phys.gauntFactordoublenullableG-2.5? Gaunt factor, log({gamma}^2^)= -2.5phys.gauntFactordoublenullableG-2.0? Gaunt factor, log({gamma}^2^)= -2.0phys.gauntFactordoublenullableG-1.5? Gaunt factor, log({gamma}^2^)= -1.5phys.gauntFactordoublenullableG-1.0? Gaunt factor, log({gamma}^2^)= -1.0phys.gauntFactordoublenullableG-0.5? Gaunt factor, log({gamma}^2^)= -0.5phys.gauntFactordoublenullableG+0.0? Gaunt factor, log({gamma}^2^)= 0.0phys.gauntFactordoublenullableG+0.5? Gaunt factor, log({gamma}^2^)= 0.5phys.gauntFactordoublenullableJ/ApJS/74/291/table10<<g_ff>>, degeneracy parameter {eta}=40.0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLogu*Log u, u=(h_bar_*{omega})/kTphys.energyfloatElem*Element for Gaunt factor calculationphys.atmol.elementcharG-4.0? Gaunt factor, log({gamma}^2^)= -4.0phys.gauntFactordoublenullableG-3.5? Gaunt factor, log({gamma}^2^)= -3.5phys.gauntFactordoublenullableG-3.0? Gaunt factor, log({gamma}^2^)= -3.0phys.gauntFactordoublenullableG-2.5? Gaunt factor, log({gamma}^2^)= -2.5phys.gauntFactordoublenullableG-2.0? Gaunt factor, log({gamma}^2^)= -2.0phys.gauntFactordoublenullableG-1.5? Gaunt factor, log({gamma}^2^)= -1.5phys.gauntFactordoublenullableG-1.0? Gaunt factor, log({gamma}^2^)= -1.0phys.gauntFactordoublenullableG-0.5? Gaunt factor, log({gamma}^2^)= -0.5phys.gauntFactordoublenullableG+0.0? Gaunt factor, log({gamma}^2^)= 0.0phys.gauntFactordoublenullableG+0.5? Gaunt factor, log({gamma}^2^)= 0.5phys.gauntFactordoublenullable