The highly energetic expansion of SN 2010bh associated with GRB 100316D

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 Larg...

Descripción completa

Guardado en:

Detalles Bibliográficos
Publicado:	2012
Materias:	supernovae: general supernovae: individual (SN 2010bh, GRB 100316D)
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v753_n1_p_Bufano http://hdl.handle.net/20.500.12110/paper_0004637X_v753_n1_p_Bufano
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_0004637X_v753_n1_p_Bufano
record_format	dspace
spelling	paper:paper_0004637X_v753_n1_p_Bufano2023-06-08T14:29:07Z The highly energetic expansion of SN 2010bh associated with GRB 100316D supernovae: general supernovae: individual (SN 2010bh, GRB 100316D) 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. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v753_n1_p_Bufano http://hdl.handle.net/20.500.12110/paper_0004637X_v753_n1_p_Bufano
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	supernovae: general supernovae: individual (SN 2010bh, GRB 100316D)
spellingShingle	supernovae: general supernovae: individual (SN 2010bh, GRB 100316D) The highly energetic expansion of SN 2010bh associated with GRB 100316D
topic_facet	supernovae: general supernovae: individual (SN 2010bh, GRB 100316D)
description	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.
title	The highly energetic expansion of SN 2010bh associated with GRB 100316D
title_short	The highly energetic expansion of SN 2010bh associated with GRB 100316D
title_full	The highly energetic expansion of SN 2010bh associated with GRB 100316D
title_fullStr	The highly energetic expansion of SN 2010bh associated with GRB 100316D
title_full_unstemmed	The highly energetic expansion of SN 2010bh associated with GRB 100316D
title_sort	highly energetic expansion of sn 2010bh associated with grb 100316d
publishDate	2012
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v753_n1_p_Bufano http://hdl.handle.net/20.500.12110/paper_0004637X_v753_n1_p_Bufano
_version_	1768544391167737856

The highly energetic expansion of SN 2010bh associated with GRB 100316D

Ejemplares similares