J/ApJ/938/19ivo://CDS.VizieR/J/ApJ/938/19doi:10.26093/cds/vizier.19380019CDSAndrews J.E.Pearson J.Lundquist M.J.Sand D.J.Jencson J.E.,Bostroem K.A.Hosseinzadeh G.Valenti S.Smith N.Amaro R.C.Dong Y.,Janzen D.Meza N.Wyatt S.Burke J.Hiramatsu D.Howell D.A.,McCully C.Pellegrino C.2025-05-22T20:12:04Z2024-09-24T08:51:01ZCDS support team

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

cds-question@unistra.frsupernovaephotometryvisible-astronomyspectroscopyWe present photometric and spectroscopic observations of the nearby (D~28Mpc) interacting supernova (SN) 2019esa, discovered within hours of explosion and serendipitously observed by the Transiting Exoplanet Survey Satellite (TESS). Early, high-cadence light curves from both TESS and the DLT40 survey tightly constrain the time of explosion, and show a 30 day rise to maximum light followed by a near-constant linear decline in luminosity. Optical spectroscopy over the first 40 days revealed a reddened object with narrow Balmer emission lines seen in Type IIn SNe. The slow rise to maximum in the optical light curve combined with the lack of broad H{alpha} emission suggest the presence of very optically thick and close circumstellar material (CSM) that quickly decelerated the SN ejecta. This CSM was likely created from a massive star progenitor with an dM/dt~0.2M_{sun}_/yr lost in a previous eruptive episode 3-4yr before eruption, similar to giant eruptions of luminous blue variable stars. At late times, strong intermediate-width CaII, FeI, and FeII lines are seen in the optical spectra, identical to those seen in the superluminous interacting SN 2006gy. The strong CSM interaction masks the underlying explosion mechanism in SN 2019esa, but the combination of the luminosity, strength of the H{alpha} lines, and mass-loss rate of the progenitor seem to be inconsistent with a Type Ia CSM model and instead point to a core-collapse origin.2022ApJ...938...19Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/938/19CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/419/215 : em. lines of strontium filament near eta Car (Hartman+, 2004)J/ApJ/756/173 : Phot. of type IIn SNe 2005ip and 2006jd (Stritzinger+, 2012)J/MNRAS/433/1312 : SN2009ip UBVRI, UVOT and JHK light curves (Fraser+, 2013)J/A+A/555/A10 : Light curves of 5 type IIn supernovae (Taddia+, 2013)J/ApJ/787/163 : Photometric data for SN 2009ip (Graham+, 2014)J/MNRAS/438/L101 : First month on SN 2013ej (Valenti+, 2014)J/MNRAS/446/3895 : The rising light curves of Type Ia supernovae (Firth+, 2015)J/MNRAS/449/1876 : Photometric observations of SN PTF11iqb (Smith+, 2015)J/AJ/152/50 : Cosmicflows-3 catalog (CF3) (Tully+, 2016)J/MNRAS/459/3939 : Type II supernova light curves (Valenti+, 2016)J/AJ/154/211 : The CSP (DR3): photometry of low-z SNe Ia (Krisciunas+, 2017)J/ApJ/853/62 : Optical & NIR spectra and LCs of SN2016ija (Tartaglia+, 2018)J/A+A/630/A75 : Six luminous red novae photometry (Pastorello+, 2019)J/MNRAS/483/628 : SNIa properties using bolometric light curves (Scalzo+, 2019)J/A+A/637/A73 : Type IIn supernova photometry (Nyholm+, 2020)J/A+A/635/A39 : Photometry of SN 2015da (Tartaglia+, 2020)J/A+A/637/A20 : AT 2019abn: multi-wavelength observations (Williams+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/938/19https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/938/19http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/938/19https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/938/19https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/938/19http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/938/19GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/938/19/fig2Optical photometry of SN 2019esarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJD[58609.15/59003.45] Modified Julian Datedtime.epochdoubleFiltFilter (UBV, r, gp,rp,ip) (1)meta.id;instr.filtercharmag[14.26/20.3] Apparent magnitude in Filtmagphot.mag;em.optfloate_mag[0.01/0.1] Uncertainty in magmagstat.error;phot.mag;em.optfloatJ/ApJ/938/19/table1Optical spectroscopy of SN 2019esaMJD[58609.38/59180.3] Modified Julian Datedtime.epochdoublePhase[1/572] Days after explosion (MJD58608.44, 2019 May 5.94)dtime.intervalintTelTelescope and InstrumentinstrcharR[400/750] Resolution ({lambda}/{Delta}{lambda})spect.resolutionintExp[1500/3600] Exposure timestime.duration;obs.exposureintspInteractive spectrum plotmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateObservation date (UT)time.epoch;obsnullableJ/ApJ/938/19/fig4Optical spectroscopic evolution of SN 2019esarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObs[AB] Observation code (1)meta.codecharDateObservation date (UT)time.epoch;obsnullableindexedlambda[3499.1/10000.5] Wavelength; Angstroms0.1nmem.wlfloatFlux[-3.5e-16/1.7e-14] Flux density (2)mW.m**-2phot.fluxdouble