J/MNRAS/548/G469ivo://CDS.VizieR/J/MNRAS/548/G469CDSAntonini A.S.R.Romero A.D.Kepler S.O.2026-04-20T07:49:14Z2026-04-20T08:48:50ZCDS support team

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

cds-question@unistra.frgalaxiesstellar-spectral-typesearly-type-starslate-type-starssupergiant-starswhite-dwarf-starsastronomical-modelsWe study the full evolution of a 1.313M_{sun}_ white dwarf star that descended from a 9M_{sun}_ main-sequence progenitor with an initial metallicity of Z=0.02. Using MESA r24.08.01, we calculate its entire evolution from pre-ZAMS to the WD cooling curve, including both the evolution through 139 thermal pulses and the post-AGB phase. The resulting remnant is an ultramassive H-deficient WD, for which the composition, in mass fraction, is 47.7% ^16^O, 39.7% ^20^Ne, 4.2% ^24^Mg, 3.3% ^23^Na and 0.386% ^12^C -- corresponding to a total mass of 5x10^-3^M_{sun}_ of C --, surrounded by a 1.5x10^-5^M_{sun}_ He layer. We also investigate the effects of fully suppressing the TP-SAGB stage by adopting a high mass-loss rate only after the second dredge-up, and find only minor differences in the final mass and composition. In addition, we calculate models with and without phase separation during the WD stage, estimating a cooling delay of only 16Myr. This is the first ultramassive white dwarf sequence for which both the TP-SAGB and post-AGB stages are calculated and, to our knowledge, the most massive WD model from complete evolution for which cooling times and detailed abundance profiles are published.2026MNRAS.548ag469Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/548/G469CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/548/G469https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/548/G469http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/548/G469https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/548/G469https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/548/G469http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/548/G469GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/MNRAS/548/G469/baselinecooling data for our baseline modelrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlogTeffEffective temperature in log scalelog(K)phys.temperature.effective;instr.scaledoublelogLLuminosity in log scalelog(solLum)phys.luminositydoubleloggSurface gravity in log scalelog(cm.s**-2)phys.gravitydoublelogRRadius in log scalelog(solRad)phys.size.radiusdoubletcoolCooling ageyrtime.agedoublelogPcCentral Pressure in log scalelog(1e-07J.cm**-3)phys.pressuredoublelogrhocCentral density in log scalelog(g.cm**-3)phys.densitydoublelogTcCentral Temperature in log scalelog(K)phys.temperaturedoubleGammacCentral coulomb interaction parameterstat.fit.paramdoubleJ/MNRAS/548/G469/nopscooling data for our model calculated without phase separation (noPS)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlogTeffEffective temperature in log scalelog(K)phys.temperature.effective;instr.scaledoublelogLLuminosity in log scalelog(solLum)phys.luminositydoubleloggSurface gravity in log scalelog(cm.s**-2)phys.gravitydoublelogRRadius in log scalelog(solRad)phys.size.radiusdoubletcoolCooling ageyrtime.agedoublelogPcCentral Pressure in log scalelog(1e-07J.cm**-3)phys.pressuredoublelogrhocCentral density in log scalelog(g.cm**-3)phys.densitydoublelogTcCentral Temperature in log scalelog(K)phys.temperaturedoubleGammacCentral coulomb interaction parameterstat.fit.paramdoubleJ/MNRAS/548/G469/defcooling data for our model calculated with the default Skye regime for one-component plasma fitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlogTeffEffective temperature in log scalelog(K)phys.temperature.effective;instr.scaledoublelogLLuminosity in log scalelog(solLum)phys.luminositydoubleloggSurface gravity in log scalelog(cm.s**-2)phys.gravitydoublelogRRadius in log scalelog(solRad)phys.size.radiusdoubletcoolCooling ageyrtime.agedoublelogPcCentral Pressure in log scalelog(1e-07J.cm**-3)phys.pressuredoublelogrhocCentral density in log scalelog(g.cm**-3)phys.densitydoublelogTcCentral Temperature in log scalelog(K)phys.temperaturedoubleGammacCentral coulomb interaction parameterstat.fit.paramdouble