J/PASP/131/A4002ivo://CDS.VizieR/J/PASP/131/A4002doi:10.26093/cds/vizier.61314002CDSHsiao E.Y.Phillips M.M.Marion G.H.Kirshner R.P.Morrell N.,Sand D.J.Burns C.R.Contreras C.Hoeflich P.Stritzinger M.D.,Valenti S.Anderson J.P.Ashall C.Baltay C.Baron E.Banerjee D.P.K.,Davis S.Diamond T.R.Folatelli G.Freedman W.L.Forster F.,Galbany L.Gall C.Gonzalez-Gaitan S.Goobar A.Hamuy M.Holmbo S.,Kasliwal M.M.Krisciunas K.Kumar S.Lidman C.Lu J.Nugent P.E.,Perlmutter S.Persson S.E.Piro A.L.Rabinowitz D.Roth M.Ryder S.D.,Schmidt B.P.Shahbandeh M.Suntzeff N.B.Taddia F.Uddin S.Wang L.2025-09-09T14:14:56Z2022-07-07T14:00:26ZCDS support team

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

cds-question@unistra.frsupernovaeShifting the focus of Type Ia supernova (SN Ia) cosmology to the near infrared (NIR) is a promising way to significantly reduce the systematic errors, as the strategy minimizes our reliance on the empirical width-luminosity relation and uncertain dust laws. Observations in the NIR are also crucial for our understanding of the origins and evolution of these events, further improving their cosmological utility. Any future experiments in the rest-frame NIR will require knowledge of the SN Ia NIR spectroscopic diversity, which is currently based on a small sample of observed spectra. Along with the accompanying paper, Phillips et al., we introduce the Carnegie Supernova Project-II (CSP-II), to follow-up nearby SNe Ia in both the optical and the NIR. In particular, this paper focuses on the CSP-II NIR spectroscopy program, describing the survey strategy, instrumental setups, data reduction, sample characteristics, and future analyses on the data set. In collaboration with the Harvard-Smithsonian Center for Astrophysics (CfA) Supernova Group, we obtained 661 NIR spectra of 157 SNe Ia. Within this sample, 451 NIR spectra of 90 SNe Ia have corresponding CSP-II follow-up light curves. Such a sample will allow detailed studies of the NIR spectroscopic properties of SNe Ia, providing a different perspective on the properties of the unburned material; the radioactive and stable nickel produced; progenitor magnetic fields; and searches for possible signatures of companion stars.2019PASP..131a4002Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/PASP/131/A4002CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PASP/131/A4002https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/PASP/131/A4002http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/PASP/131/A4002https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/PASP/131/A4002https://vizier.iucaa.in/viz-bin/votable?-source=J/PASP/131/A4002http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/PASP/131/A4002GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/PASP/131/A4002/table1 (Summary of CSP-II NIR Spectroscopy of SNe Ia)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/PASP/131/A4002/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/PASP/131/A4002/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/PASP/131/A4002/table1?GETtext/xml+votable180.050000true19.674-7.44436110.0055555555555555566/24 165 188 425 928 930 2230 2311 4288 4369 4534 7606 8196 8198 8203 8249 8323 8346 8482 8532 8763 8971 10363 10379 10438 11434 12406 12497 15847 16612 16667 17031 17567 17899 18011 18854 19217 19524 19619 19993-19994 20032 20372 20712 21010 21175 21264 21833 22685 22943 23027 23077 23211 24227 24926 24957 25051 25070 25170 25206 25229 25353 25520 25675 25715 25749 25770 25782 25950 26175 26190 26451 26686 26791 27205 27239 27384 27418 27654 27738 27849 27926 27960 27966 28067 28230 28234 28241 28251 28255 28294 28455 28509 29717 30100 30865 31348 31537 33387 33487 33522 33681 33704 33971 34161 34531 34534 34884 35052 35484 35717 35885 36128 36287 36714 37062 37429 37509 37537 37579 38621 38675 38704 38723 38956 39664 40234 40424 40506 40805 40825 42006 43339 43447 43873 43877 43896 43991 45016 45040 45126 45277 45746 45960 46010 46104 46513 46636 46642 47122 47255 47382 49139https://cdsarc.cds.unistra.fr/viz-bin/moc/J/PASP/131/A4002?format=asciidefaultJ/PASP/131/A4002/table1Summary of CSP-II NIR Spectroscopy of SNe IarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN Namemeta.id;meta.maincharONameOther namemeta.idcharNspNumber of NIR Spectrameta.numberintSample[C,P ] Sample (1)src.samplecharzHost heliocentric redshift (2)src.redshiftfloatn_z[de] Note on z (3)meta.notecharRefClassification by FIRE (4)meta.code.classchar_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.mainSimbadNameSimbad column added by the CDSmeta.idcharnullable