J/A+A/630/A76ivo://CDS.VizieR/J/A+A/630/A76doi:10.26093/cds/vizier.36300076CDSGalbany L.Ashall C.Hoeflich P.Gonzalez-Gaitan S.Taubenberger S.,Stritzinger M.Hsiao E.Y.Mazzali P.Baron E.Blondin S.Bose S.,Bulla M.Burke J.F.Burns C.R.Cartier R.Chen P.Della Valle M.,Diamond T.R.Gutierrez C.P.Harmanen J.Hiramatsu D.Holoien T.W.-S,Hosseinzadeh G.Howell D.A.Huang Y.Inserra C.de Jaeger T.Jha S.W.,Kangas T.Kromer M.Lyman J.D.Maguire K.Howie Marion G.,Milisavljevic D.Prentice S.J.Razza A.Reynolds T.M.Sand D.J.,Shappee B.J.Shekhar R.Smartt S.J.Stassun K.G.Sullivan M.,Valenti S.Villanueva S.Wang X.Craig Wheeler J.Zhai Q.Zhang J.2022-05-11T09:16:00Z2019-09-23T09:37:25ZCDS support team

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

cds-question@unistra.frsupernovaevisible-astronomybroad-band-photometryinfrared-photometryspectroscopyline-intensitiesWe present a comprehensive dataset of optical and near-infrared photometry and spectroscopy of type Ia supernova (SN) 2016hnk, combined with integral field spectroscopy (IFS) of its host galaxy, MCG -01-06-070, and nearby environment. Our goal with this complete dataset is to understand the nature of this peculiar object. Methods: Properties of the SN local environment are characterized by means of single stellar population synthesis applied to IFS observations taken two years after the SN exploded. We performed detailed analyses of SN photometric data by studying its peculiar light and color curves. SN 2016hnk spectra were compared to other 1991bg-like SNe Ia, 2002es-like SNe Ia, and Ca-rich transients. In addition, we used abundance stratification modeling to identify the various spectral features in the early phase spectral sequence and also compared the dataset to a modified non-LTE model previously produced for the subluminous SN1999by. Results: SN 2016hnk is consistent with being a subluminous (MB=-16.7mag, sBV=0.43+/-0.03), highly reddened object. The IFS of its host galaxy reveals both a significant amount of dust at the SN location, residual star formation, and a high proportion of old stellar populations in the local environment compared to other locations in the galaxy, which favors an old progenitor for SN 2016hnk. Inspection of a nebular spectrum obtained one year after maximum contains two narrow emission lines attributed to the forbidden [CaII] {lambda}{lambda}7291,7324 doublet with a Doppler shift of 700km/s. Based on various observational diagnostics, we argue that the progenitor of SN 2016hnk was likely a near Chandrasekhar-mass (MCh) carbon-oxygen white dwarf that produced 0.108M_{sun}_ of 56 Ni. Our modeling suggests that the narrow [CaII] features observed in the nebular spectrum are associated with 48 Ca from electron capture during the explosion, which is expected to occur only in white dwarfs that explode near or at the MCh limit.2019A&A...630A..76Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/630/A76CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/630/A76https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/630/A76http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/630/A76https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/630/A76https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/630/A76http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/630/A76GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap7.952274030004205e-20 4.920466254354166e-19OpticalInfrareddefaultJ/A+A/630/A76/tablec1ASASSN V-band photometry and upper limitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDModified Julian Daydtime.epochdoubleEpoch[-36.46/+08.66] Rest-frame epochdtime.epochfloatl_VmagLimit flag on Vmagmeta.code.errorcharVmagASASSN V-band magnitude or upper limit (AB)magphot.mag;em.opt.Vfloate_Vmag? V-band magnitude errormagstat.error;phot.magfloatnullableJ/A+A/630/A76/tablec2ATLAS c/o-band photometry and upper limitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDModified Julian Daydtime.epochdoubleEpoch[-45.15/+93.33] Rest-frame epochdtime.epochfloatcmag? ATLAS c-band magnitude (AB)magphot.mag;em.opt.Bfloatnullablee_cmag? ATLAS c-band magnitude errormagstat.error;phot.magfloatnullablel_omagLimit flag on omagmeta.code.errorcharomag? ATLAS o-band magnitude or upper limit (AB)magphot.mag;em.opt.Ifloatnullablee_omag? ATLAS o-band magnitude errormagstat.error;phot.magfloatnullableJ/A+A/630/A76/tablec3Photometry for SN2016hnkrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDModified Julian Daydtime.epochdoubleEpoch[+0.7/+108.6] Rest-frame epochdtime.epochfloatBmag? B-band magnitude (AB)magphot.mag;em.opt.Bfloatnullablee_Bmag? B-band magnitude errormagstat.error;phot.magfloatnullableVmag? V-band magnitude (AB)magphot.mag;em.opt.Vfloatnullablee_Vmag? V-band magnitude errormagstat.error;phot.magfloatnullablel_umaglimit flag on umagmeta.code.errorcharumag? u-band upper limit (AB)magphot.mag;em.opt.Ufloatnullablegmag? g-band magnitude (AB)magphot.mag;em.opt.Bfloatnullablee_gmag? g-band magnitude errormagstat.error;phot.magfloatnullablermag? r-band magnitude (AB)magphot.mag;em.opt.Rfloatnullablee_rmag? r-band magnitude errormagstat.error;phot.magfloatnullableimag? i-band magnitude (AB)magphot.mag;em.opt.Ifloatnullablee_imag? i-band magnitude errormagstat.error;phot.magfloatnullablezmag? z-band magnitude (AB)magphot.mag;em.opt.Ifloatnullablee_zmag? z-band magnitude errormagstat.error;phot.magfloatnullableInstTelescope/instrument (1)meta.notecharJ/A+A/630/A76/tablec4Near-infrared photometry for SN2016hnkrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDModified Julian Daydtime.epochdoubleEpoch[+5.62/+72.29] Rest-frame epochdtime.epochfloatJmagJ-band magnitudemagphot.mag;em.IR.Jfloate_JmagJ-band magnitude errormagstat.error;phot.magfloatHmagH-band magnitudemagphot.mag;em.IR.Hfloate_HmagH-band magnitude errormagstat.error;phot.magfloatKmagK-band magnitudemagphot.mag;em.IR.Kfloate_KmagK-band magnitude errormagstat.error;phot.magfloatInstTelescope/instrument (1)meta.notecharJ/A+A/630/A76/tablec5Journal of spectroscopic observationsTexpTime of exposurestime.epochcharAirmassAirmassobs.airMassfloatTelTelescopemeta.id;instr.telcharSpecSpectrograph (1)meta.id;instrcharGrismGrismmeta.notecharRangeWavelength range ({AA})em.wlcharResResolutionpos.angResolutioncharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintUTTime of the spectrumstime.epochnullableMJDModified Julian daydtime.epochdoubleEpochB-band rest-frame epochdtime.epochfloatJ/A+A/630/A76/tablec6Measured velocities in units of 10+3km/srecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpochB-band Rest-frame epochdtime.epochfloatVCaIIHK? CaIIHK velocity1000km.s**-1spect.dopplerVelocfloatnullablee_VCaIIHK? CaIIHK velocity error1000km.s**-1stat.errorfloatnullableVFeII? FeII velocity1000km.s**-1spect.dopplerVelocfloatnullablee_VFeII? FeII velocity error1000km.s**-1stat.errorfloatnullableVSIIW1? SIIW1 velocity1000km.s**-1spect.dopplerVelocfloatnullablee_VSIIW1? SIIW1 velocity error1000km.s**-1stat.errorfloatnullableVSIIW2? SIIW2 velocity1000km.s**-1spect.dopplerVelocfloatnullablee_VSIIW2? SIIW2 velocity error1000km.s**-1stat.errorfloatnullableVSiII5972? SiII5972 velocity1000km.s**-1spect.dopplerVelocfloatnullablee_VSiII5972? SiII5972 velocity error1000km.s**-1stat.errorfloatnullableVSiII6355? SiII6355 velocity1000km.s**-1spect.dopplerVelocfloatnullablee_VSiII6355? SiII6355 velocity error1000km.s**-1stat.errorfloatnullableVOI? OI velocity1000km.s**-1spect.dopplerVelocfloatnullablee_VOI? OI velocity error1000km.s**-1stat.errorfloatnullableVCaIINIR? CaIINIR velocity1000km.s**-1spect.dopplerVelocfloatnullablee_VCaIINIR? CaIINIR velocity error1000km.s**-1stat.errorfloatnullableJ/A+A/630/A76/tablec7Measured pseudo-equivalent widths in {AA}WSiII5972? SiII5972 pseudo equivalent width0.1nmspect.line.eqWidthfloatnullablee_WSiII5972? SiII5972 pseudo equivalent width error0.1nmstat.errorfloatnullableWSiII6355? SiII6355 pseudo equivalent width0.1nmspect.line.eqWidthfloatnullablee_WSiII6355? SiII6355 pseudo equivalent width error0.1nmstat.errorfloatnullableWOI? OI pseudo equivalent width0.1nmspect.line.eqWidthfloatnullablee_WOI? OI pseudo equivalent width error0.1nmstat.errorfloatnullableWCaIINIR? CaIINIR pseudo equivalent width0.1nmspect.line.eqWidthfloatnullablee_WCaIINIR? CaIINIR pseudo equivalent width error0.1nmstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpochB-band rest-frame epochdtime.epochfloatWCaIIHK? CaIIHK pseudo equivalent width0.1nmspect.line.eqWidthfloatnullablee_WCaIIHK? CaIIHK pseudo equivalent width error0.1nmstat.errorfloatnullableWFeII? FeII pseudo equivalent width0.1nmspect.line.eqWidthfloatnullablee_WFeII? FeII pseudo equivalent width error0.1nmstat.errorfloatnullableWSIIW1? SIIW1 pseudo equivalent width0.1nmspect.line.eqWidthfloatnullablee_WSIIW1? SIIW1 pseudo equivalent width error0.1nmstat.errorfloatnullableWSIIW2? SIIW2 pseudo equivalent width0.1nmspect.line.eqWidthfloatnullablee_WSIIW2? SIIW2 pseudo equivalent width error0.1nmstat.errorfloatnullable