J/A+A/641/A177ivo://CDS.VizieR/J/A+A/641/A177doi:10.26093/cds/vizier.36410177CDSMeza N.Anderson J.P.2021-09-09T08:59:31Z2020-11-20T10:11:28ZCDS support team

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

cds-question@unistra.frsupernovaechemical-abundancesThe mass of synthesised radioactive material is an important power source for all supernova (SN) types. In addition, the difference of ^56^Ni yields statistics are relevant to constrain progenitor paths and explosion mechanisms. Here, we re-estimate the nucleosynthetic yields of ^56^Ni for a well-observed and well-defined sample of stripped-envelope SNe (SE-SNe) in a uniform manner. This allows us to investigate whether the observed hydrogen-rich-stripped-envelope (SN II-SE SN) ^56^Ni separation is due to real differences between these SN types or because of systematic errors in the estimation methods. We compiled a sample of well-observed SE-SNe and measured ^56^Ni masses through three different methods proposed in the literature: first, the classic "Arnett rule"; second the more recent prescription of Khatami & Kasen (2019ApJ...878...56K) and third using the tail luminosity to provide lower limit ^56^Ni masses. These SE-SN distributions were then compared to those compiled in this article. Results. Arnett's rule, as previously shown, gives ^56^Ni masses for SE-SNe that are considerably higher than SNe II. While for the distributions calculated using both the Khatami & Kasen (2019ApJ...878...56K) prescription and Tail ^56^Ni masses are offset to lower values than "Arnett values", their ^56^Ni distributions are still statistically higher than that of SNe II. Our results are strongly driven by a lack of SE-SN with low ^56^Ni masses, that are, in addition, strictly lower limits. The lowest SE-SN ^56^Ni mass in our sample is of 0.015M_{sun}_, below which are more than 25% of SNe II. We conclude that there exist real, intrinsic differences in the mass of synthesised radioactive material between SNe II and SE-SNe (types IIb, Ib, and Ic). Any proposed current or future CC SN progenitor scenario and explosion mechanism must be able to explain why and how such differences arise or outline a bias in current SN samples yet to be fully explored.2020A&A...641A.177Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/641/A177CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/641/A177https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/641/A177http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/641/A177https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/641/A177https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/641/A177http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/641/A177GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/641/A177/tablea1 (SE SNe used in this work)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/641/A177/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/641/A177/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/641/A177/tablea1?GETtext/xml+votable180.050000true148.853228169.02047310.005555555555555556Cone search capability for table J/A+A/641/A177/tablec1 (SN II taken from Anderson (2019A&A...628A...7A))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/641/A177/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/641/A177/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/641/A177/tablec1?GETtext/xml+votable180.050000true40.937537.31166670.0055555555555555566/34 37 393 611 1006 1033 2372 2395 2452 2530 3861 4490 5061 5629 5715 6037 7173 7386 7606 7743 8256 8359 9437 10589 10723 10892 10905 10991 11027 11197 11395 11434 11492 12298 12641 12758 13330 13522 15592-15593 16441 16479 17594 17637 17727 17767 18123 18376 18398 18637 18854 19584 19614 19627 19661 19710 19954 20000 20720 21127 21198 22613 22751 22953 23206 23827 24915 25079 25127 25153 25344 25438 25513 25742 25788 26217 26234 26303 26535 26914 26955 27514-27515 27588 27596 27643 27861 27914 28167 28173 28529 29348 30194 31107 31352 31945 33094 33228 33271 33795 33958 34361 34694 34777 35993 36081 36210 36377 36489 36785 36789 36908 37429 37436 38350 38623 38657 38786 38817 38956 39008 39108 40210 40267 40659 40789 40819 40980 42025 42923 43233 43325 44726 46004 46041 46477 47187 47212 47460 49097https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/641/A177?format=asciidefaultJ/A+A/641/A177/tablea1SE SNe used in this workrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSNSN namemeta.id;meta.maincharTypeSN typesrc.classcharHostHost galaxy namemeta.id.parentcharHostzHost heliocentric Redshift (1)src.redshift;pos.heliocentricdoubleHostdLHost luminosity distanceMpcpos.distancefloatMWE(B-V)Milky Way redenningmagphot.color.excessfloatHostE(B-V)? Host galaxy redenning (2)magphot.color.excessfloatnullablet0Explosion epoch, MJDdtime.epochdoubleRefsReferences (3)meta.ref;pos.framecharSimbadSimbad 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.mainJ/A+A/641/A177/tablea2Peak parameters of our BVRIYJH light curves and the ^56^Ni masses obtained as described in Sect. 3recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSNSN namemeta.id;meta.maincharTypeSN typesrc.classchartpTime peakdtime.epochfloatLpPeak luminosity (in 10+41erg/s unit) (1)1e+36Wphys.luminosityfloatMArnett^56^Ni mass limit with Arnett method (1)solMassphys.massfloatMK+K^56^Ni mass limit with Khatami & Kasen (2019ApJ...878...56K) method (1)solMassphys.massfloatMTail? ^56^Ni mass limit with method (1)solMassphys.massfloatnullableJ/A+A/641/A177/tablec1SN II taken from Anderson (2019A&A...628A...7A)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSNSN namemeta.id;meta.maincharHostSN host galaxy namemeta.id.parentcharHostdLHost galaxy luminosity distances, from NEDMpcpos.distancefloatMNickelNickel mass (1)phys.massfloatHostAVHost galaxy extinction values (2)magobs.atmos.extinctionfloatRefReferences for nickel masses and host galaxy extinction values (3)meta.refcharSimbadSimbad 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