Now showing items 1-8 of 8

    • Disappearance of the progenitor of supernova iptf13bvn 

      Folatelli, Gastón; Van Dyk, Schuyler D.; Kuncarayakti, Hanindyo; Maeda, Keiichi; Bersten, Melina C.; Nomoto, Ken'ichi; Pignata Libralato, Giuliano; Hamuy Wackenhut, Mario; Quimby, Robert M.; Zheng, WeiKang; Filippenko, Alexei V.; Clubb, Kelsey I.; Smith, Nathan; Elias Rosa, Nancy; Foley, Ryan J.; Miller, Adam A. (IOP Publishing, 2016)
      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 ...
    • Effects of the explosion asymmetry and viewing angle on the Type Ia supernova colour and luminosity calibration 

      Maeda, Keiichi; Leloudas, Giorgos; Taubenberger, Stefan; Stritzinger, Maximilian; Sollerman, Jesper; Elias Rosa, Nancy; Benetti, Stefano; Hamuy Wackenhut, Mario; Folatelli, Gastón; Mazzali, Paolo (2011)
      Phenomenological relations exist between the peak luminosity and other observables of type Ia supernovae (SNe Ia) that allow one to standardize their peak luminosities. However, several issues are yet to be clarified: ...
    • ESC supernova spectroscopy of non-ESC targets 

      Harutyunyan, A.; Pfahler, P.; Pastorello, A.; Taubenberger, S.; Turatto, M.; Cappellaro, E.; Benetti, Stefano; Elias-Rosa, Nancy; Navasardyan, H.; Valenti, S.; Stanishev, V.; Patat, F.; Riello, M.; Pignata Libralato, Giuliano; Hillebrandt, W. (EDP SCIENCES S A, 2008-09)
      Aims. We present the spectra of 36 supernovae (SNe) of various types, obtained by the European Supernova Collaboration. Because of the spectral classification and the phase determination at their discovery the SNe did not ...
    • High luminosity, slow ejecta and persistent carbon lines: SN 2009dc challenges thermonuclear explosion scenarios 

      Taubenberger, S.; Benetti, S.; Childress, M.; Pakmor, R.; Hachinger, S.; Mazzali, Paolo; Stanishev, V.; Elias-Rosa, Nancy; Agnoletto, I.; Bufano, Filomena; Ergon, M.; Harutyunyan, A.; Inserra, C.; Kankare, E.; Kromer, M.; Navasardyan, H.; Nicolas, J.; Pastorello, A.; Prosperi, E.; Salgado, F.; Sollerman, J.; Stritzinger, M.; Turatto, M.; Valenti, S.; Hillebrandt, W. (WILEY-BLACKWELL, 2011-04)
      Extended optical and near-IR observations reveal that SN 2009dc shares a number of similarities with normal Type Ia supernovae (SNe Ia), but is clearly overluminous, with a (pseudo-bolometric) peak luminosity of log (L) = ...
    • ON THE PROGENITOR OF THE TYPE II-PLATEAU SN 2008cn in NGC 4603 

      Elias-Rosa, Nancy; Van Dyk, Schuyler D.; Li, Weidong; Morrell, Nidia; González Tagle, Sergio; Hamuy Wackenhut, Mario; Filippenko, Alexei V.; Cuillandre, Jean-Charles; Foley, Ryan J.; Smith, Nathan (American Astronomical Society, 2009-12-01)
      A trend is emerging regarding the progenitor stars that give rise to the most common core-collapse supernovae (SNe), those of Type II-Plateau (II-P): they generally appear to be red supergiants with a limited range of ...
    • The outermost ejecta of Type Ia supernovae 

      Tanaka, Masaomi; Mazzali, Paolo; Benetti, Stefano; Nomoto, Ken’ichi; Elias-Rosa, Nancy; Kotak, Rubina; Pignata Libralato, Giuliano; Stanishev, Vallery; Hachinger, Stephan (UNIV CHICAGO PRESS, 2008-04-10)
      The properties of the highest velocity ejecta of normal Type Ia supernovae (SNe Ia) are studied via models of very early optical spectra of six SNe. At epochs earlier than 1 week before maximum, SNe with a rapidly evolving ...
    • SN 2011A: A Low-Luminosity Interacting Transient With A Double Plateau And Strong Sodium Absorption 

      De Jaeger, Thomas; Anderson, J. P.; Pignata Libralato, Giuliano; Hamuy Wackenhut, Mario; Kankare, E.; Stritzinger, M. D.; Benetti, S.; Bufano, Filomena; Elias-Rosa, Nancy; Folatelli, Gastón; Forster, Francisco; González Gaitán, Santiago; Gutiérrez, C. P.; Inserra, C.; Kotak, R.; Lira Teillery, Paulina; Morrell, N.; Taddia, F.; Tomasella, L. (IOP Publisihing, 2015)
      We present optical photometry and spectroscopy of the optical transient SN 2011A. Our data span 140 days after discovery including BVRI u'g'r'i'z' photometry and 11 epochs of optical spectroscopy. Originally classified as ...
    • SUPERNOVA 2008bk AND ITS RED SUPERGIANT PROGENITOR 

      Van Dyk, Schuyler D.; Davidge, Tim J.; Elias-Rosa, Nancy; Taubenberger, Stefan; Li, Weidong; Levesque, Emily M.; Howerton, Stanley; Pignata Libralato, Giuliano; Morrell, Nidia; Hamuy Wackenhut, Mario; Filippenko, Alexei V. (IOP PUBLISHING LTD, 2012-01)
      We have obtained limited photometric and spectroscopic data for supernova (SN) 2008bk in NGC 7793, primarily at greater than or similar to 150 days after explosion. We find that it is a Type II-Plateau (II-P) SN that most ...