J/ApJ/872/135ivo://CDS.VizieR/J/ApJ/872/135doi:10.26093/cds/vizier.18720135CDSKokubo M.Mitsuda K.Morokuma T.Tominaga N.Tanaka M.Moriya T.J.,Yoachim P.Ivezic Z.Sako S.Doi M.2020-11-26T11:35:57Z2020-08-27T08:51:38ZCDS support team

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

cds-question@unistra.frinfrared-photometryvisible-astronomybroad-band-photometrysupernovaeWe report the discovery of an SN 1988Z-like type IIn supernova KISS15s found in a low-mass star-forming galaxy at redshift z=0.038 during the course of the Kiso Supernova Survey (KISS). KISS15s shows long-duration optical continuum and emission line light curves, indicating that KISS15s is powered by a continuous interaction between the expanding ejecta and dense circumstellar medium (CSM). The H{alpha} emission line profile can be decomposed into four Gaussians of narrow, intermediate, blueshifted intermediate, and broad velocity width components, with a full width at half maximum of <~100, ~2000, and ~14000km/s for the narrow, intermediate, and broad components, respectively. The presence of the blueshifted intermediate component, of which the line-of-sight velocity relative to the systemic velocity is about -5000km/s, suggests that the ejecta-CSM interaction region has an inhomogeneous morphology and anisotropic expansion velocity. We found that KISS15s shows increasing infrared continuum emission, which can be interpreted as hot dust thermal emission of T~1200K from newly formed dust in a cool, dense shell in the ejecta-CSM interaction region. The progenitor mass-loss rate, inferred from bolometric luminosity, is dM/dt~0.4M_{sun}_/yr ({nu}_w_/40km/s), where {nu}_w_ is the progenitor's stellar wind velocity. This implies that the progenitor of KISS15s was a red supergiant star or a luminous blue variable that had experienced a large mass loss in the centuries before the explosion.2019ApJ...872..135Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/872/135CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)II/358 : SkyMapper Southern Sky Survey. DR1.1 (Wolf+, 2018)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/MNRAS/394/21 : Multi-epoch spectroscopy of SN 1994W (Dessart+, 2009)J/MNRAS/412/1441 : SNe luminosity functions (Li+, 2011)J/ApJ/756/173 : Type IIn SNe 2005ip & 2006jd photometry (Stritzinger+, 2012)J/ApJ/750/99 : The Pan-STARRS1 photometric system (Tonry+, 2012)J/A+A/555/A10 : Light curves of 5 type IIn supernovae (Taddia+, 2013)J/ApJ/794/120 : Sloan Digital Sky Survey coadd. Stripe 82 (Annis+, 2014)J/ApJ/787/163 : Photometric data for SN 2009ip (Graham+, 2014)J/ApJ/792/30 : NEOWISE magnitudes for near-Earth objects (Mainzer+, 2014)J/ApJ/781/42 : Optical photometry of SN 2010jl (Ofek+, 2014)J/MNRAS/449/1876 : Photometric observations of SN PTF11iqb (Smith+, 2015)J/A+A/580/A131 : Circumstellar-interacting supernovae (Taddia+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/872/135https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/872/135http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/872/135https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/872/135https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/872/135http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/872/135GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/ApJ/872/135/fig7ARC3.5-m/DIS high-resolution spectra of KISS15srecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstTelescope/Instrument descriptionmeta.notecharDateObservation datetime.epoch;obsnullablelambda[3802.3/10359.6] Wavelength in the observed-frame; in Angstrom units0.1nmem.wldoubleFlux[-77.2/62] Flux in 10^-17^erg/cm^2^/s/{AA} units; corrected for Galactic extinction1e-17cW.m**-2.nm**-1meta.unit;phot.fluxdoublee_Flux[0.2/3.7] Error in Flux1e-17cW.m**-2.nm**-1stat.error;phot.fluxfloatJ/ApJ/872/135/photomOptical and NIR photometry of KISS15s (Tables 1-7)e_mag[0.01/0.4] Error in magmagstat.error;phot.magfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument designation (1)meta.id;meta.maincharMJD[57234.7/58108.9] Modified Julian Datedtime.epochdoubleObs[2015/2017] Year of the observationtime.epochDay2? Second day of observation if anydtime.epochintnullablemag[16.9/22.7] Apparent magnitude in band; uncorrected for Galactic extinctionmagphot.magfloatBandBandpass of the observation (g, r, i, z, w; W1, W2 or H, J, Ks)meta.code;instr.filtercharJ/ApJ/872/135/fig6Nayuta/LISS and ARC3.5-m/DIS low-resolution spectra of KISS15srecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstTelescope/Instrument descriptionmeta.notecharDateObservation datetime.epoch;obsnullablelambda[3802.3/10359.6] Wavelength in the observed-frame; in Angstrom units0.1nmem.wldoubleFlux[-77.2/62] Flux in 10^-17^erg/cm^2^/s/{AA} units; corrected for Galactic extinction1e-17cW.m**-2.nm**-1meta.unit;phot.fluxdoublee_Flux[0.2/3.7] Error in Flux1e-17cW.m**-2.nm**-1stat.error;phot.fluxfloat