J/ApJ/819/35ivo://CDS.VizieR/J/ApJ/819/35doi:10.26093/cds/vizier.18190035CDSArcavi I.Wolf W.M.Howell D.A.Bildsten L.Leloudas G.Hardin D.,Prajs S.Perley D.A.Svirski G.Gal-Yam A.Katz B.McCully C.,Cenko S.B.Lidman C.Sullivan M.Valenti S.Astier P.Balland C.,Carlberg R.G.Conley A.Fouchez D.Guy J.Pain R.,Palanque-Delabrouille N.Perrett K.Pritchet C.J.Regnault N.Rich J.,Ruhlmann-Kleider V.2018-01-05T08:55:31Z2016-06-15T12:14:56ZCDS support team

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

cds-question@unistra.frsupernovaeinfrared-photometryvisible-astronomyWide-band photometryWe present observations of four rapidly rising (t_rise_~10days) transients with peak luminosities between those of supernovae (SNe) and superluminous SNe (M_peak_~-20) --one discovered and followed by the Palomar Transient Factory (PTF) and three by the Supernova Legacy Survey (SNLS). The light curves resemble those of SN 2011kl, recently shown to be associated with an ultra-long-duration gamma-ray burst (GRB), though no GRB was seen to accompany our SNe. The rapid rise to a luminous peak places these events in a unique part of SN phase space, challenging standard SN emission mechanisms. Spectra of the PTF event formally classify it as an SN II due to broad H{alpha} emission, but an unusual absorption feature, which can be interpreted as either high velocity H{alpha} (though deeper than in previously known cases) or SiII (as seen in SNe Ia), is also observed. We find that existing models of white dwarf detonations, CSM interaction, shock breakout in a wind (or steeper CSM), and magnetar spin down cannot readily explain the observations. We consider the possibility that a "Type 1.5 SN" scenario could be the origin of our events.2016ApJ...819...35Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/819/35CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/574/A60 : Light curve templates of SNe Ib/c from SDSS (Taddia+, 2015)J/A+A/568/A22 : Joint analysis of the SDSS-II and SNLS SNe Ia (Betoule+, 2014)J/ApJS/192/1 : Light-curve parameters from the SNLS (Conley+, 2011)J/ApJ/742/L18 : Follow-up photometry of the SN IIb PTF 11eon (Arcavi+, 2011)J/ApJ/741/97 : Light curves of Ibc supernovae (Drout+, 2011)J/MNRAS/412/1441 : SNe luminosity functions (Li+, 2011)J/A+A/506/999 : Photometric Calibration of SNLS (Regnault+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/819/35https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/819/35http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/819/35https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/819/35https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/819/35http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/819/35GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/819/35/table1 (Discovery details of events)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/819/35/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/819/35/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/819/35/table1?GETtext/xml+votable180.050000true236.378541754.04250.0055555555555555566/11347 17689 27256 48478https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/819/35?format=asciiInfraredOpticaldefaultJ/ApJ/819/35/table1Discovery details of eventsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDObject identifier (G1)meta.id;meta.maincharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainz[0.1/0.7] Redshiftsrc.redshiftfloatDateUT date of the discoverytime.epochnullablemag[19.1/23.4] Discovery magnitudemagphot.magfloate_mag[0.04/0.2] 1{sigma} uncertainty on magmagstat.error;phot.magfloatNpNumber of photometric observationsmeta.numberintnullableLCLight curves Plotmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/819/35/table2Photometric observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDObject identifier (G1)meta.id;meta.maincharTelTelescope identifier (1)meta.id;instr.telcharFiltFilter used in the observation (griz or R)instr.setup;obscharHJDHeliocentric Julian Date of observationdtime.epochdoublel_magUpper limit flag on mag (2)meta.code.errorcharmag[18.4/26.7] Observed magnitude in Filter (3)magphot.magdoublee_mag[0.01/0.4]? Error in magmagstat.error;phot.magdoublenullable