J/ApJ/795/142ivo://CDS.VizieR/J/ApJ/795/142doi:10.26093/cds/vizier.17950142CDSGonzalez-Gaitan S.Hsiao E.Y.Pignata G.Forster F.Gutierrez C.P.,Bufano F.Galbany L.Folatelli G.Phillips M.M.Hamuy M.,Anderson J.P.De Jaeger T.2017-07-18T15:23:37Z2017-05-31T15:28:06ZCDS support team

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

cds-question@unistra.frsupernovaeWe present a new photometric identification technique for SN 1991bg-like type Ia supernovae (SNe Ia), i.e., objects with light curve characteristics such as later primary maxima and the absence of a secondary peak in redder filters. This method is capable of selecting this sub-group from the normal type Ia population. Furthermore, we find that recently identified peculiar sub-types such as SNe Iax and super-Chandrasekhar SNe Ia have photometric characteristics similar to 91bg-like SNe Ia, namely, the absence of secondary maxima and shoulders at longer wavelengths, and can also be classified with our technique. The similarity of these different SN Ia sub-groups perhaps suggests common physical conditions. This typing methodology permits the photometric identification of peculiar SNe Ia in large upcoming wide-field surveys either to study them further or to obtain a pure sample of normal SNe Ia for cosmological studies.2014ApJ...795..142Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/795/142CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/112/2408 : Light Curves of 29 SNe (Hamuy+ 1996)J/ApJ/700/331 : Light curves of type Ia supernovae (CfA3) (Hicken+, 2009)J/AJ/139/519 : Carnegie supernova project. SNe Ia (Contreras+, 2010)J/ApJS/190/418 : Light curves for 165 SNe (Ganeshalingam+, 2010)J/AJ/142/156 : The CSP (DR2): photometry of SNe Ia (Stritzinger+, 2011)J/ApJS/200/12 : CfA4: light curves for 94 type Ia SNe (Hicken+, 2012)J/A+A/568/A22 : Joint analysis of the SDSS-II and SNLS SNe Ia (Betoule+, 2014)J/ApJS/219/13 : SNe Ia light curves for the LSQ-CSP sample (Walker+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/795/142https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/795/142http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/795/142https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/795/142https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/795/142http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/795/142GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/795/142/table2 (Nearby SNe Ia Used in This Study Requiring Enough Light Curve Coverage)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/795/142/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/795/142/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/795/142/table2?GETtext/xml+votable180.050000true341.729791721.62613890.005555555555555556Cone search capability for table J/ApJ/795/142/table3 (Nearby CC SNe Used in This Study Requiring Enough Light Curve Coverage)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/795/142/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/795/142/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/795/142/table3?GETtext/xml+votable180.050000true184.716791714.41216670.0055555555555555566/224 393 425 611 626 697 928 1593 1677 1700 1701 1725 1796 2121 2142 2227 2230 2232 2251 2252 2254 2265 2340 2347 2353 2372 2379 2388 2409 2412 2452 2473 2608 3393 3415 3519 3861 4114 4181 4401 4416 4447 4577 4583 4684 4719 4807 4935 4989 5004 5061 5100 5192 5492 5629 5632 5639 5655 5680 5715 5919 5975 5979 5995 6048 6062 6098 6178 6585 6936 6962 6968 7104 7241 7369 7522 7523 7606 7659 7681 7743 7747 7923 8064 8072 8195 8256 8267 8341 8376 8385 8403 8556 8667 8719 9136 9338 9437 9449 9560 9698 9702 9794 9840 10203 10232 10379 10391 10397 10563 10637 10705 10767 10789 10816 10858 10978 10988 10991 11027 11064 11071 11181 11246 11424 11434 11435 11492 11496 11939 12367 12452 12455 13313 13320 13350 13427 13459 13505 13514 13518 14009 14834 15056 15548 15592 15593 15954 15955 16120 16479 16612 16690 16852 17152 17197 17239 17340 17401 17500 17614 17637 17662 17670 17736 17741 17767 17812 17818 17828 17840 17999 18004 18011 18014 18016 18017 18061 18097 18206 18214 18296 18324 18394 18398 18535 18685 18689 18712 18735 18753 18854 18859 18895 18913 19029 19031 19051 19062 19087 19092 19094 19108 19185 19227 19241 19283 19457 19515 19523 19551 19554 19709 19726 20000 20011 20014 20046 20090 20140 20152 20237 20279 20283 20370 20720 21047 21220 21300 21857 21916 22599 22751 22826 23013 23023 23144 23179 23187 23193 23197 23203 23206 23214 23219 23294 23405 23828 24131 24716 24920 25033 25078 25079 25333 25344 25403 25438 25491 25513 25516 25521 25599 25615 25742 25769 25770 25889 25960 26117 26124 26210 26234 26268 26271 26303 26336 26395 26500 26515 26548 26563 26693 26872 26914 26955 27250 27312 27344 27348 27367 27426 27470 27491 27512 27514 27515 27564 27596 27643 27728 27738 27761 27861 27910 27914 27918 27945 27947 28035 28075 28089 28112 28149 28167 28249 28253 28299 28353 28368 28453 28464 28498 28579 30036 30039 30044 30052 31218 31230 31352 31359 31518 31522 31628 31945 32136 32340 32440 32561 32569 32602 32620 33094 33235 33271 33839 34326 34361 34492 34493 34501 34534 34540 35629 35844 35935 35993 36081 36131 36253 36287 36391 36662 36750 36785 36805 36863 37299 37436 37559 37668 38613 38657 38664 38786 38853 38956 38985 39008 39327 39836 40379 40648 40893 43262 43662 43713 43827 43855 43877 44000 44026 44660 44822 44915 45041 45418 45500 45983 46811 46882 46999 47170 47217 48075 48302 48665 48898 49122https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/795/142?format=asciidefaultJ/ApJ/795/142/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReferencemeta.ref;pos.framecharBibcodeReference bibcodemeta.bib.bibcodecharComComment on referencemeta.notecharJ/ApJ/795/142/table2Nearby SNe Ia Used in This Study Requiring Enough Light Curve CoverageSimbadNameSimbad column added by the CDSmeta.idcharRefReferences (listed in refs.dat file)meta.refcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSNe Ia namemeta.id;meta.maincharTypeSNe Ia typesrc.classcharChi2IaReduced quality of fit to normal templatestat.fit.chi2floatChi291bgReduced quality of fit to 91bg templatestat.fit.chi2float_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/ApJ/795/142/table3Nearby CC SNe Used in This Study Requiring Enough Light Curve CoverageSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSNe Ia namemeta.id;meta.maincharTypeSNe Ia typesrc.classcharChi2IaReduced quality of fit to normal templatestat.fit.chi2floatChi291bgReduced quality of fit to 91bg templatestat.fit.chi2floatRefReferences (listed in refs.dat file)meta.refchar_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