J/MNRAS/414/1617ivo://CDS.VizieR/J/MNRAS/414/1617doi:10.26093/cds/vizier.74141617CDSArsenijevic V.2024-07-14T20:14:54Z2012-03-22T16:55:51ZCDS support team

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

cds-question@unistra.frsupernovaegalaxy-classification-systemsType Ia supernovae (SNe Ia) spectra are compared using the coefficient of the largest wavelet scale in their decomposition. Two distinct subgroups have been identified, and their occurrence is discussed with regards to the use of SNe Ia as cosmological probes. Apart from the group of normal SNe, another trend characterized by intrinsically redder colours consists of many different SN events, which exhibit diverse properties. These include the interaction with the circumstellar material and the existence of a specific shell structure in or surrounding the SN ejecta or super-Chandrasekhar mass progenitors. Compared with normal objects, these SNe may violate the standard width-luminosity correction. This could influence the cosmological results if these are all calibrated equally, as their fraction among SNe Ia is not negligible when performing precision cosmology. Using the largest wavelet scale coefficient in combination with long-baseline B-I colours, we show how to disentangle the SN intrinsic colour from the part that corresponds to the reddening as a result of dust extinction in the host galaxy in the SALT2 colour parameter c.2011MNRAS.414.1617Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/414/1617CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/414/1617https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/414/1617http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/414/1617https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/414/1617https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/414/1617http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/414/1617GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/414/1617/table1 (List of SNe Ia used in our study)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/414/1617/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/414/1617/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/414/1617/table1?GETtext/xml+votable180.050000true188.62320832.19980560.0055555555555555566/626 2227 2251 2379 4447 4719 4993 5095 5975 6062 6178 6936 7044 7241 8064 8522 8763 9794 11246 11424 11496 11672 12455 15955 17340 17614 17662 17817 18061 18206 18324 18895 19298 19777 19958 20014 20046 24920 25769 25778 25960 26271 26336 26500 26914 27426 27512 27728 27773 27918 27945 27947 28035 28075 28167 28453 31230 31628 32129 32307 32340 32569 32620 34361 34540 36863 39677 40252 40379 43262 44000 44026 44915 46882https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/414/1617?format=asciiOpticaldefaultJ/MNRAS/414/1617/table1List of SNe Ia used in our studyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSNSN name (NNNNaa)meta.id;meta.maincharzRedshiftsrc.redshiftfloatx1SALT2 light curve shape parameter x1stat.fit.paramfloate_x1rms uncertainty on x1stat.errorfloatcSALT2 colour parameter (~E(B-V)) (Guy et al., 2007A&A...466...11G)phot.color.reddFreefloate_crms uncertainty on cstat.errorfloatchi2{chi}^2^/d.o.f. ratiostat.fit.chi2floatwlc15Wavelet coefficient from scale 15 at central wavelength (1)stat.fit.paramfloate_wlc15rms uncertainty on wltcoeff15stat.errorfloatwlc*15Wavelet coefficient from scale 15 at central wavelength obtained in the interval [4000-6000{AA}] (1)stat.fit.paramfloate_wlc*15rms uncertainty on wlc*15stat.errorfloatRefReferences, in refs.dat filemeta.ref;meta.filecharSimbadSimbad column added by the CDSchar_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/MNRAS/414/1617/refsReferencesBibCodeBibCodemeta.bib.bibcodecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar