J/ApJ/886/27ivo://CDS.VizieR/J/ApJ/886/27doi:10.26093/cds/vizier.18860027CDSWagle G.A.Ray A.Dev A.Raghu A.2021-07-05T11:37:32Z2021-04-29T13:12:17ZCDS support team

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

cds-question@unistra.frsupernovaegiant-starsstellar-spectral-typesextinctiontwo-color-diagramsastronomical-modelsvisible-astronomybroad-band-photometryinfrared-sourcesWe present the evolution of massive star progenitors of supernovae of type IIP. We take the example of the nearby and well-studied SN2013ej. We explore how convective overshoot affects the stellar structure, surface abundances, and effective temperature of massive stars, using the Modules for Experiments in Stellar Astrophysics. In particular, models with moderate overshoot (f=0.02-0.031) show the presence of blue loops in the Hertzsprung-Russell diagram with a red to blue excursion (log_10_[Teff/K] from <3.6 to >4.0) and transition back to red, during the core helium-burning phase. Models with overshoot outside this range of f values kept the star in the red supergiant state throughout the post-helium-ignition phases. The surface CNO abundance shows enrichment post-main-sequence and again around the time when helium is exhausted in the core. These evolutionary changes in surface CNO abundance are indistinguishable in the currently available observations due to large observational uncertainties. However, these observations may distinguish between the ratio of surface nitrogen to oxygen at different evolutionary stages of the star. We also compare the effects of convective overshoot on various parameters related to likelihood of explosion of a star as opposed to collapse to a black hole. These parameters are the compactness parameter, M_4_, and {mu}_4_. The combination {mu}_4_xM_4_, and {mu}_4_ have similar variations with f and both peak at f=0.032. We find that all of our 13M_{sun}_ models are likely to explode.2019ApJ...886...27Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/886/27CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/96/269 : Stellar Models from 0.8 to 120 Msolar (Schaller+, 1992)J/A+A/466/277 : VLT-FLAMES survey of massive stars (Hunter+, 2007)J/A+A/496/841 : VLT-FLAMES survey of massive stars (Hunter+, 2009)J/MNRAS/395/1409 : Type II-P SN progenitor constraints (Smartt+, 2009)J/A+A/545/A43 : HII regions in NGC 628 and NGC 6946 (Cedres+, 2012)J/ApJ/749/177 : Yellow and red supergiants in the LMC (Neugent+, 2012)J/AJ/154/102 : LMC blue supergiants spectroscopic obs. (Urbaneja+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/886/27https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/886/27http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/886/27https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/886/27https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/886/27http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/886/27GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/886/27/table1 (Observational data of LMC supergiants for the Hertzsprung-Russell diagram (HRD))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/886/27/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/886/27/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/886/27/table1?GETtext/xml+votable180.050000true82.6671319-67.27719920.0055555555555555565/8269 8274 8275 8278 8280 6/33052 33053 33054 33075 33088 33090 33091 33092 33094 33095 33106 33107 33124 33125 33126 33128https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/886/27?format=asciiOpticalInfrareddefaultJ/ApJ/886/27/table1Observational data of LMC supergiants for the Hertzsprung-Russell diagram (HRD)SimbadNameSimbad column added by the CDSmeta.idcharNameStar name if 2MASS emptymeta.idcharE_Av[0.03/0.05]? Lower uncertainty in Avmagstat.error;stat.maxfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identifier (JHHMMSSss+DDMMSSs)meta.id;meta.maincharVmag[11.34/14.81]? Visual magnitude (apparent)magphot.mag;em.opt.VfloatnullableU-B[-0.46/0.2]? U-B color indexmagphot.color;em.opt.U;em.opt.BfloatnullableB-V[-0.09/2.15]? B-V color indexmagphot.color;em.opt.B;em.opt.VfloatnullableV-R[0.04/1.26]? V-R color indexmagphot.color;em.opt.V;em.opt.RfloatnullableSpTypeSpectral type from Refsrc.spTypecharlogTeff[3.5/4.4]? Log of effective temperaturelog(K)phys.temperature.effectivefloatnullablelogL[4.2/5.1]? Log of luminositylog(solLum)phys.luminosityfloatnullablee_logTeff[1.6/2.8]? Lower uncertainty in logTefflog(K)stat.error;phys.temperature.effectivefloatnullableE_logTeff[1.6/2.9]? Upper uncertainty in logTefflog(K)stat.error;stat.maxfloatnullablee_logL[3.2/3.6]? Lower uncertainty in logLlog(solLum)stat.errorfloatnullableE_logL[3.2/3.6]? Upper uncertainty in logLlog(solLum)stat.error;stat.maxfloatnullableAv[0.13/0.96]? Extinction coefficientmagphys.absorption.coefffloatnullablee_Av[0.03/0.04]? Upper uncertainty in Avmagstat.errorfloatnullableBC[-2.41/-0.01]? Bolometric correctionmagphot.mag.bcfloatnullablee_BC[0.01/0.04]? (Symmetrical) uncertainty in bolometric correctionmagstat.errorfloatnullableClassClassification of star (according to Ref) (1)meta.code.class;src.classcharRefSource of data (2)meta.bibchar2MDisplay the 2MASS data (Cutri+ 2003, II/246) within 3"meta.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