J/MNRAS/486/5785ivo://CDS.VizieR/J/MNRAS/486/5785doi:10.26093/cds/vizier.74865785CDSSiebert M.R.Foley R.J.Jones D.O.Angulo R.Davis K.Duarte A.,Strasburger E.Conlon M.Kazmi N.Nishimoto R.Schubert M.Sun L.,Tippens R.2024-08-19T20:18:41Z2023-11-02T15:30:00ZCDS support team

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

cds-question@unistra.frsupernovaeWe present a public, open-source relational data base (we name kaepora) containing a sample of 4975 spectra of 777 Type Ia supernovae (SNe Ia). Since we draw from many sources, we significantly improve the spectra by inspecting these data for quality, removing galactic emission lines and cosmic rays, generating variance spectra, and correcting for the reddening caused by both MW and host-galaxy dust. With our data base, we organize this homogenized data set by 56 unique categories of SN-specific and spectrum-specific metadata. With kaepora, we produce composite spectra of subpopulations of SNe Ia and examine how spectral features correlate with various SN properties. These composite spectra reproduce known correlations with phase, light-curve shape, and host-galaxy morphology. With our large data set, we are also able to generate fine-grained composite spectra simultaneously over both phase and light-curve shape. The colour evolution of our composite spectra is consistent with other SN Ia template spectra, and the spectral properties of our composite spectra are in rough agreement with these template spectra with some subtle differences. We investigate the spectral differences of SNe Ia that occur in galaxies with varying morphologies. Controlling for light-curve shape, which is highly correlated with host-galaxy morphology, we find that SNe Ia residing in late-type and early-type galaxies have similar spectral properties at multiple epochs. However for SNe Ia in these different environments, their spectra appear to have Ca ii near-infrared triplet features that have slightly different strengths. Although this is apparent in the composite spectra and there is some difference in the populations as seen by individual spectra, this difference is not large enough to indicate differences in the underlying populations. All individual spectra and metadata are available in our open-source data base kaepora along with the tools developed for this investigation to facilitate future investigations of SN Ia properties.2019MNRAS.486.5785Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/486/5785CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttps://msiebert1.github.io/kaepora : KAEPORA Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/486/5785https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/486/5785http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/486/5785https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/486/5785https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/486/5785http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/486/5785GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/486/5785/sources (List of supernovae)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/486/5785/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/486/5785/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/486/5785/sources?GETtext/xml+votable180.050000true50.7458333-37.21333330.0055555555555555566/0 14 32 34 195 224 226 248 361 425 449 626 659 689 697 928 943 948 986 1164 1406 1527 1572 1593 1677 1682 1690 1700-1701 1706 1708 1796 2030 2038 2142 2169 2184 2199 2227 2230 2232 2251 2254 2265 2269 2306 2340 2343 2347 2353 2376 2378-2379 2391 2397 2404 2409 2412 2473 2530 2533 2608 2621 2627 2641 2752 3072 3075 3393 3415 3421 3446 3937 4061 4114 4149 4204 4312 4391 4401 4416 4447 4449 4516 4577 4583 4619 4660 4684 4706 4719 4807 4935 4988-4989 4993 5006 5092 5095 5100 5129 5139 5171 5281 5342 5354 5400 5415 5429 5508 5515 5618 5632 5639 5680 5739 5836 5905 5965 5970 5975 5982 5990 5995 6000 6010 6058 6062 6082 6101 6114 6154 6178 6286 6501 6549 6585 6877 6908 6922 6936 6944 6962 6968 6983 7004 7044 7050 7091 7104 7123 7166 7198 7213 7241 7250 7313 7345 7369 7450 7488 7550 7606 7651 7656 7659 7674 7681 7715 7741 7747 7754 7783 7923 8017 8029 8064 8072 8213 8267 8271 8334 8341 8398 8403 8435 8479 8522 8526 8556-8557 8626 8658 8667 8702 8705 8717 8728 8763 8922 8926-8927 9036 9050 9098 9136 9178 9287 9328 9374 9439 9443 9449 9453 9455 9470-9471 9560 9578 9614 9623 9640 9698 9751 9794 9840 9946 10144 10175 10191 10203 10206 10232 10302-10303 10379 10391 10397-10398 10400-10401 10428 10434 10438-10439 10454 10531 10563 10575 10628 10650 10659 10734 10767 10789 10800 10817 10827 10858 10978 10984 11064 11100 11138 11158 11181 11245-11246 11263 11273 11390 11392 11434 11483 11496 11568 11641 11672 11693 11698 11703 11709 11713 11738 11824 11886 11900 11939 12103 12123 12171 12199 12367 12455 12496 12567 12585 12622 12734 13313 13350 13380 13399 13426-13427 13459 13505 13514 13528 13536 13550 13575 13695 13907 13911 14009 14018 14127 14148 14293 14733 14834 14882 14907 15056 15085 15093 15096 15548 15885 15954-15955 16026 16292 16535 16568 16598 16633 16690 16765 16852 17032 17152 17197 17207 17237 17239 17274 17278 17340 17398 17401 17438 17500 17525 17614 17660 17662 17670 17736 17741 17743 17761 17812 17817-17818 17831 17840 17905 17920 18009 18011 18016-18017 18061 18093 18206 18214 18243 18272 18296 18324-18325 18394 18410 18480 18535 18581 18607 18735 18753 18841 18854 18860 18895 18928-18929 18939 19051 19062 19084 19094 19102 19117 19120 19227 19241 19257 19269 19283 19298 19321 19387 19425 19438 19506 19515 19551 19554 19560 19581 19619 19729 19777 19782 19797 19848 19900 19958 19983 19990 20011 20014 20046 20090 20140 20237 20279 20283 20318 20343 20358 20370-20371 20373-20374 20699 20904 21041 21086 21109 21138 21300 21857 21941 22011 22425 22599 22650 22826 22956 22963 23013 23023 23028 23077 23157 23160 23179 23182 23193 23197 23219 23270 23294 23296 23395 23405 23828 23860 23916 24052 24121 24131 24637 24716 24878 24917 24920 24949 24969 25033 25078-25079 25141 25158 25230 25333 25344 25439 25491 25513 25520 25565 25615 25634-25635 25686 25698 25769-25770 25778 25850 25888-25889 25893 25963 25982 26024 26043-26044 26052 26117 26169 26189 26268 26271 26283 26289 26304 26336 26390 26392 26395 26432 26474 26500-26501 26563 26575 26584 26697 26742 26851 26866 26990-26991 27079 27105 27172 27174 27227 27348 27367 27420 27426 27491 27512 27514 27564 27568 27634 27714 27722 27724 27728 27730 27738 27761 27767 27772-27773 27907 27910 27912 27914 27918 27945 27998 28035 28040 28064 28075 28089-28090 28112 28149 28167 28224 28249 28251 28253 28276 28278 28294 28299 28330 28353 28356 28366 28368 28413-28414 28453 28498 28564 28572 28579 28593 28619 29439 30037 30044 30055 30196 31218 31230 31313 31425 31534 31628 31880 32129 32136 32187 32307 32340 32561 32569 32602 32611 32620 34229 34326 34361 34493 34531 34534 34540 34554 35674 35719 35966 36045 36131 36287 36412 36430 36450 36473 36560 36645-36646 36662 36669 36805 36855 36919 37299 37429 37668 38664 38822 39627 39677 39836 39863 40145 40234 40252 40278 40294 40337 40379-40380 40599 40712 40810 40882 40906 43262 43339 43877-43878 43977 43995 44000 44005 44026 44359 44555 44587 44603 44624 44649 44660 44896 44915 45036 45041 45418 46812 46882 47014 47064 47079 48075 48248 48302 48344 48459 48625 48665 48676 48706 48722 48898 49109 49129https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/486/5785?format=asciidefaultJ/MNRAS/486/5785/sourcesList of supernovaeSNameSimbad Namemeta.idcharSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSupernova namemeta.id;meta.maincharRAJ2000? Simbad right ascension (J2000)pos.eq.ra;meta.mainnullableDEJ2000? Simbad declination (J2000)pos.eq.dec;meta.mainnullableJ/MNRAS/486/5785/table1Full spectral samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSupernova namemeta.id;meta.maincharMJD? Modified Julian Date (JD-2400000.5)dtime.epochfloatnullablePhase? Phase of spectradtime.phasefloatnullableS/N? Signal to noise ratiostat.snrfloatnullablelambda1Wavelenght range (minimum)0.1nminstr.bandwidthintlambda2Wavelenght range (maximum)0.1nmem.wlintRefsReferences for the spectra (1)meta.ref;pos.frameint