J/MNRAS/520/L21ivo://CDS.VizieR/J/MNRAS/520/L21doi:10.26093/cds/vizier.75209021CDSBarkhudaryan L.V.2024-10-18T15:21:54Z2023-01-30T14:56:58ZCDS support team

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

cds-question@unistra.frsupernovaegalaxiesstellar-distancevisible-astronomyIn this Letter, using classified 197 supernovae (SNe) Ia, we perform an analysis of their height distributions from the disc in edge-on spirals and investigate their light-curve (LC) decline rates ({Delta}m_15_). We demonstrate, for the first time, that 91T- and 91bg-like subclasses of SNe Ia are distributed differently toward the plane of their host disc. The average height from the disc and its comparison with scales of thin/thick disc components gives a possibility to roughly estimate the SNe Ia progenitor ages: 91T-like events, being at the smallest heights, originate from relatively younger progenitors with ages of about several 100 Myr, 91bg-like SNe, having the highest distribution, arise from progenitors with significantly older ages ~10 Gyr, and normal SNe Ia, which distributed between those of the two others, are from progenitors of about one up to ~10 Gyr. We find a correlation between LC decline rates and SN Ia heights, which is explained by the vertical age gradient of the stellar population in discs and a sub-Chandrasekhar mass white dwarf explosion models, where the {Delta}m_15_ parameter is a progenitor age indicator.2023MNRAS.520L..21Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/520/L21CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/520/L21https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/520/L21http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/520/L21https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/520/L21https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/520/L21http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/520/L21GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/520/L21/tablea5 (Data on 197 SNe Ia and their 196 hosts)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/520/L21/tablea5?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/520/L21/tablea5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/520/L21/tablea5?GETtext/xml+votable180.050000true197.84920833.41044440.0055555555555555566/976 991 1677 1725 2254 2379 2412 2590 3415 4447 5115 5394 5400 5515 5680 5739 5975 6114 6178 6532 7017 7031 7233 7424 7606 7681 7701 7754 7786 8211 8391 8435 8526 9311 9374 9471 9484 9578 9640 9833 9840 9874 9881 9984 10118 10363 10378 10422 10454 10576 10696 10978 11042 11138 11568 11905 12455 12509 12585 13514 13523 13581 13982 14009 14018 14913 15887 16535 16584 16633 16928 17515 17614 17899 18049 18709 18753 19084 19217 19298 20010 20029 20208 20374 20922 21228 21239 21263 21300 22956 23028 23160 23270 23294 23405 23820 24966 25051 25476 25565 25615 26121 26123 26175 26237 26395 26402 26474 26697 27008 27109 27513 27728 27910 27926 27947 28067 28149 28234 28241 28414 28444 28453 28455 28498 28515 29763 30052 31218 31230 31560 32136 32162 32187 32338 32611 33471 33824 34361 34694 35075 35126 35467 35717 36189 37541 37543 38704 38822 40380 43878 44007 44026 44511 45443 45746 45748 46568 47031 47382 48248 48459 48487 48894 48922https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/520/L21?format=asciiOpticaldefaultJ/MNRAS/520/L21/tablea5Data on 197 SNe Ia and their 196 hostsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintr_TypeSource of SN subclassmeta.notecharUsnSN projected radius U along the plane of its host discarcsecphys.angSize;srcfloatVsnSN height V from the planearcsecphys.angSize;srcfloatdm15? SN light curve (LC) decline ratemagphot.mag;arith.difffloatnullablee_dm15? Error of SN LC decline ratemagstat.errorfloatnullabler_dm15Source of SN LC decline ratemeta.ref;pos.framecharGalSN host galaxy namemeta.id.parentcharDistHost galaxy distanceMpcpos.distancefloatMTypeHost galaxy morphological typesrc.morph.typecharu_MType[:?] Uncertainty flag on morphology (2)meta.notechar_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnullableSNSupernova (SN) namemeta.id;meta.maincharTypeSN subclass (1)src.classcharR25Host galaxy semimajor R_25_ axisarcsecphys.angSize.smajAxisfloatZ25Host galaxy semiminor Z_25_ axisarcsecphys.angSize.sminAxisfloatSimbadNameSimbad column added by the CDSmeta.idcharnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainnullable