Now showing items 1-11 of 11

    • Characteristic velocities of stripped-envelope core-collapse supernova cores 

      Maurer, J. I.; Mazzali, Paolo; Deng, J.; Filippenko, Alexei V.; Hamuy Wackenhut, Mario; Kirshner, Robert P.; Matheson, Thomas; Modjaz, Maryam; Pian, E.; Stritzinger, M.; Taubenberger, S.; Valenti, S. (2010)
      The velocity of the inner ejecta of stripped-envelope core-collapse supernovae (CC-SNe) is studied by means of an analysis of their nebular spectra. Stripped-envelope CC-SNe are the result of the explosion of bare cores ...
    • 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 ...
    • THE DISTANCES TO 5 TYPE-II SUPERNOVAE USING THE EXPANDING PHOTOSPHERE METHOD, AND THE VALUE OF HO 

      Schmidt, Brian P.; Kirshner, Robert P.; Eastman, Ronald G.; Phillips, Mark M.; Suntzeff, Nicholas B.; Hamuy Wackenhut, Mario; Maza Sancho, José; Avilés, Roberto (UNIV CHICAGO PRESS, 1994-09-01)
      We have used observations gathered at CTIO to measure distances by the expanding photosphere method (EPM) to five Type II supernovae. These supernovae lie at redshifts from cz = 1100 km s-1 to cz - 5500 km s-1, and increase ...
    • THE EXPANDING PHOTOSPHERE METHOD APPLIED TO SN-1992AM AT CZ=14600KM-S 

      Schmidt, Brian P.; Kirshner, Robert P.; Eastman, Ronald G.; Hamuy Wackenhut, Mario; Phillips, Mark M.; Suntzeff, Nicholas B.; Maza Sancho, José; Filippenko, Alexei V.; Ho, Luis C.; Matheson, Thomas; Grashuis, Randy; Aviles, Roberto; Kirkpatrick, J. Davy; Challis, Peter; Kuijken, Konrad; Zucker, Daniel; Bolte, Michael; Tyson, Neil D. (AMER INST PHYSICS, 1994-04)
      We present photometry and spectroscopy of SN 1992am for five months following its discovery by the Calan/CTIO SN search. These data show SN 1992am to be type II-P, displaying hydrogen in its spectrum and the typical shoulder ...
    • 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 ...
    • 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 ...
    • 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 1991bg - A type IA supernova with a difference 

      Leibundgut, Bruno; Kirshner, Robert P.; Phillips, Mark M.; Wells, Lisa A.; Suntzeff, Nicholas B.; Hamuy Wackenhut, Mario; Schommer, R. A.; Walker, A. R.; Gonzalez, L.; Ugarte, P.; Williams, R. E.; Williger, G.; Gómez, Mercedes; Marzke, Ronald; Schmidt, Brian P.; Whitney, Barbara; Coldwell, Nelson; Peters, J.; Chaffee, F. H.; Foltz, Craig B.; Rehner, D.; Siciliano, L.; Barnes, T. G.; Cheng, K. P.; Hintzen, P. M. N.; Kim, Y. C.; Maza Sancho, José; Parker, J. Wm.; Porter, A. C.; Schmidtke, P. C.; Sonneborn, George (American Astronomical Society, 1993-01)
      We present 13 spectra and 31 photometric observations covering the first 150 days of SN 1991bg in NGC 4374 (M 84). Although SN 1991bg was a type Ia supernova displaying the characteristic Si II absorption at 6150 angstrom ...
    • The Standardized Candle Method for Type II Plateau Supernovae 

      Olivares E., Felipe; Hamuy Wackenhut, Mario; Pignata Libralato, Giuliano; Maza Sancho, José; Bersten, Melina; Phillips, Mark M.; Suntzeff, Nicholas B.; Filippenko, Alexei V.; Morrel, Nidia I.; Kirshner, Robert P.; Matheson, Thomas (2010-04-15)
      In this paper we study the “standardized candle method” using a sample of 37 nearby (redshift z < 0.06) Type II plateau supernovae having BV RI photometry and optical spectroscopy. An analytic procedure is implemented ...
    • 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 ...