J/ApJ/942/L18ivo://CDS.VizieR/J/ApJ/942/L18doi:10.26093/cds/vizier.19429018CDSHosseinzadeh G.Sand D.J.Jencson J.E.Andrews J.E.Shivaei I.,Bostroem K.A.Valenti S.Szalai T.Burke J.Howell D.A.McCully C.,Newsome M.Gonzalez E.P.Pellegrino C.Terreran G.2025-02-24T20:13:54Z2024-12-30T15:36:47ZCDS support team

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

cds-question@unistra.frsupernovaephotometryinfrared-astronomyvisible-astronomyspectroscopyspectral-energy-distributionradial-velocityWe present near- and mid-infrared (0.9-18{mu}m) photometry of supernova (SN) 2021afdx, which was imaged serendipitously with the James Webb Space Telescope (JWST) as part of its Early Release Observations of the Cartwheel Galaxy. Our ground-based optical observations show it is likely to be a Type IIb SN, the explosion of a yellow supergiant, and its infrared spectral energy distribution (SED) ~200 days after explosion shows two distinct components, which we attribute to hot ejecta and warm dust. By fitting models of dust emission to the SED, we derive a dust mass of (3.8_-0.3_^+0.5^)x10^-3^M_{sun}_, which is the highest yet observed in a Type IIb SN but consistent with other Type II SNe observed by the Spitzer Space Telescope. We also find that the radius of the dust is significantly larger than the radius of the ejecta, as derived from spectroscopic velocities during the photospheric phase, which implies that we are seeing an infrared echo off of preexisting dust in the progenitor environment, rather than dust newly formed by the SN. Our results show the power of JWST to address questions of dust formation in SNe, and therefore the presence of dust in the early universe, with much larger samples than have been previously possible.2023ApJ...942L..18Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/942/L18CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/330/881 : Radial velocities of Cartwheel Galaxy (Amram+ 1998)J/ApJ/778/L19 : SN 2011dh (type IIb) 3.6 & 4.5um light curves (Helou+, 2013)J/MNRAS/438/L101 : First month on SN 2013ej (Valenti+, 2014)J/A+A/580/A142 : SN 2011dh. The first two years (Ergon+, 2015)J/other/Sci/348.413 : Sgr A East SNR multiwavelength images (Lau+, 2015)J/A+A/579/A40 : PESSTO catalog (Smartt+, 2015)J/MNRAS/459/3939 : Type II supernova light curves (Valenti+, 2016)J/ApJ/864/L20 : SN 2017eaw NIR spectroscopy (Rho+, 2018)J/ApJS/241/38 : A comprehensive analysis of Spitzer SNe (Szalai+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/942/L18https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/942/L18http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/942/L18https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/942/L18https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/942/L18http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/942/L18GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/ApJ/942/L18/table1Spectroscopic observations and velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[59550.49/59601.43] Modified Julian Datedtime.epochdoubleTelTelescope ("FTS")meta.id;instr.telcharInstInstrument ("FLOYDS")meta.id;instrcharPhase[10.8/60.3] Phase (G1)dtime.phasefloatVHa[11.1/12.59]? H{alpha} velocityMm/sspect.dopplerVeloc;em.line.Halphafloatnullablee_VHa[0.07/0.1]? VHa uncertaintyMm/sstat.error;spect.dopplerVeloc;em.line.HalphafloatnullableFileName of the FITS file in subdirectory "sp"; column added by CDSmeta.id;meta.file;meta.fitscharfitsDownload the FITS filemeta.ref.urlcharspInteractive spectrum plotmeta.ref.urlcharJ/ApJ/942/L18/fig2aGround-based optical and JWST-based infrared of SN 2021afdxrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[59387.6/59745.42] Modified Julian Date of observation (JD-2400000.5)dtime.epochdoublel_omagLimit flag on omagmeta.code.error;phot.magcharomag[17.98/23.95] Observed magnitude in Filtermagphot.magfloate_omag[0.004/0.2]? Uncertainty in omag, null if upper limitmagstat.error;phot.magfloatnullableFilterFiltermeta.id;instr.filtercharTelTelescope ("Las Cumbres 1m", "ATLAS", or "JWST")meta.id;instr.telcharPhase[-147.31/200.03] Phase (G1)dtime.phasedoubleJ/ApJ/942/L18/fig2bPseudo-bolometric light curve fits with a blackbody SEDMJD[59547.8/59598.1] Modified Julian Date of observation (JD-2400000.5)dtime.epochdoubleE_MJDUpper uncertainty on MJDdstat.error;stat.max;time.epochfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinte_MJDLower uncertainty on MJDdstat.error;stat.min;time.epochfloatLbolPseudobolometric luminosity (1)Wphys.luminositydoubleE_LbolUpper uncertainty on LbolWstat.error;stat.max;phys.luminositydoublee_LbolLower uncertainty on LbolWstat.error;stat.min;phys.luminositydoubleTphotPhotospheric temperature (1)kKphys.temperaturefloatE_TphotUpper uncertainty on TphotkKstat.error;stat.max;phys.temperaturefloate_TphotLower uncertainty on TphotkKstat.error;stat.min;phys.temperaturefloatRphotPhotospheric radius (1)1000solRadphys.size.radiusfloatE_RphotUpper uncertainty on Rphot1000solRadstat.error;stat.max;phys.size.radiusfloate_RphotLower uncertainty on Rphot1000solRadstat.error;stat.min;phys.size.radiusfloatNfits[2/6] Number of points used in fitting (1)meta.numberintFiltFilters used in fitting (1)meta.code;instr.filtercharPhase[8.2/57] Phase (G1)dtime.phasefloat