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Phillips, M. M.Simon, Joshua D.Morrell, NidiaBurns, Christopher R.Cox, NickFoley, Ryan J.Karakas, AmandaPatat, F.Sternberg, A.Williams, R.Gal Yam, AvishayHsiao, EricLeonard, D.Persson, SvenStritzinger, MaximilianThompson, I.Campillay, AbdoContreras, CarlosFolatelli, GastónFreedman, Wendy L.Hamuy Wackenhut, MarioRoth, MiguelShields, GregorySuntzeff, Nicholas B.Chomiuk, LauraIvans, IneseMadore, BarryPenprase, B.Perley, DanielPignata Libralato, GiulianoPreston, G.Soderberg, Alicia[On the Source of the Dust Extinction in Type Ia Supernovae and the Discovery of Anomalously Strong Na I Absorption]

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

We present observations of supernova (SN) 2008ge, which is spectroscopically similar to the peculiar SN 2002cx, and its pre-explosion site that indicate that its progenitor was probably a white dwarf. NGC 1527, the host galaxy of SN 2008ge, is an S0 galaxy with no evidence of star formation or ma...


Foley, Ryan J.Rest, ArminStritzinger, MaximilianPignata, GiulianoAnderson, Joseph P.Hamuy, MarioMorrell, Nidia I.Phillips, Mark M.Salgado, Francisco[On the progenitor and supernova of the sn 2002cx-like supernova 2008ge]On the progenitor and supernova of the sn 2002cx-like supernova 2008ge

Ultraviolet (UV) observations of Type Ia supernovae (SNe Ia) probe the outermost layers of the explosion, and UV spectra of SNe Ia are expected to be extremely sensitive to differences in progenitor composition and the details of the explosion. Here, we present the first study of a sample of high...


Foley, Ryan J.Pan, Yen-ChenBrown, P.Filippenko, A. V.Fox, O. D.Hillebrandt, W.Kirshner, R. P.Marion, G. H.Milne, P. A.Parrent, J. T.Pignata, G.Stritzinger, M. D.[Ultraviolet diversity of Type Ia Supernovae]Ultraviolet diversity of Type Ia Supernovae

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