J/A+A/695/A42ivo://CDS.VizieR/J/A+A/695/A42doi:10.26093/cds/vizier.36950042CDSValerin G.Pastorello A.Reguitti A.Benetti S.Cai Y.-Z.Chen T.-W.,Eappachen D.Elias-Rosa N.Fraser M.Gangopadhyay A.Hsiao E.Y.,Howell D.A.Inserra C.Izzo L.Jencson J.Kankare E.Kotak R.,Mazzali P.A.Misra K.Pignata G.Prentice S.J.Sand D.J.Smartt S.J.,Stritzinger M.D.Tartaglia L.Valenti S.Anderson J.P.Andrews J.E.,Amaro R.C.Brennan S.Bufano F.Callis E.Cappellaro E.Dastidar R.,Della Valle M.Fiore A.Fulton M.D.Galbany L.Heikkilae T.,Hiramatsu D.Karamehmetoglu E.Kuncarayakti H.Leloudas G.Lundquist M.,McCully C.Mueller-Bravo T.E.Nicholl M.Ochner P.Padilla Gonzalez E.,Paraskeva E.Pellegrino C.Rau A.Reichart D.E.Reynolds T.M.Roy R.,Salmaso I.Singh M.Turatto M.Tomasella L.Wyatt S.Young D.R.2025-05-21T20:02:50Z2025-03-07T09:00:03ZCDS support team

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

cds-question@unistra.frvariable-starsinfrared-photometryvisible-astronomybroad-band-photometrysloan-photometryWe investigate the photometric characteristics of a sample of intermediate-luminosity red transients (ILRTs), a class of elusive objects with peak luminosity between that of classical novae and standard supernovae. Our goal is to provide a stepping stone in the path to reveal the physical origin of such events, thanks to the analysis of the datasets collected. We present the multi-wavelength photometric follow-up of four ILRTs, namely NGC 300 2008OT-1, AT 2019abn, AT 2019ahd, and AT 2019udc. Through the analysis and modelling of their spectral energy distribution and bolometric light curves, we inferred the physical parameters associated with these transients. All four objects display a single-peaked light curve which ends in a linear decline in magnitudes at late phases. A flux excess with respect to a single blackbody emission is detected in the infrared domain for three objects in our sample, a few months after maximum. This feature, commonly found in ILRTs, is interpreted as a sign of dust formation. Mid-infrared monitoring of NGC 300 2008OT-1 761 days after maximum allowed us to infer the presence of about 0.00001 to 0.001 solar masses of dust, depending on the chemical composition and the grain size adopted. The late-time decline of the bolometric light curves of the considered ILRTs is shallower than expected for 56Ni decay, hence requiring an additional powering mechanism. James Webb Space Telescope observations of AT 2019abn prove that the object has faded below its progenitor luminosity in the mid-infrared domain, five years after its peak. Together with the disappearance of NGC 300 2008OT-1 in Spitzer images seven years after its discovery, this supports the terminal explosion scenario for ILRTs. With a simple semi-analytical model we tried to reproduce the observed bolometric light curves in the context of a few solar masses ejected at few 1000 kilometer per second and enshrouded in an optically thick circumstellar medium.2025A&A...695A..42Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/695/A42CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/637/A20 : AT 2019abn: multi-wavelength observations (Williams+, 2020)J/ApJ/743/118 : BVRIJHK photometry of the 2008 OT in NGC 300https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/695/A42https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/695/A42http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/695/A42https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/695/A42https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/695/A42http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/695/A42GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap3.830199579824256e-20 6.194049834323928e-19OpticalInfrareddefaultJ/A+A/695/A42/tablea1Details on the facilities used to collect the dataDiamPrimary mirror diametermphys.size;instr.telfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCodeCode used to refer to this facilitymeta.codecharTelTelescope namemeta.id;instr.telcharInstInstrument namemeta.id;instrcharSiteLocation of the sitemeta.id;instr.obstycharJ/A+A/695/A42/tablea2Decline rates of AT 2019abnrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharBandName of the bandinstr.bandpasscharG1? Decline rate between -25 and -11 days0.01mag.d**-1src.var.amplitudefloatnullablee_G1? Error on G10.01mag.d**-1stat.errorfloatnullableG2Decline rate between 0 and 110 days0.01mag.d**-1src.var.amplitudefloate_G2Error on G20.01mag.d**-1stat.errorfloatG3? Decline rate between 110 and 185 days0.01mag.d**-1src.var.amplitudefloatnullablee_G3? Error on G30.01mag.d**-1stat.errorfloatnullableG4? Decline rate beyond 185 days0.01mag.d**-1src.var.amplitudefloatnullablee_G4? Error on G40.01mag.d**-1stat.errorfloatnullableJ/A+A/695/A42/tablea3Decline rates of AT 2019ahdrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharBandName of the bandinstr.bandpasscharG1Decline rate between 0 and 45 days0.01mag.d**-1src.var.amplitudefloate_G1Error on G10.01mag.d**-1stat.errorfloatG2? Decline rate between 45 and 105 days0.01mag.d**-1src.var.amplitudefloatnullablee_G2? Error on G20.01mag.d**-1stat.errorfloatnullableG3? Decline rate beyond 105 days0.01mag.d**-1src.var.amplitudefloatnullablee_G3? Error on G30.01mag.d**-1stat.errorfloatnullableJ/A+A/695/A42/tablea4Decline rates of AT 2019udcrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharBandName of the bandinstr.bandpasscharG1? Decline rate between -10 and -8 days0.01mag.d**-1src.var.amplitudefloatnullablee_G1? Error on G10.01mag.d**-1stat.errorfloatnullableG2? Decline rate between 0 and 35 days0.01mag.d**-1src.var.amplitudefloatnullablee_G2? Error on G20.01mag.d**-1stat.errorfloatnullableG3? Decline rate beyond 35 days0.01mag.d**-1src.var.amplitudefloatnullablee_G3? Error on G30.01mag.d**-1stat.errorfloatnullableJ/A+A/695/A42/tablea5Decline rates of NGC 300 OTe_G2? Error on G20.01mag.d**-1stat.errorfloatnullableG3? Decline rate between 75 and 120 days0.01mag.d**-1src.var.amplitudefloatnullablee_G3? Error on G30.01mag.d**-1stat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharBandName of the bandinstr.bandpasscharG1Decline rate between 0 and 35 days0.01mag.d**-1src.var.amplitudefloate_G1Error on G10.01mag.d**-1stat.errorfloatG2? Decline rate between 35 and 75 days0.01mag.d**-1src.var.amplitudefloatnullableG4? Decline rate between 120 and 255 days0.01mag.d**-1src.var.amplitudefloatnullablee_G4? Error on G40.01mag.d**-1stat.errorfloatnullableG5? Decline rate beyond 255 days0.01mag.d**-1src.var.amplitudefloatnullablee_G5? Error on G50.01mag.d**-1stat.errorfloatnullableJ/A+A/695/A42/tablea6Template light curve for ILRTsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPhasePhase from maximumdtime;arith.diffintmagtotTotal ILRT template light curvemagphot.mag;meta.modelledfloate_magtotLower error for the total templatemagstat.errorfloatE_magtotUpper error for the total templatemagstat.error;stat.maxfloatmagslowSlow declining ILRT template light curvemagphot.mag;meta.modelledfloate_magslowLower error for the slow declining templatemagstat.errorfloatE_magslowUpper error for the slow declining templatemagstat.error;stat.maxfloatmagfast? Fast declining ILRT template light curvemagphot.mag;meta.modelledfloatnullablee_magfast? Lower error for the fast declining templatemagstat.errorfloatnullableE_magfast? Upper error for the fast declining templatemagstat.error;stat.maxfloatnullableJ/A+A/695/A42/tableb1Photometric data of NGC 300 OT (Johnson)NameSN namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdoubleUmag? Johnson-Cousins U band magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? Johnson-Cousins U band magnitude errormagstat.error;phot.magfloatnullableBmag? Johnson-Cousins B band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Johnson-Cousins B band magnitude errormagstat.error;phot.magfloatnullableVmag? Johnson-Cousins V band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? Johnson-Cousins V band magnitude errormagstat.error;phot.magfloatnullableRmag? Johnson-Cousins R band magnitudemagphot.mag;em.opt.Rfloatnullablee_Rmag? Johnson-Cousins R band magnitude errormagstat.error;phot.magfloatnullableImag? Johnson-Cousins I band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag? Johnson-Cousins I band magnitude errormagstat.error;phot.magfloatnullableSourceFacility that obtained the datameta.id;instrcharJ/A+A/695/A42/tableb2Photometric data of NGC 300 OT (sloan)l_imagLimit flag on imagmeta.code.errorcharimag? Sloan i band magnitudemagphot.mag;em.opt.Ifloatnullablee_imag? Sloan i band magnitude errormagstat.error;phot.magfloatnullablel_zmagLimit on zmagmeta.code.errorcharzmag? Sloan z band magnitudemagphot.mag;em.opt.Ifloatnullablee_zmag? Sloan z band magnitude errormagstat.error;phot.magfloatnullableSourceFacility that obtained the datameta.id;instrcharl_rmagLimit flag on rmagmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdoubleumag? Sloan u band magnitudemagphot.mag;em.opt.Ufloatnullablee_umag? Sloan u band magnitude errormagstat.error;phot.magfloatnullablel_gmagLimit flag on gmagmeta.code.errorchargmag? Sloan g band magnitudemagphot.mag;em.opt.Bfloatnullablee_gmag? Sloan g band magnitude errormagstat.error;phot.magfloatnullablermag? Sloan r band magnitudemagphot.mag;em.opt.Rfloatnullablee_rmag? Sloan r band magnitude errormagstat.error;phot.magfloatnullableJ/A+A/695/A42/tableb3Photometric data of NGC 300 OT (NIR)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdoubleJmag? NIR J band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? NIR J band magnitude errormagstat.error;phot.magfloatnullableHmag? NIR H band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? NIR H band magnitude errormagstat.error;phot.magfloatnullableKmag? NIR K band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? NIR K band magnitude errormagstat.error;phot.magfloatnullableSourceFacility that obtained the datameta.id;instrcharJ/A+A/695/A42/tableb4Photometric data of AT 2019abn (Sloan)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdoublel_gmagLimit flag on gmagmeta.code.errorchargmag? Sloan g band magnitudemagphot.mag;em.opt.Bfloatnullablee_gmag? Sloan g band magnitude errormagstat.error;phot.magfloatnullablermag? Sloan r band magnitudemagphot.mag;em.opt.Rfloatnullablee_rmag? Sloan r band magnitude errormagstat.error;phot.magfloatnullablel_imagLimit flag on imagmeta.code.errorcharimag? Sloan i band magnitudemagphot.mag;em.opt.Ifloatnullablee_imag? Sloan i band magnitude errormagstat.error;phot.magfloatnullablel_zmagLimit flag on zmagmeta.code.errorcharzmag? Sloan z band magnitudemagphot.mag;em.opt.Ifloatnullablee_zmag? Sloan z band magnitude errormagstat.error;phot.magfloatnullableSourceFacility that obtained the datameta.id;instrcharJ/A+A/695/A42/tableb5Photometric data of AT 2019abn (Johnson)e_Vmag? Johnson-Cousins V band magnitude errormagstat.error;phot.magfloatnullableSourceFacility that obtained the datameta.id;instrcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdoublel_BmagLimit flag on Bmagmeta.code.errorcharBmag? Johnson-Cousins B band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Johnson-Cousins B band magnitude errormagstat.error;phot.magfloatnullableVmag? Johnson-Cousins V band magnitudemagphot.mag;em.opt.VfloatnullableJ/A+A/695/A42/tabb6-1Photometric data of AT 2019abn (JWST)NameSN namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation (yyyymmdd)time.epochF560WJWST F560W band magnitudemagphot.flux.density;em.IR.4-8umfloate_F560WJWST F560W band magnitude errormagstat.errorfloatJ/A+A/695/A42/tabb6-2Photometric data of AT 2019abn (JWST)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochF444WJWST F444W band magnitudemagphot.mag;em.opt.Bfloate_F444WJWST F444W band magnitude errormagstat.errorfloatF560WJWST F560W band magnitudemagphot.flux.density;em.IR.4-8umfloate_F560WJWST F560W band magnitude errormagstat.errorfloatF770WJWST F770W band magnitudemagphot.flux.density;em.IR.4-8umfloate_F770WJWST F770W band magnitude errormagstat.errorfloatJ/A+A/695/A42/tabb6-3Photometric data of AT 2019abn (JWST)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochF200WJWST F200W band magnitudemagphot.mag;em.UV.200-300nmfloate_F200WJWST F200W band magnitude errormagstat.errorfloatF300MJWST F300M band magnitudemagphot.flux.density;em.IRfloate_F300MJWST F300M band magnitude errormagstat.errorfloatF335MJWST F335M band magnitudemagphot.flux.density;em.IRfloate_F335MJWST F335M band magnitude errormagstat.errorfloatJ/A+A/695/A42/tabb6-4Photometric data of AT 2019abn (JWST)e_F2100WJWST F2100W band magnitude errormagstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochF182MJWST F182M band magnitudemagphot.flux.density;em.IR.Hfloate_F182MJWST F182M band magnitude errormagstat.errorfloatF360MJWST F360M band magnitudemagphot.flux.density;em.IRfloate_F360MJWST F360M band magnitude errormagstat.errorfloatF430MJWST F430M band magnitudemagphot.mag;em.IR.4-8umfloate_F430MJWST F430M band magnitude errormagstat.errorfloatF1000WJWST F1000W band magnitudemagphot.flux.density;em.IR.8-15umfloate_F1000WJWST F1000W band magnitude errormagstat.errorfloatF1130WJWST F1130W band magnitudemagphot.flux.density;em.IR.8-15umfloate_F1130WJWST F1130W band magnitude errormagstat.errorfloatF1280WJWST F1280W band magnitudemagphot.flux.density;em.IR.8-15umfloate_F1280WJWST F1280W band magnitude errormagstat.errorfloatF1500WJWST F1500W band magnitudemagphot.flux.density;em.IR.8-15umfloate_F1500WJWST F1500W band magnitude errormagstat.errorfloatF1800WJWST F1800W band magnitudemagphot.flux.density;em.IR.8-15umfloate_F1800WJWST F1800W band magnitude errormagstat.errorfloatF2100WJWST F2100W band magnitudemagphot.flux.density;em.IR.15-30umfloatJ/A+A/695/A42/tableb7Photometric data of AT 2019abn (NIR)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdoubleJmag? NIR J band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? NIR J band magnitude errormagstat.error;phot.magfloatnullableHmag? NIR H band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? NIR H band magnitude errormagstat.error;phot.magfloatnullableKmag? NIR K band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? NIR K band magnitude errormagstat.error;phot.magfloatnullableSourceFacility that obtained the datameta.id;instrcharJ/A+A/695/A42/tabb8-2Photometric data of AT 2019abn (Spitzer)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdouble[3.6]Spitzer CH1 (3.6um) band magnitudemagphot.mag;em.IR.3-4umfloate_[3.6]Spitzer CH1 (3.6um) band magnitude errormagstat.errorfloat[4.5]Spitzer CH2 (4.5um) band magnitudemagphot.mag;em.IR.4-8umfloate_[4.5]Spitzer CH2 (4.5um) band magnitude errormagstat.errorfloatJ/A+A/695/A42/tabb8-1Photometric data of AT 2019abn (WISE)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdoubleW1WISE W1 band magnitudemagphot.mag;em.IR.3-4umfloate_W1WISE W1 band magnitude errormagstat.errorfloatW2WISE W2 band magnitudemagphot.mag;em.IR.4-8umfloate_W2WISE W2 band magnitude errormagstat.errorfloatJ/A+A/695/A42/tableb9Photometric data of AT 2019ahd (Sloan)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdoublegmag? Sloan g band magnitudemagphot.mag;em.opt.Bfloatnullablee_gmag? Sloan g band magnitude errormagstat.error;phot.magfloatnullablermag? Sloan r band magnitudemagphot.mag;em.opt.Rfloatnullablee_rmag? Sloan r band magnitude errormagstat.error;phot.magfloatnullableimag? Sloan i band magnitudemagphot.mag;em.opt.Ifloatnullablee_imag? Sloan i band magnitude errormagstat.error;phot.magfloatnullablezmag? Sloan z band magnitudemagphot.mag;em.opt.Ifloatnullablee_zmag? Sloan z band magnitude errormagstat.error;phot.magfloatnullableSourceFacility that obtained the datameta.id;instrcharJ/A+A/695/A42/tableb10Photometric data of AT 2019ahd (NIR)Hmag? NIR H band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? NIR H band magnitude errormagstat.error;phot.magfloatnullableKmag? NIR K band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? NIR K band magnitude errormagstat.error;phot.magfloatnullableSourceFacility that obtained the datameta.id;instrcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdoubleJmag? NIR J band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? NIR J band magnitude errormagstat.error;phot.magfloatnullableJ/A+A/695/A42/tableb11Photometric data of AT 2019udc (Johnson)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdoubleUmag? Johnson-Cousins U band magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? Johnson-Cousins U band magnitude errormagstat.error;phot.magfloatnullableBmag? Johnson-Cousins B band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Johnson-Cousins B band magnitude errormagstat.error;phot.magfloatnullableVmag? Johnson-Cousins V band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? Johnson-Cousins V band magnitude errormagstat.error;phot.magfloatnullableSourceFacility that obtained the datameta.id;instrcharJ/A+A/695/A42/tableb12Photometric data of AT 2019udc (Sloan)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdoubleumag? Sloan u band magnitudemagphot.mag;em.opt.Ufloatnullablee_umag? Sloan u band magnitude errormagstat.error;phot.magfloatnullablegmag? Sloan g band magnitudemagphot.mag;em.opt.Bfloatnullablee_gmag? Sloan g band magnitude errormagstat.error;phot.magfloatnullablel_rmagLimit flag on rmagmeta.code.errorcharrmag? Sloan r band magnitudemagphot.mag;em.opt.Rfloatnullablee_rmag? Sloan r band magnitude errormagstat.error;phot.magfloatnullableimag? Sloan i band magnitudemagphot.mag;em.opt.Ifloatnullablee_imag? Sloan i band magnitude errormagstat.error;phot.magfloatnullablel_zmagLimit flag on zmagmeta.code.errorcharzmag? Sloan z band magnitudemagphot.mag;em.opt.Ifloatnullablee_zmag? Sloan z band magnitude errormagstat.error;phot.magfloatnullableSourceFacility that obtained the datameta.id;instrcharJ/A+A/695/A42/tableb13Photometric data of AT 2019udc (NIR)Kmag? NIR K band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? NIR K band magnitude errormagstat.error;phot.magfloatnullableSourceFacility that obtained the datameta.id;instrcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharDateDate of observation (yyyymmdd)time.epochMJDModified Julian Datedtime.epochdoublel_JmagLimit flag on Jmagmeta.code.errorcharJmag? NIR J band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? NIR J band magnitude errormagstat.error;phot.magfloatnullableHmag? NIR H band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? NIR H band magnitude errormagstat.error;phot.magfloatnullablel_KmagLimit flag on Kmagmeta.code.errorcharJ/A+A/695/A42/tableb14Photometric data of AT 2019udc (DLT40)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharMJDModified Julian Datedtime.epochdoublemagDLT40 magnitudemagphot.magfloate_magDLT40 magnitude errormagstat.error;phot.magfloatJ/A+A/695/A42/tabb15-1Photometric data of NGC 300 OT (Swift)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharMJDModified Julian Datedtime.epochdoubleUVW2? Swift UVW2 magnitudemagphot.mag;em.UVfloatnullablee_UVW2? Swift UVW2 magnitude errormagstat.errorfloatnullableUVM2[- ] Swift UVM2 magnitudemagphot.mag;em.UVchare_UVM2[- ] Swift UVM2 magnitude errormagstat.errorcharl_UVW1Limit flag on UVW1meta.code.errorcharUVW1? Swift UVW1 magnitudemagphot.mag;em.UVfloatnullablee_UVW1? Swift UVW1 magnitude errormagstat.errorfloatnullablel_UmagLimit flag on Umagmeta.code.errorcharUmag? Swift U magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? Swift U magnitude errormagstat.error;phot.magfloatnullablel_BmagLimit flag on Bmagmeta.code.errorcharBmag? Swift B magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Swift B magnitude errormagstat.error;phot.magfloatnullablel_VmagLimit flag on Vmagmeta.code.errorcharVmag? Swift V magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? Swift V magnitude errormagstat.error;phot.magfloatnullableJ/A+A/695/A42/tabb15-2Photometric data of AT 2019abn (Swift)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharMJDModified Julian Datedtime.epochdoublel_UVW2Limit flag on UVW2meta.code.errorcharUVW2? Swift UVW2 magnitudemagphot.mag;em.UVfloatnullablel_UVM2Limit flag on UVM2meta.code.errorcharUVM2? Swift UVM2 magnitudemagphot.mag;em.UVfloatnullablel_UVW1Limit flag on UVW1meta.code.errorcharUVW1? Swift UVW1 magnitudemagphot.mag;em.UVfloatnullablel_UmagLimit flag on Umagmeta.code.errorcharUmag? Swift U magnitudemagphot.mag;em.opt.Ufloatnullablel_BmagLimit flag on Bmagmeta.code.errorcharBmag? Swift B magnitudemagphot.mag;em.opt.Bfloatnullablel_VmagLimit flag on Vmagmeta.code.errorcharVmag? Swift V magnitudemagphot.mag;em.opt.VfloatnullableJ/A+A/695/A42/tabb15-3Photometric data of AT 2019ahd (Swift)l_UVW1Limit flag on UVW1meta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharMJDModified Julian Datedtime.epochdoublel_UVW2Limit flag on UVW2meta.code.errorcharUVW2Swift UVW2 magnitudemagphot.mag;em.UVfloatl_UVM2Limit flag on UVM2meta.code.errorcharUVM2Swift UVM2 magnitudemagphot.mag;em.UVfloatUVW1Swift UVW1 magnitudemagphot.mag;em.UVfloatUmagSwift U magnitudemagphot.mag;em.opt.Ufloate_UmagSwift U magnitude errormagstat.error;phot.magfloatBmagSwift B magnitudemagphot.mag;em.opt.Bfloate_BmagSwift B magnitude errormagstat.error;phot.magfloatVmagSwift V magnitudemagphot.mag;em.opt.Vfloate_VmagSwift V magnitude errormagstat.error;phot.magfloatJ/A+A/695/A42/tabb15-4Photometric data of AT 2019udc (Swift)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSN namemeta.id;meta.maincharMJDModified Julian Datedtime.epochdoublel_UVW2Limit flag on UVW2meta.code.errorcharUVW2Swift UVW2 magnitudemagphot.mag;em.UVfloatl_UVM2Limit flag on UVM2meta.code.errorcharUVM2Swift UVM2 magnitudemagphot.mag;em.UVfloatl_UVW1Limit flag on UVW1meta.code.errorcharUVW1Swift UVW1 magnitudemagphot.mag;em.UVfloate_UVW1? Swift UVW1 magnitude errormagstat.errorfloatnullablel_UmagLimit flag on Umagmeta.code.errorcharUmagSwift U magnitudemagphot.mag;em.opt.Ufloate_Umag? Swift U magnitude errormagstat.error;phot.magfloatnullableBmagSwift B magnitudemagphot.mag;em.opt.Bfloate_BmagSwift B magnitude errormagstat.error;phot.magfloatVmagSwift V magnitudemagphot.mag;em.opt.Vfloate_VmagSwift V magnitude errormagstat.error;phot.magfloat