J/ApJ/964/172ivo://CDS.VizieR/J/ApJ/964/172CDSBaer-Way R.DeGraw A.Zheng W.Van Dyk S.D.Filippenko A.V.Fox O.D.,Brink T.G.Kelly P.L.Smith N.Vasylyev S.S.de Jaeger T.Zhang K.,Stegman S.Ross T.Yunus S.2026-08-20T09:02:20Z2026-08-20T09:26:50ZCDS support team

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

cds-question@unistra.frsupernovaehst-photometryinfrared-photometryvisible-astronomybroad-band-photometryOver recent decades, robotic (or highly automated) searches for supernovae (SNe) have discovered several thousand events, many of them in quite nearby galaxies (distances <30Mpc). Most of these SNe, including some of the best-studied events to date, were found before maximum brightness and have associated with them extensive follow-up photometry and spectroscopy. Some of these discoveries are so-called "SN impostors," thought to be superoutbursts of luminous blue variable stars, although possibly a new, weak class of massive-star explosions. We conducted a Snapshot program with the Hubble Space Telescope (HST) and obtained images of the sites of 31 SNe and four impostors, to acquire late-time photometry through two filters. The primary aim of this project was to reveal the origin of any lingering energy for each event, whether it is the result of radioactive decay or, in some cases, ongoing late-time interaction of the SN shock with preexisting circumstellar matter, or the presence of a light echo. Alternatively, lingering faint light at the SN position may arise from an underlying stellar population (e.g., a host star cluster, companion star, or a chance alignment). The results from this study complement and extend those from Snapshot programs by various investigators in previous HST cycles.2024ApJ...964..172Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/964/172CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)B/hst : HST Archived Exposures Catalog (STScI, 2007)J/MNRAS/408/181 : CN2002ch UBVRI and ugriz light curves (Pastorello+, 2010)J/ApJ/742/L18 : Follow-up photometry of SNIIb PTF 11eon (Arcavi+, 2011)J/AJ/144/131 : Photometry and spectroscopy of SN 2010jl (Zhang+, 2012)J/MNRAS/433/1871 : UBVRI griz light curves of SN 2012aw (Bose+, 2013)J/other/Nat/494.65 : SN 2010mc outburst before explosion (Ofek+, 2013)J/A+A/562/A17 : SN 2011dh - The first 100 days (Ergon+, 2014)J/ApJ/781/42 : Optical photometry of SN 2010jl (Ofek+, 2014)J/ApJS/215/9 : PHAT X. UV-IR photometry of M31 stars (Williams+, 2014)J/A+A/580/A142 : SN 2011dh. The first two years (Ergon+, 2015)J/ApJ/861/63 : Type IIP SN 2016bkv LCs and spectra (Hosseinzadeh+, 2018)J/MNRAS/487/832 : BVRI photometry of the Type II-P SN 2017eaw (Buta+, 2019)J/ApJS/241/38 : A comprehensive analysis of Spitzer SNe (Szalai+, 2019)J/ApJ/883/147 : LCs of the H-stripped SN2016coi (Terreran+, 2019)J/ApJ/875/136 : BVRI, sp. & IR obs. of SN2017eaw (Van Dyk+, 2019)J/ApJ/894/111 : Gemini/GMOS-S sp. of the type IIn SN 2010jl (Bevan+, 2020)J/ApJ/895/31 : Photometric obs. of Type II SN 2018ivc (Bostroem+, 2020)J/ApJ/898/166 : UV to NIR obs. of SN 2019ehk (Jacobson-Galan+, 2020)J/ApJ/900/11 : Sp. of SN 2017eaw after explosion (Weil+, 2020)J/A+A/655/A105 : 3 SN multiwavelength light curves (Sollerman+, 2021)J/ApJ/910/42 : LCs and spectroscopic obs. of AT2018cow (Xiang+, 2021)J/ApJ/939/105 : X-ray SN2014C obs. (Brethauer+, 2022)J/ApJ/924/55 : UV and optical obs. of type Ic SN 2020oi (Gagliano+, 2022)J/ApJ/930/34 : HCT sp. obs. of the type IIP SN 2020jfo (Teja+, 2022)J/ApJ/954/155 : Type IIP supernova SN 2018gj follow-up obs. (Teja+, 2023)http://www.wis-tns.org/ : Transient Name Server (TNS) home pagehttp://mast.stsci.edu/search/ui/#/hst : HST data on MASThttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/964/172https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/964/172http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/964/172https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/964/172https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/964/172http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/964/172GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/964/172/targets (Properties of the targeted events and their hosts (Table 1) and HST photometry of the observed supernovae (Table 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/964/172/targets?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/964/172/targets?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/964/172/targets?GETtext/xml+votable180.050000true162.9587516.00028060.0055555555555555566/821 3073 4181 5504 5715 7606 7975 7997 8106 8565 9702 10912 11027 11263 12122 12641 13522 15593 15915 15955 17754 18398 26303 27514 27643 28035 28291 28496 28529 30970 33921 35691 37429 43262https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/964/172?format=asciiOpticalInfrareddefaultJ/ApJ/964/172/targetsProperties of the targeted events and their hosts (Table 1) and HST photometry of the observed supernovae (Table 2)SNSupernova identifier (SNYYYYaaa or ATYYYYaaa)meta.id;meta.maincharprimarySimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlcharBand1First photometric band usedmeta.code;instr.filtercharBand2Second photometric band usedmeta.code;instr.filtercharl_mag1Limit flag on mag1meta.code.errorcharl_mag2Limit flag on mag2meta.code.errorcharDecl?Exponential decline?meta.codecharf_SNlc: Photometry available in Table 4; column added by CDSmeta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypeSN typesrc.spTypecharRAJ2000TNS Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000TNS Degree of Declination (J2000)pos.eq.dec;meta.mainDiscTNS discovery date (UT)time.epochnullableHostHost galaxy identifiermeta.id.parentcharAv[0.04/1.02] Milky Way V band extinction from NEDmagphys.absorptionfloatDist[3.6/70.7]? Distance from NEDMpcpos.distancefloatnullablee_Dist[0.2/11]? Uncertainty in DistMpcstat.error;pos.distancefloatnullablevHel[-39/10493]? Host heliocentric velocity from NEDkm/sphys.veloc;pos.heliocentricintnullablee_vHel[1/49]? Uncertainty in vHelkm/sstat.error;phys.veloc;pos.heliocentricintnullableDateUTC observation datetime.epoch;obsnullableMJD[59164.8/59481.3] Modified Julian Date of observationdtime.epochfloatAge[291.9/11757.8] Days since discoverydtime.agefloatExp1[710/780] Exposure time in Band1stime.duration;obs.exposureintExp2[710/780] Exposure time in Band2stime.duration;obs.exposureintmag1[19.5/27.4] Apparent Vega magnitude in Band1magphot.magfloate_mag1[0/0.1]? Uncertainty in mag1magstat.error;phot.magfloatnullablemag2[18.54/27.2] Apparent Vega magnitude in Band2magphot.magfloate_mag2[0/0.13]? Uncertainty in mag2magstat.error;phot.magfloatnullableNpNumber of photometry measurements for this SN (link to Table 4)meta.numberintnullableJ/ApJ/964/172/table4Photometry of seven supernovae with unpublished dataSNSupernova identifier (SNYYYYaaa)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[57470.3/59138.12] Modified Julian Datedtime.epochdoubleBmag[14.6/21.72]? Apparent B filter Vega magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag[0.01/1.1]? Uncertainty in Bmagmagstat.error;phot.mag;em.opt.BfloatnullableVmag[14.75/20.79]? Apparent V filter Vega magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag[0.008/1.3]? Uncertainty in Vmagmagstat.error;phot.mag;em.opt.VfloatnullableRmag[14.51/20.13]? Apparent R filter Vega magnitudemagphot.mag;em.opt.Rfloatnullablee_Rmag[0.009/0.9]? Uncertainty in Rmagmagstat.error;phot.mag;em.opt.RfloatnullableCmag[14.43/20.09]? Apparent clear filter Vega magnitudemagphot.mag;em.optfloatnullablee_Cmag[0.009/1.3]? Uncertainty in Cmagmagstat.error;phot.mag;em.optfloatnullableImag[14.2/19.5]? Apparent I filter Vega magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag[0.013/1.2]? Uncertainty in Imagmagstat.error;phot.mag;em.opt.Ifloatnullable