J/ApJ/860/68ivo://CDS.VizieR/J/ApJ/860/68doi:10.26093/cds/vizier.18600068CDSElias-Rosa N.Van Dyk S.D.Benetti S.Cappellaro E.Smith N.Kotak R.,Turatto M.Filippenko A.V.Pignata G.Fox O.D.Galbany L.,Gonzalez-Gaitan S.Miluzio M.Monard L.A.G.Ergon M.2019-08-21T10:12:48Z2019-07-19T14:42:41ZCDS support team

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

cds-question@unistra.frsupernovaeinfrared-photometryvisible-astronomybroad-band-photometryIt is well known that massive stars (M>8M_{sun}_) evolve up to the collapse of the stellar core, resulting in most cases in a supernova (SN) explosion. Their heterogeneity is related mainly to different configurations of the progenitor star at the moment of the explosion and to their immediate environments. We present photometry and spectroscopy of SN 2010bt, which was classified as a Type IIn SN from a spectrum obtained soon after discovery and was observed extensively for about 2 months. After the seasonal interruption owing to its proximity to the Sun, the SN was below the detection threshold, indicative of a rapid luminosity decline. We can identify the likely progenitor with a very luminous star (log L/L_{sun}_~7) through comparison of Hubble Space Telescope images of the host galaxy prior to explosion with those of the SN obtained after maximum light. Such a luminosity is not expected for a quiescent star, but rather for a massive star in an active phase. This progenitor candidate was later confirmed via images taken in 2015 (~5yr post-discovery), in which no bright point source was detected at the SN position. Given these results and the SN behavior, we conclude that SN 2010bt was likely a Type IIn SN and that its progenitor was a massive star that experienced an outburst shortly before the final explosion, leading to a dense H-rich circumstellar environment around the SN progenitor.2018ApJ...860...68Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/860/68CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/eso : ESO Science Archive Catalog (ESO, 1991-2019)B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)II/179 : Southern Spectrophotometric Standards. I+II (Hamuy+ 1992,94)J/MNRAS/408/181 : CN2002ch UBVRI and ugriz light curves (Pastorello+, 2010)J/MNRAS/412/1441 : SNe luminosity functions (Li+, 2011)J/A+A/538/A120 : A unified supernova catalogue (Lennarz+, 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/788/154 : Palomar Transient Factory SNe IIn photometry (Ofek+, 2014)J/ApJ/795/142 : Defining photometric peculiar SNIa (Gonzalez-Gaitan+, 2014)J/MNRAS/445/2440 : SN with associated Planck CMB temperatures (Yershov+, 2014)J/AJ/151/33 : UBVRIz light curves of 51 Type II SNe (Galbany+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/860/68https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/860/68http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/860/68https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/860/68https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/860/68http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/860/68GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap7.952274030004205e-20 6.118840631666147e-19OpticalInfrareddefaultJ/ApJ/860/68/photOptical Johnson-Cousins photometry of SN 2010bt (Table 3) and NIR photometry (Table 4) -- VEGAMAGl_UmagLimit flag on Umagmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observationtime.epochnullableMJD[52134/57309] Modified julian date of observationtime.epochfloatPhasePhase of observation relative to discovery (discovery MJD=55303.1)dtime.phasefloatUmag[16.88/18.3]? The U band magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag[0.14/0.39]? The one sigma error in Umagmagstat.error;phot.mag;em.opt.Ufloatnullablel_BmagLimit flag on Bmagmeta.code.errorcharBmag[17.0/21.3]? The B band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag[0.03/0.34]? The one sigma error in Bmagmagstat.error;phot.mag;em.opt.Bfloatnullablel_VmagLimit flag on Vmagmeta.code.errorcharVmag[16.33/24.4]? The V band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag[0.03/0.38]? The one sigma error in Vmagmagstat.error;phot.mag;em.opt.Vfloatnullablel_RmagLimit flag on Rmagmeta.code.errorcharRmag[16.0/20.2]? The R band magnitudemagphot.mag;em.opt.Rfloatnullablee_Rmag[0.04/0.41]? The one sigma error in Rmagmagstat.error;phot.mag;em.opt.Rfloatnullablel_ImagLimit flag on Imagmeta.code.errorcharImag[15.79/19.7]? The I band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag[0.04/0.14]? The one sigma error in Imagmagstat.error;phot.mag;em.opt.Ifloatnullablel_JmagLimit flag on Jmagmeta.code.errorcharJmag? The J band magnitudemagphot.mag;em.IR.Jfloatnullablel_HmagLimit flag on Hmagmeta.code.errorcharHmag? The H band magnitudemagphot.mag;em.IR.Hfloatnullablel_KmagLimit flag on Kmagmeta.code.errorcharKmag? The K band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? The one sigma error in Kmagmagstat.error;phot.mag;em.IR.KfloatnullableInstInstrument key (1)instrchar