J/A+A/635/A39ivo://CDS.VizieR/J/A+A/635/A39doi:10.26093/cds/vizier.36350039CDSTartaglia L.Pastorello A.Sollerman E.Fransson C.Mattila S.,Fraser M.Taddia F.Tomasella L.Turatto M.Morales-Garoffolo A.,Elias-Rosa N.Lundqvist P.Harmanen J.Reynolds T.Cappellaro E.,Barbarino C.Nyholm A.Kool E.Ofek E.Gao X.Jin Z.Tan H.,Sand D.J.Ciabattari F.Wang X.Zhang J.Huang F.Li W.Mo J.Rui L.,Xiang D.Zhang T.Hosseinzadeh G.Howell D.A.McCully C.Valenti S.,Benetti S.Callis E.Carracedo A.S.Fremling C.Kangas T.Rubin A.,Somero A.Terreran G.2020-08-20T07:29:52Z2020-03-04T07:35:49ZCDS support team

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

cds-question@unistra.frsupernovaeinfrared-photometryvisible-astronomysloan-photometryIn this paper we report the results of the first ~four years of spectroscopic and photometric monitoring of the Type IIn supernova SN 2015da (also known as PSN J13522411+3941286, or iPTF16tu). The supernova exploded in the nearby spiral galaxy NGC 5337 in a relatively highly extinguished environment. The transient showed prominent narrow Balmer lines in emission at all times and a slow rise to maximum in all bands. In addition, early observations performed by amateur astronomers give a very well-constrained explosion epoch. The observables are consistent with continuous interaction between the supernova ejecta and a dense and extended H-rich circumstellar medium. The presence of such an extended and dense medium is difficult to reconcile with standard stellar evolution models, since the metallicity at the position of SN 2015da seems to be slightly subsolar. Interaction is likely the mechanism powering the light curve, as confirmed by the analysis of the pseudo bolometric light curve, which gives a total radiated energy >~10^51^erg. Modeling the light curve in the context of a supernova shock breakout through a dense circumstellar medium allowed us to infer the mass of the prexisting gas to be ~=8M_{sun}_, with an extreme mass-loss rate for the progenitor star ~=0.6M_{sun}_/yr, suggesting that most of the circumstellar gas was produced during multiple eruptive events. Near- and mid-infrared observations reveal a fluxexcess in these domains, similar to those observed in SN 2010jl and other interacting transients, likely due to preexisting radiatively heated dust surrounding the supernova. By modeling the infrared excess, we infer a mass >~0.4x10^-3^M_{sun}_ for the dust.2020A&A...635A..39Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/635/A39CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/635/A39https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/635/A39http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/635/A39https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/635/A39https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/635/A39http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/635/A39GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap7.952274030004205e-20 6.118840631666147e-19OpticalInfrareddefaultJ/A+A/635/A39/tablea2Sloan ugriz (ABmag) photometry of SN 2015darecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation (yyyymmdd)time.epochintMJDModified Julian Date (JD-2400000)dtime.epochdoublel_umagLimit flag on umagmeta.code.errorcharumag? u magnitude (AB)magphot.mag;em.opt.Ufloatnullablee_umag? Error on umag (AB)magstat.error;phot.mag;em.opt.Ufloatnullablel_gmagLimit flag on gmagmeta.code.errorchargmag? g magnitude (AB)magphot.mag;em.opt.Bfloatnullablee_gmag? Error on gmag (AB)magstat.error;phot.mag;em.opt.Bfloatnullablel_rmagLimit flag on rmagmeta.code.errorcharrmag? r magnitude (AB)magphot.mag;em.opt.Rfloatnullablee_rmag? Error on rmag (AB)magstat.error;phot.mag;em.opt.Rfloatnullablel_imagLimit flag on imagmeta.code.errorcharimag? i magnitude (AB)magphot.mag;em.opt.Ifloatnullablee_imag? Error on imag (AB)magstat.error;phot.mag;em.opt.Ifloatnullablel_zmagLimit flag on zmagmeta.code.errorcharzmag? z magnitude (AB)magphot.mag;em.opt.Ifloatnullablee_zmag? Error on zmag (AB)magstat.error;phot.mag;em.opt.IfloatnullableTelTelescope numerical code (1)meta.codeintJ/A+A/635/A39/tablea4WISE W1 W2 (VegaMag) photometry of SN 2015darecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation (yyyymmdd)time.epochintMJDModified Julian Date (JD-2400000)dtime.epochdoubleW1magW1 magnitude (Vega)magphot.mag;em.IR.3-4umfloate_W1magError on W1mag (Vega)magstat.error;phot.magfloatW2magW2 magnitude (Vega)magphot.mag;em.IR.4-8umfloate_W2magError on W2mag (Vega)magstat.error;phot.magfloatTelTelescope numerical code (1)meta.codeintJ/A+A/635/A39/tablea1Johnson-Cousins UBVRI (VegaMag) photometry of SN 2015dal_VmagLimit flag on Vmagmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation (yyyymmdd)time.epochintMJDModified Julian Date (JD-2400000)dtime.epochdoubleUmag? U magnitude (Vega)magphot.mag;em.opt.Ufloatnullablee_Umag? Error on Umag (Vega)magstat.error;phot.mag;em.opt.Ufloatnullablel_BmagLimit flag on Bmagmeta.code.errorcharBmag? B magnitude (Vega)magphot.mag;em.opt.Bfloatnullablee_Bmag? Error on Bmag (Vega)magstat.error;phot.mag;em.opt.BfloatnullableVmag? V magnitude (Vega)magphot.mag;em.opt.Vfloatnullablee_Vmag? Error on Vmag (Vega)magstat.error;phot.mag;em.opt.Vfloatnullablel_RmagLimit flag on Rmagmeta.code.errorcharRmag? R magnitude (Vega)magphot.mag;em.opt.Rfloatnullablee_Rmag? Error on Rmag (Vega)magstat.error;phot.mag;em.opt.Rfloatnullablel_ImagLimit flag on Imagmeta.code.errorcharImag? I magnitude (Vega)magphot.mag;em.opt.Ifloatnullablee_Imag? Error on Imag (Vega)magstat.error;phot.mag;em.opt.IfloatnullableTelTelescope numerical code (1)meta.codeintJ/A+A/635/A39/tablea3JHK (VegaMag) photometry of SN 2015darecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation (yyyymmdd)time.epochintMJDModified Julian Date (JD-2400000)dtime.epochdoubleJmag? J magnitude (Vega)magphot.mag;em.IR.Jfloatnullablee_Jmag? Error on Jmag (Vega)magstat.error;phot.mag;em.IR.JfloatnullableHmag? H magnitude (Vega)magphot.mag;em.IR.Hfloatnullablee_Hmag? Error on Hmag (Vega)magstat.error;phot.mag;em.IR.HfloatnullableKmag? K magnitude (Vega)magphot.mag;em.IR.Kfloatnullablee_Kmag? Error on Kmag (Vega)magstat.error;phot.mag;em.IR.KfloatnullableTelTelescope numerical code (1)meta.codeint