J/MNRAS/449/1941ivo://CDS.VizieR/J/MNRAS/449/1941doi:10.26093/cds/vizier.74491941CDSPastorello A.Wyrzykowski L.Valenti S.Prieto J.L.Kozlowski S.,Udalski A.Elias-Rosa N.Morales-Garoffolo A.Anderson J.P.Benetti S.,Bersten M.Botticella M.T.Cappellaro E.Fasano G.Fraser M.,Gal-Yam A.Gillone M.Graham M.L.Greiner J.Hachinger S.Howell D.A.,Inserra C.Parrent J.Rau A.Schulze S.Smartt S.J.Smith K.W.,Turatto M.Yaron O.Young D.R.Kubiak M.Szymanski M.K.,Pietrzynski G.Soszynski I.Ulaczyk K.Poleski R.Pietrukowicz P.,Skowron J.Mroz P.2024-08-14T20:20:56Z2017-12-11T12:35:43ZCDS support team

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

cds-question@unistra.frsupernovaeinfrared-photometryvisible-astronomybroad-band-photometryWe present optical observations of the peculiar Type Ibn supernova (SN Ibn) OGLE-2012-SN-006, discovered and monitored by the Optical Gravitational Lensing Experiment-IV survey, and spectroscopically followed by Public ESO Spectroscopic Survey of Transient Objects (PESSTO) at late phases. Stringent pre-discovery limits constrain the explosion epoch with fair precision to JD=2456203.8+/-4.0. The rise time to the I-band light-curve maximum is about two weeks. The object reaches the peak absolute magnitude M_I_=-19.65+/-0.19 on JD=2456218.1+/-1.8. After maximum, the light curve declines for about 25 d with a rate of 4 mag (100 d)^-1^. The symmetric I-band peak resembles that of canonical Type Ib/c supernovae (SNe), whereas SNe Ibn usually exhibit asymmetric and narrower early-time light curves. Since 25 d past maximum, the light curve flattens with a decline rate slower than that of the ^56^Co-^56^Fe decay, although at very late phases it steepens to approach that rate. However, other observables suggest that the match with the ^56^Co decay rate is a mere coincidence, and the radioactive decay is not the main mechanism powering the light curve of OGLE-2012-SN-006. An early-time spectrum is dominated by a blue continuum, with only a marginal evidence for the presence of HeI lines marking this SN type. This spectrum shows broad absorptions bluewards than 5000 {AA}, likely OII lines, which are similar to spectral features observed in superluminous SNe at early epochs. The object has been spectroscopically monitored by PESSTO from 90 to 180 d after peak, and these spectra show the typical features observed in a number of SN 2006jc-like events, including a blue spectral energy distribution and prominent and narrow ({nu}_FWHM_~1900 km/s) HeI emission lines. This suggests that the ejecta are interacting with He-rich circumstellar material. The detection of broad (10^4^ km/s) OI and CaII features likely produced in the SN ejecta (including the [OI] {lambda}{lambda}6300,6364 doublet in the latest spectra) lends support to the interpretation of OGLE-2012-SN-006 as a core-collapse event.2015MNRAS.449.1941Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/449/1941CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AcA/50/421 : OGLE-II DIA BUL_SC1 field (Wozniak, 2000)J/AcA/64/197 : OGLE-IV 2012-2014 transients (Wyrzykowski+, 2014)J/A+A/602/A93 : SN Type Ibn OGLE-2014-SN-131 lightcurveshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/449/1941https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/449/1941http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/449/1941https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/449/1941https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/449/1941http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/449/1941GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/MNRAS/449/1941/tablea1Optical photometry of OGLE-2012-SN-006recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateObservation datetime.epoch;obsnullableJDJulian Date (JD-2400000)dtime.epochdoubleUmag? U-band magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? Uncertainty in Umagmagstat.error;phot.mag;em.opt.UfloatnullableBmag? B-band magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Uncertainty in Bmagmagstat.error;phot.mag;em.opt.BfloatnullableVmag? V-band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? Uncertainty in Vmagmagstat.error;phot.mag;em.opt.VfloatnullableRmag? R-band magnitudemagphot.mag;em.opt.Rfloatnullablee_Rmag? Uncertainty in Rmagmagstat.error;phot.mag;em.opt.Rfloatnullablel_Imag[>] Limit flag on Imagmeta.code.errorcharImag? I-band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag? Uncertainty in Imagmagstat.error;phot.mag;em.opt.IfloatnullableInst[1/6] Instrument identification (G1)meta.id;instrintJ/MNRAS/449/1941/tablea2NIR photometry of OGLE-2012-SN-006recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateObservation datetime.epoch;obsnullableJDJulian Date (JD-2400000)dtime.epochdoubleJmagJ-band magnitudemagphot.mag;em.IR.Jfloate_JmagUncertainty in Jmagmagstat.error;phot.mag;em.IR.JfloatHmag? H-band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? Uncertainty in Hmagmagstat.error;phot.mag;em.IR.HfloatnullableKmag? K-band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? Uncertainty in Kmagmagstat.error;phot.mag;em.IR.KfloatnullableInst[1/6] Instrument identification (G1)meta.id;instrint