J/A+A/508/355ivo://CDS.VizieR/J/A+A/508/355doi:10.26093/cds/vizier.35080355CDSBertelli G.Nasi E.Girardi L.Marigo P.2010-04-25T12:28:46Z2010-03-16T13:57:16ZCDS support team

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

cds-question@unistra.frstellar-evolutionary-modelsapparent-magnitudechemical-abundancesWe extend our theoretical computations for low-mass stars to intermediate-mass and massive stars, for which few databases exist in the literature. Evolutionary tracks and isochrones are computed for initial masses 2.50-20M_{sun}_ for a grid of 37 chemical compositions with metal content Z between 0.0001 and 0.070 and helium content Y between 0.23 and 0.40 to enable users to obtain isochrones for ages as young as about 10^7^ years and to simulate stellar populations with different helium-to-metal enrichment laws. The Padova stellar evolution code is identical to that used in the first paper of this series. Synthetic TP-AGB models allow stellar tracks and isochrones to be extended until the end of the thermal pulses along the AGB. We provide software tools for the bidimensional interpolation (in Y and Z) of the isochrones from very old ages down to about 10^7^ years. This lower limit depends on chemical composition. The extension of the blue loops and the instability strip of Cepheid stars are compared and the Cepheid mass-discrepancy is discussed. The location of red supergiants in the H-R diagram is in good agreement with the evolutionary tracks for masses from 10 to 20M_{sun}_. Tracks and isochrones are available in tabular form for the adopted grid of chemical compositions in the extended plane Z-Y in three photometric systems. An interactive web interface allows users to obtain isochrones of any chemical composition inside the provided Z-Y range and also to simulate stellar populations with different Y(Z) helium-to-metal enrichment laws.2009A&A...508..355Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/508/355CatalogResearchIsServedByTAP VizieR generic servicerelated-toVI/96 : Evolutionary Sequences (Fagotto+ 1993-96)J/A+AS/106/275 : Theoretical isochrones (Bertelli+ 1994)J/A+AS/141/371 : Low-mass star evolutionary tracks & isochrones (Girardi+ 2000)J/MNRAS/387/105 : Isochrone database for single+binary-star SSPs (Li+, 2008)http://stev.oapd.inaf.it/YZVAR : Complete data-base Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/508/355https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/508/355http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/508/355https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/508/355https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/508/355http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/508/355GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/508/355/table1Combinations of Z and Y of the computed tracksrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintZ[0.0001/0.070] Initial metallicity (G1)phys.abund.ZfloatY23Filename for Y=0.23 in iso subdirectorymeta.id;meta.filecharY26Filename for Y=0.26 in iso subdirectorymeta.id;meta.filecharY30Filename for Y=0.30 in iso subdirectorymeta.id;meta.filecharY34Filename for Y=0.34 in iso subdirectorymeta.id;meta.filecharY40Filename for Y=0.40 in iso subdirectorymeta.id;meta.filecharY46Filename for Y=0.46 in iso subdirectorymeta.id;meta.filecharJ/A+A/508/355/tracksStellar tracks listrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintZ[0.0001/0.070] Initial metallicity (G1)phys.abund.ZfloatY[0.23/0.46] Initial helium abundance (G2)phys.abund.YfloatMass[0.49/20.0] Initial MasssolMassphys.massfloatMSFilename of Main Sequence tracksmeta.id;meta.filecharHBFilename of Horizontal Branch tracksmeta.id;meta.filecharAGBFilename of Asymptotic Giant Branch tracksmeta.id;meta.filechar