We present the spectroscopic and photometric evolution of the nearby (z = 0.059) spectroscopically confirmed Type Ic supernova, SN2010bh, associated with the soft, long-duration gamma-ray burst (X-ray flash) GRB100316D. Intensive follow-up observations of SN2010bh were performed at the ESO Very Large Telescope (VLT) using the X-shooter and FORS2 instruments. Thanks to the detailed temporal coverage and the extended wavelength range (3000-24800Å), we obtained an unprecedentedly rich spectral sequence among the hypernovae, making SN2010bh one of the best studied representatives of this SN class. We find that SN2010bh has a more rapid rise to maximum brightness (8.0 ± 1.0 rest-frame days) and a fainter absolute peak luminosity (L bol ≈ 3 × 10 42 erg s -1 ) than previously observed SN events associated with GRBs. Our estimate of the ejected 56 Ni mass is 0.12 ± 0.02 M o . From the broad spectral features, we measure expansion velocities up to 47,000kms -1 , higher than those of SNe 1998bw (GRB980425) and 2006aj (GRB060218). Helium absorption lines He I λ5876 and He I 1.083 μm, blueshifted by 20,000-30,000kms -1 and 28,000-38,000kms -1 , respectively, may be present in the optical spectra. However, the lack of coverage of the He I 2.058 μm line prevents us from confirming such identifications. The nebular spectrum, taken at 186days after the explosion, shows a broad but faint [O I] emission at 6340Å. The light curve shape and photospheric expansion velocities of SN2010bh suggest that we witnessed a highly energetic explosion with a small ejected mass (E k ≈ 10 52 erg and M ej ≈ 3 M o ). The observed properties of SN2010bh further extend the heterogeneity of the class of GRB SNe. © © 2012. The American Astronomical Society. All rights reserved.
Documento: | Artículo |
Título: | The highly energetic expansion of SN 2010bh associated with GRB 100316D |
Autor: | Bufano, F.; Pian, E.; Sollerman, J.; Benetti, S.; Pignata, G.; Valenti, S.; Covino, S.; D'Avanzo, P.; Malesani, D.; Cappellaro, E.; Della Valle, M.; Fynbo, J.; Hjorth, J.; Mazzali, P.A.; Reichart, D.E.; Starling, R.L.C.; Turatto, M.; Vergani, S.D.; Wiersema, K.; Amati, L.; Bersier, D.; Campana, S.; Cano, Z.; Castro-Tirado, A.J.; Chincarini, G.; D'Elia, V.; De Ugarte Postigo, A.; Deng, J.; Ferrero, P.; Filippenko, A.V.; Goldoni, P.; Gorosabel, J.; Greiner, J.; Hammer, F.; Jakobsson, P.; Kaper, L.; Kawabata, K.S.; Klose, S.; Levan, A.J.; Maeda, K.; Masetti, N.; Milvang-Jensen, B.; Mirabel, F.I.; Moller, P.; Nomoto, K.; Palazzi, E.; Piranomonte, S.; Salvaterra, R.; Stratta, G.; Tagliaferri, G.; Tanaka, M.; Tanvir, N.R.; Wijers, R.A.M.J. |
Filiación: | INAF-Osservatorio Astronomico di Catania, Via Santa Sofia, I-95123 Catania, Italy Departamento de Ciencias Fisicas, Universidad Andres Bello, Av. Republica 252, Santiago, Chile INAF-Osservatorio Astronomico di Trieste, Via G.B. Tiepolo 11, I-34143 Trieste, Italy Scuola Normale Superiore di Pisa, Piazza dei Cavalieri 7, 56126 Pisa, Italy INFN-Sezione di Pisa, Largo Pontecorvo 3, 56127 Pisa, Italy Oskar Klein Centre, Department of Astronomy, AlbaNova, SE-106 91 Stockholm, Sweden INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy INAF-Osservatorio Astronomico di Brera, Via Emilio Bianchi 46, Merate I-23807, Italy Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark INAF-Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, I-8013 Napoli, Italy International Center for Relativistic Astrophysics Network, Pescara, Italy Max-Planck Institut fur Astrophysik, Karl-Schwarzschildstr. 1, D-85748 Garching, Germany Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Campus Box 3255, Chapel Hill, NC 27599-3255, United States Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, United Kingdom INAF-Istituto di Astrofisica Spaziale E Fisica Cosmica, Via Gobetti 101, I-40129 Bologna, Italy Astrophysics Research Institute, Liverpool John Moores University, 2 Rodney Street, Liverpool L3 5UX, United Kingdom Instituto de Astrofisica de Andalucia (IAA-CSIC), Glorieta de la Astronomia s/n, Granada 18008, Spain Dip. Fisica G. Occhialini, Univerisit Milano Bicocca, P.zza della Scienza 3, Milano 20126, Italy INAF-Osservatorio Astronomico di Roma, via di Frascati 33, 00040 Monte Porzio Catone, Rome, Italy ASI-Science Data Center, Via Galileo Galilei, I-00044 Frascati, Italy National Astronomical Observatories, CAS, 20A Datun Road, Chaoyang District, Beijing 100012, China Instituto de Astrofsica de Canarias (IAC), 38200 La Laguna, Tenerife, Spain Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States Laboratoire Astroparticule et Cosmologie, 10 rue A. Domon et L. Duquet, 75205 Paris Cedex 13, France Service d'Astrophysique, DSM/IRFU/SAp, CEA-Saclay, 91191 Gif-sur-Yvette, France Max-Planck Institut für Extraterrestrische Physik, Giessenbachstrasse 1, D-85740 Garching, Germany GEPI-Observatoire de Paris Meudon, 5 Place Jules Jannsen, F-92195 Meudon, France Centre for Astrophysics and Cosmology, Science Institute, University of Iceland, Dunhagi 5, 107 Reykjavík, Iceland Astronomical Institute Anton Pannekoek, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan Thuringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom Institute for the Physics and Mathematics of the Universe, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica, Via Gobetti 101, I-40129 Bologna, Italy IAFE-CONICET-UBA. cc67, suc 28, Buenos Aires, Argentina European Organization for Astronomical Research in the Southern Hemisphere (ESO), Karl-Schwarzschild-Str. 2, 85748 Garching, Germany Dipartimento di Fisica e Matematica, Università dell'Insubria, via Valleggio 7, 22100 Como, Italy |
Palabras clave: | supernovae: general; supernovae: individual (SN 2010bh, GRB 100316D) |
Año: | 2012 |
Volumen: | 753 |
Número: | 1 |
DOI: | http://dx.doi.org/10.1088/0004-637X/753/1/67 |
Título revista: | Astrophysical Journal |
Título revista abreviado: | Astrophys. J. |
ISSN: | 0004637X |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v753_n1_p_Bufano |