J/MNRAS/494/4426ivo://CDS.VizieR/J/MNRAS/494/4426doi:10.26093/cds/vizier.74944426CDSSmith M.Sullivan M.Wiseman P.Kessler R.Scolnic D.Brout D.,D'Andrea C.B.Davis T.M.Foley R.J.Frohmaier C.Galbany L.,Gupta R.R.Gutierrez C.P.Hinton S.R.Kelsey L.Lidman C.Macaulay E.,Moller A.Nichol R.C.Nugent P.Palmese A.Pursiainen M.Sako M.,Swann E.Thomas R.C.Tucker B.E.Vincenzi M.Carollo D.Lewis G.F.,Sommer N.E.Abbott T.M.C.Aguena M.Allam S.Avila S.Bertin E.,Bhargava S.Brooks D.Buckley-Geer E.Burke D.L.Carnero Rosell A.,Carrasco Kind M.Costanzi M.da Costa L.N.De Vicente J.Desai S.,Diehl H.T.Doel P.Eifler T.F.Everett S.Flaugher B.Fosalba P.,Frieman J.Garcia-Bellido J.Gaztanaga E.Glazebrook K.Gruen D.,Gruendl R.A.Gschwend J.Gutierrez G.Hartley W.G.Hollowood D.L.,Honscheid K.James D.J.Krause E.Kuehn K.Kuropatkin N.Lima M.,MacCrann N.Maia M.A.G.Marshall J.L.Martini P.Melchior P.,Menanteau F.Miquel R.Paz-Chinchon F.Plazas A.A.Romer A.K.,Roodman A.Rykoff E.S.Sanchez E.Scarpine V.Schubnell M.Serrano S.,Sevilla-Noarbe I.Suchyta E.Swanson M.E.C.Tarle G.Thomas D.,Tucker D.L.Varga T.N.Walker A.R.(the DES Collaboration)2024-08-21T20:14:13Z2023-07-31T08:02:41ZCDS support team

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

cds-question@unistra.frsupernovaesurveysredshiftedgalaxiesphotometryvisible-astronomyWe present improved photometric measurements for the host galaxies of 206 spectroscopically confirmed type Ia supernovae discovered by the Dark Energy Survey Supernova Program (DES-SN) and used in the first DES-SN cosmological analysis. For the DES-SN sample, when considering a 5D (z, x_1_, c, {alpha}, {beta}) bias correction, we find evidence of a Hubble residual 'mass step', where SNe Ia in high-mass galaxies (>10^10^M_{sun}_) are intrinsically more luminous (after correction) than their low-mass counterparts by {gamma}=0.040+/-0.019mag. This value is larger by 0.031mag than the value found in the first DES-SN cosmological analysis. This difference is due to a combination of updated photometric measurements and improved star formation histories and is not from host-galaxy misidentification. When using a 1D (redshift-only) bias correction the inferred mass step is larger, with {gamma}=0.066+/-0.020mag. The 1D-5D {gamma} difference for DES-SN is 0.026+/-0.009mag. We show that this difference is due to a strong correlation between host galaxy stellar mass and the x_1_ component of the 5D distance-bias correction. Including an intrinsic correlation between the observed properties of SNe Ia, stretch and colour, and stellar mass in simulated SN Ia samples, we show that a 5D fit recovers {gamma} with -9mmag bias compared to a +2mmag bias for a 1D fit. This difference can explain part of the discrepancy seen in the data. Improvements in modelling correlations between galaxy properties and SN is necessary to ensure unbiased precision estimates of the dark energy equation of state as we enter the era of LSST.2020MNRAS.494.4426Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/494/4426CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)J/ApJ/874/150 : The first 3yrs of DES-SN (DES-SN3YR) (Brout+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/494/4426https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/494/4426http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/494/4426https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/494/4426https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/494/4426http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/494/4426GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/494/4426/tableb1 (Host galaxy photometric measurements and derived properties for the DES-SN sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/494/4426/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/494/4426/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/494/4426/tableb1?GETtext/xml+votable180.050000true53.6462169-28.12700110.0055555555555555565/4422 8868 8983 6/17669 17671 17677 17679-17680 17682-17683 17686 17692-17694 17712 17735 17741 17745-17748 17750-17753 17756 35382 35385 35387-35390 35481 35927 35931 35953 35956-35957 35959 36098 36104 36106-36107 36128https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/494/4426?format=asciiOpticaldefaultJ/MNRAS/494/4426/tableb1Host galaxy photometric measurements and derived properties for the DES-SN sampleSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSupernova name (DESNNANaaaa)meta.id;meta.maincharSNIDSupernova identifiermeta.idintzRedshift (1)src.redshiftfloatgmag? g-band AB magnitude (2)magphot.mag;em.opt.Bfloatnullablee_gmag? Error on gmagmagstat.error;phot.magfloatnullablermag? r-band AB magnitude (2)magphot.mag;em.opt.Rfloatnullablee_rmag? Error on rmagmagstat.error;phot.magfloatnullableimag? i-band AB magnitude (2)magphot.mag;em.opt.Ifloatnullablee_imag? Error on imagmagstat.error;phot.magfloatnullablezmag? z-band AB magnitude (2)magphot.mag;em.opt.Ifloatnullablee_zmag? Error on zmagmagstat.error;phot.magfloatnullablelogMass? Logarithm of the stellar mass (3)log(solMass)phys.massfloatnullablee_logMass? Error on logMass (3)log(solMass)stat.error;phys.massfloatnullablelogSFR? Logarithm of the star formation rate (3)log(solMass.yr**-1)phys.SFRfloatnullableRefPhotometric catalogue (4)meta.bibchar_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