Now showing items 1-18 of 18

    • A comparative study of Type II-P and II-L supernova rise times as exemplified by the case of LSQ13cuw 

      Gall, H.; Polshaw, J.; Kotak, R.; Jerkstrand, A.; Leibundgut, B.; Rabinowitz, D.; Sollerman, J.; Sullivan, M.; Smartt, S.; Anderson, J.; Benetti, S.; Baltay, C.; Feindt, U.; Fraser, M.; González Gaitán, Santiago; Inserra, C.; Maguire, K.; McKinnon, R.; Valenti, S.; Young, D. (EDP Sciences, 2015)
      We report on our findings based on the analysis of observations of the Type II-L supernova LSQ13cuw within the framework of currently accepted physical predictions of core-collapse supernova explosions. LSQ13cuw was ...
    • DES14X3taz: A type i superluminous supernova showing a luminous, rapidlycooling initial pre-peak bump 

      Smith, M.; Sullivan, M.; D'Andrea, C. B.; Castander, F. J.; Casas, R.; Prajs, S.; Papadopoulos, A.; Nichol, R. C.; Karpenka, N. V.; Bernard, S. R.; Brown, P.; Cartier Ugarte, Regis; Cooke, J.; Curtin, C.; Davis, T. M.; Finley, D. A.; Foley, R. J.; Gal Yam, Avishay; Goldstein, D. A.; González Gaitán, Santiago; Gupta, R. R.; Howell, D. A.; Inserra, C.; Kessler, R.; Lidman, C.; Marriner, J.; Nugent, P.; Pritchard, T. A.; Sako, M.; Smartt, S.; Smith, R. C.; Spinka, H.; Thomas, R. C.; Wolf, R. C.; Zenteno, A.; Abbott, T. M.; Benoit Levy, A.; Bertin, E.; Brooks, D.; Buckley Geer, E.; Carnero Rosell, A.; Kind, Carrasco; Carretero, J.; Crocce, M.; Cunha, C. E.; da Costa, L. N.; Desai, S.; Fosalba, P.; Frieman, J.; Gerdes, D. W.; Gruen, D.; Gruendl, R. A.; Marshall, J. L.; Martini, P.; Miller, C. J.; Miquel, R.; Nord, B. B.; Ogando, R.; Plazas, A. A.; Reil, K.; Romer, A. K.; Roodman, A.; Rykoff, E. S.; Sánchez, E.; Scarpine, V.; Schubnell, M.; Sevilla Noarbe, I.; Soares Santos, M.; Sobreira, F.; Suchyta, E.; Swanson, M. E. C.; Tarle, G.; Walker, A. R.; Wester, W. (IOP PUBLISHING LTD, 2016)
      We present DES14X3taz, a new hydrogen-poor superluminous supernova (SLSN-I) discovered by the Dark Energy Survey (DES) supernova program, with additional photometric data provided by the Survey Using DECam for Superluminous ...
    • Erratum: On the diversity of superluminous supernovae: ejected mass as the dominant factor 

      Nicholl, M.; Smartt, S. J.; Jerkstrand, A.; Inserra, C.; Sim, S. A.; Chen, T. W.; Benetti, S.; Fraser, M.; Gal Yam, Avishay; Kankare, E.; Maguire, K.; Smith, K.; Sullivan, M.; Valenti, S.; Young, D. R.; Baltay, C.; Bauer, F. E.; Baumont, S.; Bersier, D.; Botticella, M.-T.; Childress, M.; Dennefeld, M.; Valle, M. Della; Elías-Rosa, N.; Feindt, U.; Galbany, Lluis; Hadjiyska, E.; Le Guillou, L.; Leloudas, G.; Mazzali, P.; McKinnon, R.; Polshaw, J.; Rabinowitz, D.; Rostami, S.; Scalzo, R.; Schmidt, B. P.; Schulze, Steve; Sollerman, J.; Taddia, F.; Yuan, F. (Royal Astronomical Society, 2016)
      This is an erratum to the paper ‘On the diversity of superluminous supernovae: ejected mass as the dominant factor’, published in MNRAS, 2015, 452.
    • 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) = ...
    • INTERACTING SUPERNOVAE AND SUPERNOVA IMPOSTORS: SN 2009ip, IS THIS THE END? 

      Pastorello, A.; Cappellaro, E.; Inserra, C.; Smartt, S. J.; Pignata Libralato, Giuliano; Benetti, S.; Valenti, S.; Fraser, M.; Takáts, K.; Benítez Seguel, Susana Alejandra; Botticella, María Teresa; Brimacombe, J.; Bufano, Filomena; Cellier Holzem, F.; Costado, M. T.; Cupani, G.; Curtis, I.; Elias Rosa, N.; Ergon, M.; Fynbo, J. P.; Hambsch, F. J.; Hamuy Wackenhut, Mario; Harutyunyan, A.; Ivarson, K. M.; Kankare, E.; Martin, J. C.; Kotak, R.; LaCluyze, Aaron P.; Maguire, K.; Mattila, S.; Maza Sancho, José; McCrum, M.; Miluzio, M.; Norgaard Nielsen, H. U.; Nysewander, M. C.; Ochner, P.; Pan, Y. C.; Pumo, M. L.; Reichart, D. E.; Tan, T. G.; Taubenberger, S.; Tomasella, L.; Turatto, M.; Wright, D. (The American Astronomical Society, 2013-04)
      We report the results of a three-year-long dedicated monitoring campaign of a restless luminous blue variable (LBV) in NGC 7259. The object, named SN 2009ip, was observed photometrically and spectroscopically in the optical ...
    • LSQ13fn: A type II-Plateau supernova with a possibly low metallicity progenitor that breaks the standardised candle relation 

      Polshaw, J.; Kotak, R.; Dessart, L.; Fraser, M.; Gal Yam, Avishay; 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, Lluis; McKinnon, R.; Nicholl, M.; Smith, K. W.; Sullivan, M.; Takáts, K.; Valenti, S.; Young, D. R. (ESO, 2016)
      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 ...
    • LSQ14bdq: A Type Ic super-luminous supernova with a double-peaked light curve 

      Nicholl, M.; Smartt, S. J.; Jerkstrand, A.; Sim, S. A.; Inserra, C.; Anderson, J. P.; Baltay, C.; Benetti, S.; Chambers, K.; Chen, T. W.; Elias Rosa, N.; Feindt, U.; Flewelling, H. A.; Fraser, M.; Gal Yam, Avishay; Galbany, Lluis; Huber, M. E.; Kangas, T.; Kankare, E.; Kotak, R.; Kruehler, T.; Maguire, K.; McKinnon, R.; Rabinowitz, D.; Rostami, S.; Schulze, Steve; Smith, K.W.; Sullivan, M.; Tonry, J. L.; Valenti, S.; Young, D. R. (IOP Publishing, 2015)
      We present data for LSQ14bdq, a hydrogen-poor super-luminous supernova (SLSN) discovered by the La Silla QUEST survey and classified by the Public ESO Spectroscopic Survey of Transient Objects. The spectrum and light curve ...
    • On the diversity of superluminous supernovae: ejected mass as the dominant factor 

      Nicholl, M.; Smartt, S. J.; Jerkstrand, A.; Inserra, C.; Sim, S. A.; Chen, T. W.; Benetti, S.; Fraser, M.; Gal Yam, Avishay; Kankare, E.; Maguire, K.; Smith, K.; Sullivan, M.; Valenti, S.; Young, D. R.; Baltay, C.; Bauer, F. E.; Baumont, S.; Bersier, D.; Botticella, M. T.; Childress, M.; Dennefeld, M.; Della Valle, Massimo; Elias Rosa, N.; Feindt, U.; Galbany, Lluis; Hadjiyska, E.; Le Guillou, L.; Leloudas, G.; Mazzali, P.; McKinnon, R.; Polshaw, J.; Rabinowitz, D.; Rostami, S.; Scalzo, R.; Schmidt, B. P.; Schulze, S.; Sollerman, J.; Taddia, F.; Yuan, F. (Oxford University Press, 2015)
      We assemble a sample of 24 hydrogen-poor superluminous supernovae (SLSNe). Parameterizing the light-curve shape through rise and decline time-scales shows that the two are highly correlated. Magnetar-powered models can ...
    • PESSTO: survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects 

      Smartt, S. J.; Valenti, S.; Fraser, M.; Inserra, C.; Young, D. R.; Sullivan, M.; Pastorello, A.; Benetti, S.; Gal-Yam, A.; Knapic, C.; Molinaro, M.; Smareglia, R.; Smith, K.W.; Taubenberger, S.; Yaron, O.; Anderson, J. P.; Ashall, C.; Balland, C.; Baltay, C.; Barbarino, C.; Bauer, Franz Erik; Baumont, S.; Bersier, D.; Blagorodnova, N.; Bongard, S.; Botticella, M.-T.; Bufano, F.; Bulla, M.; Cappellaro, E.; Campbell, H.; Cellier Holzem, F.; Chen, T. W.; Childress, M. J.; Clocchiatti, A.; Contreras, C.; Dall’Ora, M.; Danziger, J.; De Jaeger, Thomas; De Cia, A.; Della Valle, M.; Dennefeld, M.; Elias Rosa, N.; Elman, N.; Feindt, U.; Fleury, M.; Gall, E.; González Gaitán, Santiago; Galbany, Lluis; Morales Garoffolo, A.; Greggio, L.; Guillou, L. L.; Hachinger, S.; Hadjiyska, E.; Hage, P. E.; Hillebrandt, W.; Hodgkin, S.; Hsiao, E. Y.; James, P. A.; Jerkstrand, A.; Kangas, T.; Kankare, E.; Kotak, R.; Kromer, M.; Kuncarayakti, H.; Leloudas, G.; Lundqvist, P.; Lyman, J. D.; Hook, I. M.; Maguire, K.; Manulis, I.; Margheim, S.; Mattila, S.; Maund, J. R.; Mazzali, P.; McCrum, M.; McKinnon, R.; Moreno Raya, M. E.; Nicholl, M.; Nugent, P. E.; Pain, R.; Pignata Libralato, Giuliano; Phillips, M. M.; Polshaw, J.; Pumo, M. L.; Rabinowitz, D.; Reilly, E.; Romero Cañizales, C.; Scalzo, R.; Schmidt, B.; Schulze, Steve; Sim, S. A.; Sollerman, J.; Taddia, F.; Tartaglia, L.; Terreran, G.; Tomasella, L.; Turatto, M.; Walker, E.; Walton, N. A.; Wyrzykowski, L.; Yuan, F.; Zampieri, L. (EDP Sciences, 2015)
      Context. The Public European Southern Observatory Spectroscopic Survey of Transient Objects (PESSTO) began as a public spectroscopic survey in April 2012. PESSTO classifies transients from publicly available sources and ...
    • SN 2009ib: a Type II-P supernova with an unusually long plateau 

      Takáts, K.; Pignata Libralato, Giuliano; Pumo, M. L.; Paillas, E.; Zampieri, L.; Elias-Rosa, N.; Benetti, S.; Bufano, Filomena; Cappellaro, E.; Ergon, M.; Fraser, M.; Hamuy Wackenhut, Mario; Inserra, C.; Kankare, E.; Smartt, S. J.; Stritzinger, M. D.; Van Dyk, S. D.; Haislip, Joshua B.; LaCluyze, A. P.; Moore, J. P.; Reichart, D. (Royal Astronomical Society, 2015)
      We present optical and near-infrared photometry and spectroscopy of SN 2009ib, a Type II-P supernova in NGC 1559. This object has moderate brightness, similar to those of the intermediate-luminosity SNe 2008in and 2009N. ...
    • SN 2009jf: a slow-evolving stripped-envelope core-collapse supernova 

      Valenti, S.; Fraser, M.; Benetti, S.; Pignata Libralato, Giuliano; 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, Joshua B.; Hamuy Wackenhut, Mario; Harutyunyan, A.; Ivarsen, K. M.; Kankare, E.; Kotak, R.; LaCluyze, Aaron P.; Magill, L.; Mattila, S.; Maza Sancho, José; Mazzali, Paolo; Reichart, D. E.; Taubenberger, S.; Turatto, M.; Zampieri, L. (2011)
      We present an extensive set of photometric and spectroscopic data for SN 2009jf, a nearby Type Ib supernova (SN), spanning from∼20 d before B-band maximum to 1 yr after maximum. We show that SN 2009jf is a slowly 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 ...
    • SN 2012ec: mass of the progenitor from PESSTO follow-up of the photospheric phase 

      Barbarino, C.; Dall'Ora, M.; Botticella, M. T.; Della Valle, Massimo; Zampieri, L.; Maund, J.; Pumo, M.; Jerkstrand, A.; Benetti, S.; Elias Rosa, N.; Fraser, M.; Gal Yam, Avishay; Hamuy Wackenhut, Mario; Inserra, C.; Knapic, C.; LaCluyze, A.; Molinaro, M.; Ochner, P.; Pastorello, A.; Pignata Libralato, Giuliano; Reichart, D.; Ries, C.; Riffeser, A.; Schmidt, B.; Schmidt, M.; Smareglia, R.; Smartt, S.; Smith, K.; Sollerman, J.; Sullivan, M.; Tomasella, L.; Turatto, M.; Valenti, S.; Yaron, O.; Young, D. (Oxford Univ Press, 2015)
      We present the results of a photometric and spectroscopic monitoring campaign of SN 2012ec, which exploded in the spiral galaxy NGC 1084, during the photospheric phase. The photometric light curve exhibits a plateau with ...
    • SN 2015bn: a detailed multi-wavelength view of a nearbysuperluminous supernova 

      Nicholl, M.; Berger, E.; Smartt, S. J.; Margutti, R.; Kamble, A.; Alexander, K. D.; Chen, T. W.; Inserra, C.; Arcavi, I.; Blanchard, P. K.; Cartier Ugarte, Regis; Chambers, K. C.; Childress, M. J.; Chornock, R.; Cowperthwaite, P. S.; Drout, M.; Flewelling, H. A.; Fraser, M.; Gal Yam, Avishay; Galbany, Lluis; Harmanen, J.; Holohien, T- W. -S; Hosseinzadeh, G.; Howell, D. A.; Huber, M. E.; Jerkstrand, A.; Kankare, E.; Kochanek, C. S. C. S.; Lin, Z. -Y.; Lunnan, R.; Magnier, E. A.; Maguire, K.; McCully, C.; McDonald, M.; Metzger, B. D.; Milisavljevic, D.; Mitra, A.; Reynolds, T.; Saario, J.; Shappee, B. J.; Smith, K. W.; Valenti, S.; Villar, V. A.; Waters, C.; Young, D. R. (IOP Publishing, 2016)
      We present observations of SN 2015bn (=PS15ae = CSS141223-113342+004332 = MLS150211-113342+004333), a Type I superluminous supernova (SLSN) at redshift z = 0.1136. As well as being one of the closest SLSNe I yet discovered, ...
    • A statistical analysis of circumstellar material in Type Ia supernovae 

      Maguire, K.; Sullivan, M.; Patat, F.; Gal-Yam, A.; Hook, I. M.; Dhawan, S.; Howell, D. A.; Mazzali, P.; Nugent, P. E.; Pan, Y. C.; Podsiadlowski, P.; Simon, J. D.; Sternberg, A.; Valenti, S.; Baltay, C.; Bersier, D.; Blagorodnova, N.; Chen, T. W.; Ellman, N.; Feindt, U.; Förster, Francisco; Fraser, M.; González Gaitán, Santiago; Graham, M. L.; Gutiérrez, C.; Hachinger, S.; Hadjiyska, E.; Inserra, C.; Knapic, C.; Laher, R. R.; Leloudas, G.; Margheim, S.; McKinnon, R.; Molinaro, M.; Morrell, N.; Ofek, E. O.; Rabinowitz, D.; Rest, A.; Sand, D.; Smareglia, R.; Smartt, S. J.; Taddia, F.; Walker, E. S.; Walton, N. A.; Young, D. R. (Oxford University Press, Royal Astronomical Society, 2013)
      A key tracer of the elusive progenitor systems of Type Ia supernovae (SNe Ia) is the detection of narrow blueshifted time-varying Na I D absorption lines, interpreted as evidence of circumstellar material surrounding the ...
    • Supernova 2013fc in a circumnuclear ring of a luminous infrared galaxy: the big brother of SN 1998S 

      Kangas, T.; Mattila, S.; Kankare, E.; Lundqvist, P.; Vaeisaenen, P.; Childress, M.; Pignata Libralato, Giuliano; McCully, C.; Valenti, S.; Vinkó, J.; Pastorello, A.; Elias Rosa, N.; Fraser, M.; Gal Yam, Avishay; Kotak, R.; Kotilainen, J. K.; Smartt, S. J.; Galbany, Lluis; Harmanen, J.; Howell, D. A.; Inserra, C.; Marion, G. H.; Quimby, R. M.; Silverman, J. M.; Szalai, T.; Wheeler, J. C.; Ashall, C.; Benetti, S.; Romero Cañizales, C.; Smith, K. W.; Sullivan, M.; Takáts, K.; Young, D. R. (Oxford University Press, 2016)
      We present photometric and spectroscopic observations of SN 2013fc, a bright type II supernova (SN) in a circumnuclear star-forming ring in the luminous infrared galaxy ESO 154-G010, observed as part of the Public ESO ...
    • The lowest-metallicity type II supernova from the highest-mass red supergiant progenitor 

      Anderson, P.; Dessart, L.; Gutierrez, C.; Kruhler, T.; Galbany, Lluis; Jerkstrand, A.; Smartt, S.; Contreras, C.; Morrell, N.; Phillips, M.; Stritzinger, M.; Hsiao, E.; González Gaitán, Santiago; Agliozzo, C.; Castellon, Sergio; Chambers, K.; Chen, T.; Flewelling, H.; González, C.; Hosseinzadeh, G.; Huber, M.; Fraser, M.; Inserra, C.; Kankare, E.; Mattila, S.; Magnier, E.; Maguire, K.; Lowe, T.; Sollerman, J.; Sullivan, M.; Young, D.; Valenti, S. (Nature Publishing Group, 2018-07)
      Red supergiants have been confirmed as the progenitor stars of the majority of hydrogen-rich type II supernovae(1). However, while such stars are observed with masses > 25 M-circle dot (ref. (2)), detections of > 18 M-circle ...
    • The type Iax supernova, SN 2015H A white dwarf deflagration candidate 

      Magee, M. R.; Kotak, R.; Sim, S. A.; Kromer, M.; Rabinowitz, D.; Smartt, S. J.; Baltay, C.; Campbell, H. C.; Chen, T. W.; Fink, M.; Gal Yam, Avishay; Galbany, Lluis; Hillebrandt, W.; Inserra, C.; Kankare, E.; Le Guillou, L.; Lyman, J. D.; Maguire, K.; Pakmor, R.; Ropke, F. K.; Ruiter, A. J.; Seitenzahl, I. R.; Sullivan, M.; Valenti, S.; Young, D. R. (EDP Sciences, 2016)
      We present results based on observations of SN 2015H which belongs to the small group of objects similar to SN 2002cx, otherwise known as type Iax supernovae. The availability of deep pre-explosion imaging allowed us to ...