J/ApJ/835/58ivo://CDS.VizieR/J/ApJ/835/58doi:10.26093/cds/vizier.18350058CDSVreeswijk P.M.Leloudas G.Gal-Yam A.De Cia A.Perley D.A.,Quimby R.M.Waldman R.Sullivan M.Yan L.Ofek E.O.Fremling C.,Taddia F.Sollerman J.Valenti S.Arcavi I.Howell D.A.,Filippenko A.V.Cenko S.B.Yaron O.Kasliwal M.M.Cao Y.Ben-Ami S.,Horesh A.Rubin A.Lunnan R.Nugent P.E.Laher R.Rebbapragada U.D.,Wozniak P.Kulkarni S.R.2017-09-04T07:51:03Z2017-09-01T13:00:34ZCDS support team

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

cds-question@unistra.frsupernovaeinfrared-photometryvisible-astronomyWide-band photometryspectroscopyWe present the light curves of the hydrogen-poor superluminous supernovae (SLSNe I) PTF 12dam and iPTF 13dcc, discovered by the (intermediate) Palomar Transient Factory. Both show excess emission at early times and a slowly declining light curve at late times. The early bump in PTF 12dam is very similar in duration (~10days) and brightness relative to the main peak (2-3mag fainter) compared to that observed in other SLSNe I. In contrast, the long-duration (>30days) early excess emission in iPTF 13dcc, whose brightness competes with that of the main peak, appears to be of a different nature. We construct bolometric light curves for both targets, and fit a variety of light-curve models to both the early bump and main peak in an attempt to understand the nature of these explosions. Even though the slope of the late-time decline in the light curves of both SLSNe is suggestively close to that expected from the radioactive decay of ^56^Ni and ^56^Co, the amount of nickel required to power the full light curves is too large considering the estimated ejecta mass. The magnetar model including an increasing escape fraction provides a reasonable description of the PTF 12dam observations. However, neither the basic nor the double-peaked magnetar model is capable of reproducing the light curve of iPTF 13dcc. A model combining a shock breakout in an extended envelope with late-time magnetar energy injection provides a reasonable fit to the iPTF 13dcc observations. Finally, we find that the light curves of both PTF 12dam and iPTF 13dcc can be adequately fit with the model involving interaction with the circumstellar medium.2017ApJ...835...58Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/835/58CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)J/ApJ/690/1358 : Spectra of unusual optical transient SCP 06F6 (Barbary+, 2009)J/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009)J/ApJ/788/154 : Palomar Transient Factory SNe IIn photometry (Ofek+, 2014)J/ApJ/795/142 : Defining photometric peculiar SNe Ia (Gonzalez-Gaitan+, 2014)J/ApJ/830/13 : Host-galaxy NUV-NIR data of superluminous SNe (Perley+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/835/58https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/835/58http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/835/58https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/835/58https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/835/58http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/835/58GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfraredOpticaldefaultJ/ApJ/835/58/fig5Time series of spectra of iPTF13dccrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateUT date of the observationtime.epoch;obsnullableInstInstrument used in the observation (1)instr.setup;obscharlambda[3250/10000] Wavelength in Angstroms0.1nmem.wlfloatFluxObserved flux density; erg/s/cm^2^/Angstroms (2)cW.m**-2.nm**-1phot.fluxdoubleJ/ApJ/835/58/table10Log of observations of PTF 12damrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDModified Julian Date of the observationdtime.epochdoublePhaseSupernova rest-frame phase (1)dtime.phasefloatTelTelescope used in the observation (P60, P48, LCOGT or Keck 1; see the section "Description" above)instr.setup;obscharFilt[BRgri] Filter used in the observation (BRgri)instr.setup;obscharl_magLimit flag on magmeta.code.errorcharmag[16.7/22.5] Apparent AB magnitude in Filt (2)magphot.magfloate_mag[0.01/0.4]? Uncertainty in magmagstat.error;phot.magfloatnullableJ/ApJ/835/58/table11Log of observations of iPTF 13dccrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDModified Julian Date of the observationdtime.epochdoublePhaseSupernova rest-frame phase (1)dtime.phasefloatTelTelescope used in the observation (P48, P60, DCT or HST; see the section "Description" above)instr.setup;obscharFiltFilter used in the observation (Rgri and F625W)instr.setup;obscharmag[19/25] Apparent AB magnitude in Filt (2)magphot.magfloate_mag[0.03/0.3]? Uncertainty in magmagstat.error;phot.magfloatnullable