J/ApJ/882/30ivo://CDS.VizieR/J/ApJ/882/30doi:10.26093/cds/vizier.18820030CDSLi W.Wang X.Hu M.Yang YiZhang J.Mo J.Chen Z.Zhang T.,Benetti S.Cappellaro E.Elias-Rosa N.Isern J.Morales-Garoffolo A.,Huang F.Ochner P.Pastorello A.Reguitti A.Tartaglia L.Terreran G.,Tomasella L.Wang L.2021-04-27T11:59:36Z2021-03-01T09:26:12ZCDS support team

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

cds-question@unistra.frsupernovaeinfrared-photometryvisible-astronomybroad-band-photometryWe present extensive ground-based and Hubble Space Telescope (HST) photometry of the highly reddened, very nearby SN Ia 2014J in M82, covering the phases from 9 days before to about 900 days after the B-band maximum. SN 2014J is similar to other normal SNe Ia near the maximum light, but it shows flux excess in the B band in the early nebular phase. This excess flux emission can be due to light scattering by some structures of circumstellar materials located at a few 10^17^cm, consistent with a single-degenerate progenitor system or a double-degenerate progenitor system with mass outflows in the final evolution or magnetically driven winds around the binary system. At t~+300 to ~+500 days past the B-band maximum, the light curve of SN 2014J shows a faster decline relative to the 56Ni decay. That feature can be attributed to the significant weakening of the emission features around [FeIII]{lambda}4700 and [FeII]{lambda}5200 rather than the positron escape, as previously suggested. Analysis of the HST images taken at t>600 days confirms that the luminosity of SN 2014J maintains a flat evolution at the very late phase. Fitting the late-time pseudobolometric light curve with radioactive decay of ^56^Ni, ^57^Ni, and ^55^Fe isotopes, we obtain the mass ratio ^57^Ni/^56^Ni as 0.035+/-0.011, which is consistent with the corresponding value predicted from the 2D and 3D delayed-detonation models. Combined with early-time analysis, we propose that delayed-detonation through the single-degenerate scenario is most likely favored for SN 2014J.2019ApJ...882...30Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/882/30CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)J/ApJ/699/L139 : Spectral parameters of SNe Ia (Wang+, 2009)J/other/NewA/20.30 : BVRI light curves of 3 SN (Munari+, 2013)J/other/Sci/340.170 : Classifications of 188 SNe Ia (Wang+, 2013)J/ApJ/788/L21 : Photometry of SN 2014J from HST (Amanullah+, 2014)J/ApJ/805/74 : SN2014J Swift/UVOT light curves (Brown+, 2015)J/MNRAS/454/3816 : Cobalt emission in nebular phase spectra (Childress+, 2015)J/ApJ/799/105 : KELT light curve of the M82 SN 2014J (Siverd+, 2015)J/A+A/585/A19 : SN 2014J BV light curves (Bonanos+, 2016)J/A+A/592/A40 : Photometry of SN 2013gh and iPTF13dge (Ferretti+, 2016)J/ApJ/841/48 : UBVR and IR photometry of SN 2011fe (Ia) (Shappee+, 2017)J/ApJ/870/L1 : K2 obs. of type Ia SN 2018oh (Dimitriadis+, 2019)J/ApJ/870/13 : K2 LC alternative analysis of ASASSN-18bt (Shappee+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/882/30https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/882/30http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/882/30https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/882/30https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/882/30http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/882/30GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/ApJ/882/30/table2Ground-based Photometry of SN 2014JrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObs[2014/2015] UT Year of the observationstime.epoch;obsEpoch[-9.7/434.2] Epoch, days after t_Bmax_ on 2014-02-02.1 (JD 2456690.1)dtime.epochfloatUmag[12/18]? Apparent U band magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag[0.02/0.2]? Uncertainty in Umagmagstat.error;phot.magfloatnullableBmag[11.8/20]? Apparent B band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag[0.02/0.16]? Uncertainty in Bmagmagstat.error;phot.magfloatnullableVmag[10.5/19.1]? Apparent V band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag[0.01/0.14]? Uncertainty in Vmagmagstat.error;phot.magfloatnullableRmag[10/18.4]? Apparent R band magnitudemagphot.mag;em.opt.Rfloatnullablee_Rmag[0.01/0.18]? Uncertainty in Rmagmagstat.error;phot.magfloatnullableImag[9/17]? Apparent I band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag[0.01/0.14]? Uncertainty in Imagmagstat.error;phot.magfloatnullableTelTelescope code (1)meta.code;instr.telchar