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Gall, C.Stritzinger, M.D.Ashall, C.Baron, E.Burns, C.R.Hoeflich, P.Hsiao, E.Y.Mazzali, P.A.Phillips, M.M.Filippenko, A.V.Anderson, J.P.Benetti, S.Brown, P.J.Campillay, A.Challis, P.Contreras, C.Elias De La Rosa, N.Folatelli, G.Foley, R.J.Fraser, M.Holmbo, S.Marion, G.H.Morrell, N.Pan, Y.-C.Pignata, G.Suntzeff, N.B.Taddia, F.Robledo, S.T.Valenti, S.[Two transitional type Ia supernovae located in the Fornax cluster member NGC 1404: SN 2007on and SN 2011iv]Two transitional type Ia supernovae located in the Fornax cluster member NGC 1404: SN 2007on and SN 2011iv

SNhunt151 was initially classified as a supernova (SN) impostor (nonterminal outburst of a massive star). It exhibited a slow increase in luminosity, lasting about 450 d, followed by a major brightening that reaches M V ≈ -18 mag. No source is detected to M V ≳ -13 mag in archival images at the p...


Elias-Rosa, N.Benetti, S.Cappellaro, E.Pastorello, A.Terreran, G.Morales-Garoffolo, A.Howerton, S.C.Valenti, S.Kankare, E.Drake, A.J.Djorgovski, S.G.Tomasella, L.Tartaglia, L.Kangas, T.Ochner, P.Filippenko, A.V.Ciabattari, F.Geier, S.Howell, D.A.Isern, J.Leonini, S.Pignata, G.Turatto, M.[SNhunt151: An explosive event inside a dense cocoon]SNhunt151: An explosive event inside a dense cocoon

Tomasella, L.Cappellaro, E.Pumo, M.L.Jerkstrand, A.Benetti, S.Elias-Rosa, N.Fraser, M.Inserra, C.Pastorello, A.Turatto, M.Anderson, J.P.Galbany, L.Gutiérrez, C.P.Kankare, E.Pignata, G.Terreran, G.Valenti, S.Barbarino, C.Bauer, F.E.Botticella, M.T.Chen, T.-W.Gal-Yam, A.Harutyunyan, A.Howell, D.A.Maguire, K.Garoffolo, A.M.Ochner, P.Smartt, S.J.Schulze, S.Young, D.R.Zampieri, L.[SNe 2013K and 2013am: Observed and physical properties of two slow, normal Type IIP events]SNe 2013K and 2013am: Observed and physical properties of two slow, normal Type IIP events

Smartt, SJChambers, KCSmith, KWHuber, MEYoung, DRCappellaro, EWright, DECoughlin, MSchultz, ASBDenneau, LFlewelling, HHeinze, AMagnier, EAPrimak, NRest, ASherstyuk, AStalder, BStubbs, CWTonry, JWaters, CWillman, MAnderson, JPBaltay, CBotticella, MTCampbell, HDennefeld, MChen, TWDella Valle, MElias-Rosa, NFraser, MInserra, CKankare, EKotak, RKupfer, THarmanen, JGalbany, LGal-Yam, ALe Guillou, LLyman, JDMaguire, KMitra, ANicholl, MOlivares, FRabinowitz, DRazza, ASollerman, JSmith, MTerreran, GValenti, SGibson, BGoggia, T[Pan-STARRS and PESSTO search for an optical counterpart to the LIGO gravitational-wave source GW150914]Pan-STARRS and PESSTO search for an optical counterpart to the LIGO gravitational-wave source GW150914

We present optical imaging and spectroscopy of supernova (SN) LSQ13fn, a type II supernova with several hitherto-unseen properties. Although it initially showed strong symmetric spectral emission features attributable to He ii, N iii, and C iii, reminiscent of some interacting SNe, it transitione...


Polshaw, J.Kotak, R.Dessart, L.Fraser, M.Gal-Yam, A.Inserra, C.Sim, S. A.Smartt, S. J.Sollerman, J.Baltay, C.Rabinowitz, D.Benetti, S.Botticella, M. T.Campbell, H.Chen, T.-W.Galbany, L.McKinnon, R.Nicholl, M.Smith, K. W.Sullivan, M.Takáts, K.Valenti, S.Young, D. R.[LSQ13fn: A type II-Plateau supernova with a possibly low metallicity progenitor that breaks the standardised candle relation]LSQ13fn: A type II-Plateau supernova with a possibly low metallicity progenitor that breaks the standardised candle relation

Supernova (SN) iPTF13bvn in NGC 5806 was the first Type Ib SN to have been tentatively associated with a progenitor in pre-explosion images. We performed deep ultraviolet (UV) and optical Hubble Space Telescope observations of the SN site similar to 740 days after explosion. We detect an object i...


Folatelli, GastónVan Dyk, Schuyler D.Kuncarayakti, HanindyoMaeda, KeiichiBersten, Melina C.Nomoto, Ken'ichiPignata, GiulianoHamuy, MarioQuimby, Robert M.Zheng, WeiKangFilippenko, Alexei V.Clubb, Kelsey I.Smith, NathanElias-Rosa, NancyFoley, Ryan J.Miller, Adam A.[DISAPPEARANCE OF THE PROGENITOR OF SUPERNOVA iPTF13bvn]DISAPPEARANCE OF THE PROGENITOR OF SUPERNOVA iPTF13bvn

ABSTRACT We study the properties of low–velocitymaterial in the line of sight towards nearby Type Ia Supernovae (SNe Ia) that have measured late phase nebular velocity shifts (vneb), thought to be an environment–independent observable. We have found that the distribution of equivalent widths of n...


Forster, FranciscoGonzález–Gaitán, SantiagoAnderson, JosephMarchi, SebastiánGutiérrez, Claudia P.Hamuy, MarioPignata, GiulianoCartier, Régis[Evidence for asymmetric distribution of circumstellar material around type ia supernovae.]Evidence for asymmetric distribution of circumstellar material around type ia supernovae.

Valenti, S.Fraser, M.;Benetti, S.Pignata, G.Sollerman, J.Inserra, C.Cappellaro, E.Pastorello, A.Smartt, S. J.Ergon, M.Botticella, M. T.Brimacombe, J.Bufano, F.Crockett, M.Eder, I.Fugazza, D.Haislip, J. B.Hamuy, M.Ivarsen, K. M.Kankare, E.Kotak, R.LaCluyze, A. P.Magill, L.Mattila, S.Maza, J.Mazzali, P. A.Reichart, D. E.Taubenberger, S.Turatto, M.Zampieri, L.Harutyunyan, K.M.[SN 2009jf: a slow-evolving stripped-envelope core-collapse supernova]SN 2009jf: a slow-evolving stripped-envelope core-collapse supernova

We present the complete set of ultra-violet, optical and near-infrared photometry and spectroscopy for SN 2012ca, covering the period from 6 d prior to maximum light, until 531 d after maximum. The spectroscopic time series for SN 2012ca is essentially unchanged over 1.5 yr, and appear to be domi...


Inserra, C.Fraser, M.Smartt, S. J.Benetti, S.Chen, T.-W.Childress, M.Gal-Yam, A.Howell, D. A.Kangas, T.Pignata, G.Polshaw, J.Sullivan, M.Smith, K. W.Valenti, S.Young, D. R.Parker, S.Seccull, T.McCrum, M.[On Type IIn/Ia-CSM supernovae as exemplified by SN 2012ca]On Type IIn/Ia-CSM supernovae as exemplified by SN 2012ca

We present the first results of the High Cadence Transient Survey (HiTS), a survey for which the objective is to detect and follow-up optical transients with characteristic timescales from hours to days, especially the earliest hours of supernova (SN) explosions. HiTS uses the Dark Energy Camera ...


Forster, FMaureira, JCSan Martin, JHamuy, MMartinez, JHuijse, PCabrera, GGalbany, Lde Jaeger, TGonzalez-Gaitan, SAnderson, JPKunkarayakti, HPignata, GBufano, FLittin, JOlivares, FMedina, GSmith, RCVivas, AKEstevez, PAMunoz, RVera, E[THE HIGH CADENCE TRANSIENT SURVEY (HITS). I. SURVEY DESIGN AND SUPERNOVA SHOCK BREAKOUT CONSTRAINTS]THE HIGH CADENCE TRANSIENT SURVEY (HITS). I. SURVEY DESIGN AND SUPERNOVA SHOCK BREAKOUT CONSTRAINTS

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