Now showing items 1-16 of 16

    • Constraining cosmic evolution of type Ia supernovae 

      Foley, Ryan J.; Filippenko, Alexei V.; Aguilera, C.; Becker, A. C.; Blondin, S.; Challis, P.; Clocchiatti, A.; Covarrubias, R.; Davis, Tamara M.; Garnavich, Peter M.; Jha, S.; Kirshner, Robert P.; Krisciunas, Kevin; Leibundgut, B.; Li, Weidong; Matheson, Thomas; Miceli, A.; Miknaitis, G.; Pignata Libralato, Giuliano; Rest, A.; Riess, A. G.; Schmidt, Brian P.; Smith, R. C.; Sollerman, J.; Spyromilio, J.; Stubbs, C. W.; Tonry, J. L.; Suntzeff, Nicholas B.; Wood-Vasey, W. M.; Zenteno, A. (UNIV CHICAGO PRESS, 2008-09-01)
      We present a large-scale effort of creating composite spectra of high-redshift SNe Ia and comparing them to low-redshift counterparts in an attempt to understand possible cosmic evolution of SNe Ia, which has major ...
    • 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 ...
    • Exploring the outer solar system with the ESSENCE Supernova Survey 

      Becker, A. C.; Arraki, K.; Kaib, N. A.; Wood-Vasey, W. M.; Aguilera, C.; Blackman, J. W.; Blondin, S.; Challis, P.; Clocchiatti, A.; Covarrubias, R.; Damke, G.; Davis, Tamara M.; Filippenko, Alexei V.; Foley, Ryan J.; Garg, A.; Garnavich, Peter M.; Hicken, M.; Jha, S.; Kirshner, Robert P.; Krisciunas, Kevin; Leibundgut, B.; Li, Weidong; Matheson, Thomas; Miceli, A.; Miknaitis, G.; Narayan, G.; Pignata Libralato, Giuliano; Prieto, J. L.; Rest, A.; Riess, A. G.; Salvo, M. E.; Schmidt, Brian P.; Smith, R. C.; Sollerman, J.; Spyromilio, J.; Stubbs, C. W.; Suntzeff, Nicholas B.; Tonry, J. L.; Zenteno, A. (UNIV CHICAGO PRESS, 2008-07-20)
      We report the discovery and orbital determination of 14 trans-Neptunian objects (TNOs) from the ESSENCE Supernova Survey difference imaging data set. Two additional objects discovered in a similar search of the SDSS-II ...
    • A faint type of supernova from a white dwarf with a helium-rich companion 

      Perets, Hagai B.; Gal Yam, Avishay; Mazzali, Paolo; Arnett, D.; Kagan, D.; Filippenko, Alexei V.; Li, Weidong; Arcavi, I.; Cenko, S. Bradley; Fox, D. B.; Leonard, D. C.; Moon, D.-S.; Sand, D. J.; Soderberg, A. M.; Anderson, Joseph P.; James, P. A.; Foley, Ryan J.; Ganeshalingam, Mohan; Ofek, E. O.; Bildsten, L.; Nelemans, G.; Shen, K. J.; Weinberg, N. N.; Metzger, B. D.; Piro, A. L.; Quataert, E.; Kiewe, M.; Poznanski, Dovi (Macmillan Publishers Limited, 2010-05-20)
    • THE HIGH-METALLICITY EXPLOSION ENVIRONMENT OF THE RELATIVISTIC SUPERNOVA 2009BB1 

      Levesque, Emily M.; Soderberg, M.; Foley, Ryan J.; Berger, E.; Kewley, Lisa; Chakraborti, S.; Ray, Aurkie; Torres, M. A. P.; Challis, P.; Kirshner, Robert P.; Barthelmy, S. D.; Bietenholz, M. F.; Chandra, P.; Chaplin, V.; Chevalier, R. A.; Chugai, N.; Connaughton, V.; Copete, A.; Fox, O.; Fransson, C.; Grindlay, J. E.; Hamuy Wackenhut, Mario; Milne, P. A.; Pignata Libralato, Giuliano; Stritzinger, M. D.; Wieringa, M. H. (2009-12)
      We investigate the environment of the nearby (d 40 Mpc) broad-lined Type Ic supernova SN 2009bb. This event was observed to produce a relativistic outflow likely powered by a central ac- creting compact object. While ...
    • Linking type Ia supernova progenitors and their resulting explosions 

      Foley, Ryan J.; Simon, Joshua D.; Burns, Christopher R.; Gal Yam, Avishay; Hamuy Wackenhut, Mario; Kirshner, Robert P.; Morrell, Nidia I.; Phillips, Mark M.; Shields, Gregory A.; Sternberg, Assaf (2012-06-20)
      Comparing the ejecta velocities at maximum brightness and narrow circumstellar/interstellar Na D absorption line profiles of a sample of 23 Type Ia supernovae (SNe Ia), we determine that the properties of SN Ia progenitor ...
    • On the incidence of strong MgII absorbers along gamma-ray burst sight lines 

      Prochter, Gabriel E.; Prochaska, Jason X.; Chen, Hsiao-Wen; Bloom, Joshua S.; Dessauges-Zavadsky, Miroslava; Foley, Ryan J.; López Morales, Sebastián; Pettini, Max; Dupree, Andrea K.; Guhathakurta, P. (UNIV CHICAGO PRESS, 2006-09-10)
      We report on a survey for strong ( rest equivalent width W-r >= 1 angstrom) intervening Mg II systems along the sight lines to long-duration gamma-ray bursts (GRBs). The GRB spectra that comprise the survey have a heterogeneous ...
    • 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 ...
    • On the Source of the Dust Extinction in Type Ia Supernovae and the Discovery of Anomalously Strong Na I Absorption 

      Phillips, M. M.; Simon, Joshua D.; Morrell, Nidia; Burns, Christopher R.; Cox, Nick; Foley, Ryan J.; Karakas, Amanda; Patat, F.; Sternberg, A.; Williams, R.; Gal Yam, Avishay; Hsiao, Eric; Leonard, D.; Persson, Sven; Stritzinger, Maximilian; Thompson, I.; Campillay, Abdo; Contreras, Carlos; Folatelli, Gastón; Freedman, Wendy L.; Hamuy Wackenhut, Mario; Roth, Miguel; Shields, Gregory; Suntzeff, Nicholas B.; Chomiuk, Laura; Ivans, Inese; Madore, Barry; Penprase, B.; Perley, Daniel; Pignata Libralato, Giuliano; Preston, G.; Soderberg, Alicia (The American Astronomical Society, 2013-11-10)
      High-dispersion observations of the Na i D λλ5890, 5896 and K i λλ7665, 7699 interstellar lines, and the diffuse interstellar band at 5780 Å in the spectra of 32 Type Ia supernovae are used as an independent means of ...
    • An optical supernova associated with the X-ray flash XRF 060218 

      Pian, E.; Mazzali, Paolo; Masetti, N.; Ferrero, P.; Klose, Sylvio; Palazzi, E.; Ramírez Ruiz, Enrico; Woosley, S. E.; Kouveliotou, C.; Deng, J.; Filippenko, Alexei V.; Foley, Ryan J.; Fynbo, Johan P. U.; Kann, D. A.; Li, Weidong; Hjorth, Jens; Nomoto, K.; Patat, F.; Sauer, D. N.; Sollerman, J.; Vreeswijk, Paul M.; Guenther, E. W.; Levan, A. J.; O'Brien, Peter; Tanvir, N. R.; Wijers, Ralph A. M.; Dumas, C.; Hainaut, O.; Wong, D. S.; Baade, D.; Wang, L.; Amati, L.; Cappellaro, E.; Castro Tirado, A. J.; Ellison, S.; Frontera, F.; Fruchter, Andrew S.; Greiner, J.; Kawabata, K.; Ledoux, C.; Maeda, K.; Møller, P.; Nicastro, L.; Rol, E.; Starling, R. (NATURE PUBLISHING GROUP, 2006-08-31)
      Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae(1) that are more luminous than average(2-5) and that eject material at very high velocities. Less-luminous supernovae were not hitherto known to ...
    • A relativistic type Ibc supernova without a detected c-ray burst 

      Soderberg, A. M.; Chakraborti, S.; Pignata Libralato, Giuliano; Chevalier, R. A.; Chandra, P.; Ray, Aurkie; Wieringa, M. H.; Copete, A.; Chaplin, V.; Connaughton, V.; Barthelmy, S. D.; Bietenholz, M. F.; Chugai, N.; Stritzinger, M. D.; Hamuy Wackenhut, Mario; Fransson, C.; Fox, O.; Levesque, Emily M.; Grindlay, J. E.; Challis, P.; Foley, Ryan J.; Kirshner, Robert P.; Milne, P. A.; Torres, M. A. P. (Macmillan, 2010-01-28)
      Long duration c-ray bursts (GRBs) mark1 the explosive death of some massive stars and are a rare sub-class of type Ibc supernovae. They are distinguished by the production of an energetic and collimated relativistic outflow ...
    • Sn 2005bf: A possible transition event between type Ib/c supernovae and gamma-ray bursts 

      Folatelli, Gastón; Contreras, Carlos; Phillips, Mark M.; Woosley, S. E.; Blinnikov, Sergei; Morrell, Nidia; Suntzeff, Nicholas B.; Lee, Brian L.; Hamuy Wackenhut, Mario; González Tagle, Sergio; Krzeminski, Wojtek; Roth, Miguel; Li, Weidong; Filippenko, Alexei V.; Foley, Ryan J.; Freedman, Wendy L.; Madore, Barry F.; Persson, S. E.; Murphy, David; Boissier, Samuel; Galaz, Gaspar, 1967-; González, Luis; McCarthy, P. J.; McWilliam, Andrew; Pych, Wojtek (UNIV CHICAGO PRESS, 2006-04-20)
      We present u'g'r'i'BV photometry and optical spectroscopy of the Type Ib/Ic SN 2005bf covering the first similar to 100 days following discovery. The u'g'BV light curves displayed an unprecedented morphology among Type ...
    • Spectral identification of an ancient supernova using light echoes in the Large Magellanic Cloud 

      Rest, A.; Matheson, Thomas; Blondin, S.; Bergmann, M.; Welch, D. L.; Suntzeff, Nicholas B.; Smith, R. C.; Olsen, K.; Prieto, J. L.; Garg, A.; Challis, P.; Stubbs, C.; Hicken, M.; Modjaz, Maryam; Wood-Vasey, W. M.; Zenteno, A.; Damke, G.; Newman, A.; Huber, M.; Cook, K. H.; Nikolaev, S.; Becker, A. C.; Miceli, A.; Covarrubias, R.; Morelli, L.; Pignata Libralato, Giuliano; Clocchiatti, A.; Minniti, D.; Foley, Ryan J. (UNIV CHICAGO PRESS, 2008-06-20)
      We report the successful identification of the type of the supernova responsible for the supernova remnant SNR 0509-675 in the Large Magellanic Cloud (LMC) using Gemini spectra of surrounding light echoes. The ability ...
    • The peculiar SN 2005hk: Do some type ia supernovae explode as deflagrations? 

      Phillips, Mark M.; Li, Weidong; Frieman, Joshua A.; Blinnikov, Sergei; DePoy, Darren; Prietro, Jose L.; Milne, P.; Contreras, Carlos; Folatelli, Gastón; Morrell, Nidia; Hamuy Wackenhut, Mario; Suntzeff, Nicholas B.; Roth, Miguel; Krzeminski, Wojtek; Filippenko, Alexei V.; Freedman, Wendy L.; Chornock, Ryan; Jha, Saurabh; Madore, Barry F.; Persson, S. E.; González Tagle, Sergio; Burns, Christopher R.; Wyatt, Pamela; Murphy, David; Foley, Ryan J.; Ganeshalingam, Mohan; Serduke, Franklin J. D.; Krisciunas, Kevin; Bassett, Bruce; Becker, Andrew; Dilday, Ben; Eastman, J.; Garnavich, Peter M.; Holtzman, Jon; Kessler, Richard; Lampeitl, Hubert; Marriner, John; Frank, S.; Marshall, J. L.; Miknaitis, Gajus; Sako, Masao; Schneider, Donald P.; Van Der Heyden, Kurt; Yasuda, Naoki (2007)
      We present extensive u'g'r'i'BVRIYJHK(s) photometry and optical spectroscopy of the Type Ia supernova ( SN) 2005hk. These data reveal that SN 2005hk was nearly identical in its observed properties to SN 2002cx, which has ...
    • Time dilation in type Ia supernova spectra at high redshift 

      Blondin, S.; Davis, Tamara M.; Krisciunas, Kevin; Schmidt, Brian P.; Sollerman, J.; Wood-Vasey, W. M.; Becker, A. C.; Challis, P.; Clocchiatti, A.; Damke, G.; Filippenko, Alexei V.; Foley, Ryan J.; Garnavich, Peter M.; Jha, S. W.; Kirshner, Robert P.; Leibundgut, B.; Li, Weidong; Matheson, Thomas; Miknaitis, G.; Narayan, G.; Pignata Libralato, Giuliano; Rest, A.; Riess, A. G.; Silverman, J. M.; Smith, R. C.; Spyromilio, J.; Stritzinger, M.; Stubbs, C. W.; Suntzeff, Nicholas B.; Tonry, J. L.; Tucker, B. E.; Zenteno, A. (UNIV CHICAGO PRESS, 2008-08-01)
      We present multiepoch spectra of 13 high-redshift Type Ia supernovae (SNe Ia) drawn from the literature, the ESSENCE and SNLS projects, and our own separate dedicated program on the ESO Very Large Telescope. We use the ...
    • TYPE Iax SUPERNOVAE: A NEW CLASS OF STELLAR EXPLOSION 

      Foley, Ryan J.; Challis, P. J.; Chornock, R.; Ganeshalingam, M.; Li, W.; Marion, G. H.; Morrell, N. I.; Pignata Libralato, Giuliano; Stritzinger, M. D.; Silverman, J. M.; Wang, X.; Anderson, J. P.; Filippenko, A. V.; Freedman, W. L.; Hamuy Wackenhut, Mario; Jha, S. W.; Kirshner, R. P; McCully, C.; Persson, S. E.; Phillips, M. M.; Reichart, D. E.; Soderberg, A. M. (The American Astronomical Society, 2013)
      We describe observed properties of the Type Iax class of supernovae (SNe Iax), consisting of SNe observationally similar to its prototypical member, SN 2002cx. The class currently has 25 members, and we present ...