A spectroscopically normal type Ic supernova from a very massive progenitor

Stefano Valenti; Stefan Taubenberger; Andrea Pastorello; Levon Aramyan; Maria Teresa Botticella; Morgan Fraser; Stefano Benetti; Stephen J. Smartt; Enrico Cappellaro; Nancy Elias-Rosa; Mattias Ergon; Lindsay Magill; Eugene Magnier; Rubina Kotak; Paul A. Price; Jesper Sollerman; Lina Tomasella; Massimo Turatto; Darryl E. Wright; INAF-Osservatorio Astronomico di Padova

doi:10.1088/2041-8205/749/2/L28

A spectroscopically normal type Ic supernova from a very massive progenitor

Stefano Valenti, Stefan Taubenberger, Andrea Pastorello, Levon Aramyan, Maria Teresa Botticella, Morgan Fraser, Stefano Benetti, Stephen J. Smartt, Enrico Cappellaro, Nancy Elias-Rosa, Mattias Ergon, Lindsay Magill, Eugene Magnier, Rubina Kotak, Paul A. Price, Jesper Sollerman, Lina Tomasella, Massimo Turatto, Darryl E. Wright, INAF-Osservatorio Astronomico di Padova

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Abstract

We present observations of the Type Ic supernova (SN Ic) 2011bm spanning a period of about one year. The data establish that SN 2011bm is a spectroscopically normal SN Ic with moderately low ejecta velocities and with a very slow spectroscopic and photometric evolution (more than twice as slow as SN 1998bw). The Pan-STARRS1 retrospective detection shows that the rise time from explosion to peak was 40 days in the R band. Through an analysis of the light curve and the spectral sequence, we estimate a kinetic energy of 7-17 foe and a total ejected mass of 7-17 Mo, 5-10 Mo of which is oxygen and 0.6-0.7 Mo is 56Ni. The physical parameters obtained for SN 2011bm suggest that its progenitor was a massive star of initial mass 30-50 Mo. The profile of the forbidden oxygen lines in the nebular spectra show no evidence of a bi-polar geometry in the ejected material.

Original language	English
Article number	L28
Number of pages	7
Journal	Astrophysical Journal Letters
Volume	749
Issue number	2
Early online date	30 Mar 2012
DOIs	https://doi.org/10.1088/2041-8205/749/2/L28
Publication status	Published - 20 Apr 2012

Bibliographical note

3 Figures - 2 Tables - Accepted for publication in ApJL

Keywords

astro-ph.SR
astro-ph.CO

ASJC Scopus subject areas

Space and Planetary Science
Astronomy and Astrophysics

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10.1088/2041-8205/749/2/L28Licence: Unspecified

A spectroscopically normal type Ic supernova from a very massive progenitor
© 2012. The American Astronomical Society. All rights reserved. This is an author-created, un-copyedited version of an article accepted for publication in Astrophysical Journal Letters. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://iopscience.iop.org/article/10.1088/2041-8205/749/2/L28/meta.
Accepted author manuscript, 480 KBLicence: Unspecified

Cite this

Valenti, S., Taubenberger, S., Pastorello, A., Aramyan, L., Teresa Botticella, M., Fraser, M., Benetti, S., J. Smartt, S., Cappellaro, E., Elias-Rosa, N., Ergon, M., Magill, L., Magnier, E., Kotak, R., A. Price, P., Sollerman, J., Tomasella, L., Turatto, M., Wright, D. E., & Astronomico di Padova, INAF-O. (2012). A spectroscopically normal type Ic supernova from a very massive progenitor. Astrophysical Journal Letters, 749(2), [L28]. https://doi.org/10.1088/2041-8205/749/2/L28

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title = "A spectroscopically normal type Ic supernova from a very massive progenitor",

abstract = "We present observations of the Type Ic supernova (SN Ic) 2011bm spanning a period of about one year. The data establish that SN 2011bm is a spectroscopically normal SN Ic with moderately low ejecta velocities and with a very slow spectroscopic and photometric evolution (more than twice as slow as SN 1998bw). The Pan-STARRS1 retrospective detection shows that the rise time from explosion to peak was 40 days in the R band. Through an analysis of the light curve and the spectral sequence, we estimate a kinetic energy of 7-17 foe and a total ejected mass of 7-17 Mo, 5-10 Mo of which is oxygen and 0.6-0.7 Mo is 56Ni. The physical parameters obtained for SN 2011bm suggest that its progenitor was a massive star of initial mass 30-50 Mo. The profile of the forbidden oxygen lines in the nebular spectra show no evidence of a bi-polar geometry in the ejected material.",

keywords = "astro-ph.SR, astro-ph.CO",

author = "Stefano Valenti and Stefan Taubenberger and Andrea Pastorello and Levon Aramyan and {Teresa Botticella}, Maria and Morgan Fraser and Stefano Benetti and {J. Smartt}, Stephen and Enrico Cappellaro and Nancy Elias-Rosa and Mattias Ergon and Lindsay Magill and Eugene Magnier and Rubina Kotak and {A. Price}, Paul and Jesper Sollerman and Lina Tomasella and Massimo Turatto and Wright, {Darryl E.} and {Astronomico di Padova}, INAF-Osservatorio",

note = "3 Figures - 2 Tables - Accepted for publication in ApJL",

year = "2012",

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doi = "10.1088/2041-8205/749/2/L28",

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Valenti, S, Taubenberger, S, Pastorello, A, Aramyan, L, Teresa Botticella, M, Fraser, M, Benetti, S, J. Smartt, S, Cappellaro, E, Elias-Rosa, N, Ergon, M, Magill, L, Magnier, E, Kotak, R, A. Price, P, Sollerman, J, Tomasella, L, Turatto, M, Wright, DE & Astronomico di Padova, INAF-O 2012, 'A spectroscopically normal type Ic supernova from a very massive progenitor', Astrophysical Journal Letters, vol. 749, no. 2, L28. https://doi.org/10.1088/2041-8205/749/2/L28

TY - JOUR

T1 - A spectroscopically normal type Ic supernova from a very massive progenitor

AU - Valenti, Stefano

AU - Taubenberger, Stefan

AU - Pastorello, Andrea

AU - Aramyan, Levon

AU - Teresa Botticella, Maria

AU - Fraser, Morgan

AU - Benetti, Stefano

AU - J. Smartt, Stephen

AU - Cappellaro, Enrico

AU - Elias-Rosa, Nancy

AU - Ergon, Mattias

AU - Magill, Lindsay

AU - Magnier, Eugene

AU - Kotak, Rubina

AU - A. Price, Paul

AU - Sollerman, Jesper

AU - Tomasella, Lina

AU - Turatto, Massimo

AU - Wright, Darryl E.

AU - Astronomico di Padova, INAF-Osservatorio

N1 - 3 Figures - 2 Tables - Accepted for publication in ApJL

PY - 2012/4/20

Y1 - 2012/4/20

N2 - We present observations of the Type Ic supernova (SN Ic) 2011bm spanning a period of about one year. The data establish that SN 2011bm is a spectroscopically normal SN Ic with moderately low ejecta velocities and with a very slow spectroscopic and photometric evolution (more than twice as slow as SN 1998bw). The Pan-STARRS1 retrospective detection shows that the rise time from explosion to peak was 40 days in the R band. Through an analysis of the light curve and the spectral sequence, we estimate a kinetic energy of 7-17 foe and a total ejected mass of 7-17 Mo, 5-10 Mo of which is oxygen and 0.6-0.7 Mo is 56Ni. The physical parameters obtained for SN 2011bm suggest that its progenitor was a massive star of initial mass 30-50 Mo. The profile of the forbidden oxygen lines in the nebular spectra show no evidence of a bi-polar geometry in the ejected material.

AB - We present observations of the Type Ic supernova (SN Ic) 2011bm spanning a period of about one year. The data establish that SN 2011bm is a spectroscopically normal SN Ic with moderately low ejecta velocities and with a very slow spectroscopic and photometric evolution (more than twice as slow as SN 1998bw). The Pan-STARRS1 retrospective detection shows that the rise time from explosion to peak was 40 days in the R band. Through an analysis of the light curve and the spectral sequence, we estimate a kinetic energy of 7-17 foe and a total ejected mass of 7-17 Mo, 5-10 Mo of which is oxygen and 0.6-0.7 Mo is 56Ni. The physical parameters obtained for SN 2011bm suggest that its progenitor was a massive star of initial mass 30-50 Mo. The profile of the forbidden oxygen lines in the nebular spectra show no evidence of a bi-polar geometry in the ejected material.

KW - astro-ph.SR

KW - astro-ph.CO

U2 - 10.1088/2041-8205/749/2/L28

DO - 10.1088/2041-8205/749/2/L28

M3 - Article

VL - 749

JO - The Astrophysical Journal Letters

JF - The Astrophysical Journal Letters

SN - 2041-8213

IS - 2

M1 - L28

ER -

A spectroscopically normal type Ic supernova from a very massive progenitor

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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