J/A+A/675/A73ivo://CDS.VizieR/J/A+A/675/A73doi:10.26093/cds/vizier.36750073CDSLi Y.Zheng S.Zeng X.Wang X.Burke J.Pellegrino C.Esamdin A.,Lin X.Wang Y.Iskandar A.Zhang J.Wei P.Bird S.A.Zeng S.,Huang Y.Howell D.A.Bostroem K.A.McCully C.Hiramatsu D.,Hosseinzadeh G.Li W.Zhang T.Wang L.Zhou G.2024-11-28T20:04:27Z2023-07-03T09:53:50ZCDS support team

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

cds-question@unistra.frsupernovaeinfrared-photometryvisible-astronomybroad-band-photometrysloan-photometryultraviolet-photometryWe present a comparative study of two nearby type Ia supernovae (SNe Ia), 2018xx and 2019gbx, that exploded in NGC 4767 and MCG-02-33-017 at a distance of 48 Mpc and 60 Mpc, respectively. The B-band light curve decline rate for SN 2018xx is estimated to be 1.48+/-0.07mag and for SN 2019gbx it is 1.37+/-0.07mag. Despite the similarities in photometric evolution, quasi-bolometric luminosity, and spectroscopy between these two SNe Ia, SN 2018xx has been found to be fainter by about 0.38mag in the Bband and has a lower 56Ni yield. Their host galaxies have similar metallicities at the SN location, indicating that the differences between these two SNe Ia may be associated with the higher progenitor metallicity of SN 2018xx. Further inspection of the near maximum-light spectra has revealed that SN 2018xx has relatively strong absorption features near 4300{AA} relative to SN 2019gbx. The application of the code TARDIS fitting to the above features indicates that the absorption features near 4300{AA} appear to be related to not only FeII/MgII abundance but possibly to the other element abundances as well. Moreover, SN 2018xx shows a weaker carbon absorption at earlier times, which is also consistent with higher ejecta metallicity.2023A&A...675A..73Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/675/A73CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/675/A73https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/675/A73http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/675/A73https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/675/A73https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/675/A73http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/675/A73GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/675/A73/tablea1 (Photometric standards in the SN 2018xx field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/675/A73/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/675/A73/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/675/A73/tablea1?GETtext/xml+votable180.050000true193.358-39.6120.005555555555555556Cone search capability for table J/A+A/675/A73/tablea2 (Photometric standards in the SN 2019gbx field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/675/A73/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/675/A73/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/675/A73/tablea2?GETtext/xml+votable180.050000true192.53-14.8230.0055555555555555566/25048 43630-436312.367228618189496e-19 6.118840631666147e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/675/A73?format=asciiUVOpticalInfrareddefaultJ/A+A/675/A73/tablea1Photometric standards in the SN 2018xx fieldRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDEJ2000Declination (J2000)degpos.eq.dec;meta.mainUmagU band magnitudemagphot.mag;em.opt.Ufloate_UmagUncertainty in Umagmagstat.error;phot.magfloatBmagB band magnitudemagphot.mag;em.opt.Bfloate_BmagUncertainty in Bmagmagstat.error;phot.magfloatVmagV band magnitudemagphot.mag;em.opt.Vfloate_VmagUncertainty in Vmagmagstat.error;phot.magfloatRmagR band magnitudemagphot.mag;em.opt.Rfloate_RmagUncertainty in Rmagmagstat.error;phot.magfloatImagI band magnitudemagphot.mag;em.opt.Ifloate_ImagUncertainty in Imagmagstat.error;phot.magfloatgmagg band magnitudemagphot.mag;em.opt.Bfloate_gmagUncertainty in gmagmagstat.error;phot.magfloatrmagr band magnitudemagphot.mag;em.opt.Rfloate_rmagUncertainty in rmagmagstat.error;phot.magfloatimagi band magnitudemagphot.mag;em.opt.Ifloate_imagUncertainty in imagmagstat.error;phot.magfloatJ/A+A/675/A73/tablea2Photometric standards in the SN 2019gbx fieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainUmagU band magnitudemagphot.mag;em.opt.Ufloate_UmagUncertainty in Umagmagstat.error;phot.magfloatBmagB band magnitudemagphot.mag;em.opt.Bfloate_BmagUncertainty in Bmagmagstat.error;phot.magfloatVmagV band magnitudemagphot.mag;em.opt.Vfloate_VmagUncertainty in Vmagmagstat.error;phot.magfloatRmagR band magnitudemagphot.mag;em.opt.Rfloate_RmagUncertainty in Rmagmagstat.error;phot.magfloatImagI band magnitudemagphot.mag;em.opt.Ifloate_ImagUncertainty in Imagmagstat.error;phot.magfloatgmagg band magnitudemagphot.mag;em.opt.Bfloate_gmagUncertainty in gmagmagstat.error;phot.magfloatrmagr band magnitudemagphot.mag;em.opt.Rfloate_rmagUncertainty in rmagmagstat.error;phot.magfloatimagi band magnitudemagphot.mag;em.opt.Ifloate_imagUncertainty in imagmagstat.error;phot.magfloatJ/A+A/675/A73/tableb1Optical and UV photometric observations of SN 2018xx obtained from LCO and Swift telescopesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDModified Julian Date of observation (JD=2400000.5)dtime.epochdoublePhaseDays relative to MJD = 58647.39 for SN 2018xx (tableb1.dat), MJD = 58184.29 for SN 2019gbx (tableb2.dat)dtime.phasefloatBmag? B band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Uncertainty in Bmagmagstat.error;phot.magfloatnullableVmag? V band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? Uncertainty in Vmagmagstat.error;phot.magfloatnullableUmag? U band magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? Uncertainty in Umagmagstat.error;phot.magfloatnullablegmag? g band magnitudemagphot.mag;em.opt.Bfloatnullablee_gmag? Uncertainty in gmagmagstat.error;phot.magfloatnullablermag? r band magnitudemagphot.mag;em.opt.Rfloatnullablee_rmag? Uncertainty in rmagmagstat.error;phot.magfloatnullableimag? i band magnitudemagphot.mag;em.opt.Ifloatnullablee_imag? Uncertainty in imagmagstat.error;phot.magfloatnullableUVM2mag? UVM2 band magnitudemagphot.mag;em.UVfloatnullablee_UVM2mag? Uncertainty in UVM2magmagstat.error;phot.magfloatnullableUVW2mag? UVW2 band magnitudemagphot.mag;em.UVfloatnullablee_UVW2mag? Uncertainty in UVW2magmagstat.error;phot.magfloatnullableUVW1mag? UVW1 band magnitudemagphot.mag;em.UVfloatnullablee_UVW1mag? Uncertainty in UVW1magmagstat.error;phot.magfloatnullableJ/A+A/675/A73/tableb2Optical and UV photometric observations of SN 2019gbx obtained by LCO and Swift telescopesBmag? B band magnitudemagphot.mag;em.opt.BfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDModified Julian Date of observation (JD=2400000.5)dtime.epochdoublePhaseDays relative to MJD = 58647.39 for SN 2018xx (tableb1.dat), MJD = 58184.29 for SN 2019gbx (tableb2.dat)dtime.phasefloate_Bmag? Uncertainty in Bmagmagstat.error;phot.magfloatnullableVmag? V band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? Uncertainty in Vmagmagstat.error;phot.magfloatnullableUmag? U band magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? Uncertainty in Umagmagstat.error;phot.magfloatnullablegmag? g band magnitudemagphot.mag;em.opt.Bfloatnullablee_gmag? Uncertainty in gmagmagstat.error;phot.magfloatnullablermag? r band magnitudemagphot.mag;em.opt.Rfloatnullablee_rmag? Uncertainty in rmagmagstat.error;phot.magfloatnullableimag? i band magnitudemagphot.mag;em.opt.Ifloatnullablee_imag? Uncertainty in imagmagstat.error;phot.magfloatnullableUVM2mag? UVM2 band magnitudemagphot.mag;em.UVfloatnullablee_UVM2mag? Uncertainty in UVM2magmagstat.error;phot.magfloatnullableUVW2mag? UVW2 band magnitudemagphot.mag;em.UVfloatnullablee_UVW2mag? Uncertainty in UVW2magmagstat.error;phot.magfloatnullableUVW1mag? UVW1 band magnitudemagphot.mag;em.UVfloatnullablee_UVW1mag? Uncertainty in UVW1magmagstat.error;phot.magfloatnullable