Supernova 2003bg: The first type IIb hypernova

Mario Hamuy; Jinsong Deng; Paolo A. Mazzali; Nidia I. Morrell; Mark M. Phillips; Miguel Roth; Sergio Gonzalez; Joanna Thomas-Osip; Wojtek Krzeminski; Carlos Contreras; José Maza; Luis Gonzlez; Leonor Huerta; Gastón Folatelli; Ryan Chornock; Alexei V. Filippenko; S. E. Persson; W. L. Freedman; Kathleen Koviak; Nicholas B. Suntzeff; Kevin Krisciunas

doi:10.1088/0004-637X/703/2/1612

Supernova 2003bg: The first type IIb hypernova

Mario Hamuy^*, Jinsong Deng, Paolo A. Mazzali, Nidia I. Morrell, Mark M. Phillips, Miguel Roth, Sergio Gonzalez, Joanna Thomas-Osip, Wojtek Krzeminski, Carlos Contreras, José Maza, Luis Gonzlez, Leonor Huerta, Gastón Folatelli, Ryan Chornock, Alexei V. Filippenko, S. E. Persson, W. L. Freedman, Kathleen Koviak, Nicholas B. SuntzeffKevin Krisciunas

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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Abstract

Optical and near-infrared photometry and optical spectroscopy are reported for SN 2003bg, starting a few days after explosion and extending for a period of more than 300 days. Our early-time spectra reveal the presence of broad, high-velocity Balmer lines. The nebular-phase spectra, on the other hand, show a remarkable resemblance to those of Type Ib/c supernovae, without clear evidence for hydrogen. Near maximum brightness SN 2003bg displayed a bolometric luminosity comparable to that of other Type I hypernovae unrelated to gamma-ray bursts, implying a rather normal amount of ⁵⁶Ni production (0.1-0.2 M) compared with other such objects. The bolometric light curve of SN 2003bg, on the other hand, is remarkably broad, thus suggesting a relatively large progenitor mass at the moment of explosion. These observations, together with the large value of the kinetic energy of expansion established in the accompanying paper, suggest that SN 2003bg can be regarded as a Type IIb hypernova.

Original language	English (US)
Pages (from-to)	1612-1623
Number of pages	12
Journal	Astrophysical Journal
Volume	703
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/703/2/1612
State	Published - 2009

Keywords

Supernovae: general

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-637X/703/2/1612

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Hamuy, M., Deng, J., Mazzali, P. A., Morrell, N. I., Phillips, M. M., Roth, M., Gonzalez, S., Thomas-Osip, J., Krzeminski, W., Contreras, C., Maza, J., Gonzlez, L., Huerta, L., Folatelli, G., Chornock, R., Filippenko, A. V., Persson, S. E., Freedman, W. L., Koviak, K., ... Krisciunas, K. (2009). Supernova 2003bg: The first type IIb hypernova. Astrophysical Journal, 703(2), 1612-1623. https://doi.org/10.1088/0004-637X/703/2/1612

@article{a4a5493a340b49cca0941456fe6b5494,

title = "Supernova 2003bg: The first type IIb hypernova",

abstract = "Optical and near-infrared photometry and optical spectroscopy are reported for SN 2003bg, starting a few days after explosion and extending for a period of more than 300 days. Our early-time spectra reveal the presence of broad, high-velocity Balmer lines. The nebular-phase spectra, on the other hand, show a remarkable resemblance to those of Type Ib/c supernovae, without clear evidence for hydrogen. Near maximum brightness SN 2003bg displayed a bolometric luminosity comparable to that of other Type I hypernovae unrelated to gamma-ray bursts, implying a rather normal amount of 56Ni production (0.1-0.2 M) compared with other such objects. The bolometric light curve of SN 2003bg, on the other hand, is remarkably broad, thus suggesting a relatively large progenitor mass at the moment of explosion. These observations, together with the large value of the kinetic energy of expansion established in the accompanying paper, suggest that SN 2003bg can be regarded as a Type IIb hypernova.",

keywords = "Supernovae: general",

author = "Mario Hamuy and Jinsong Deng and Mazzali, {Paolo A.} and Morrell, {Nidia I.} and Phillips, {Mark M.} and Miguel Roth and Sergio Gonzalez and Joanna Thomas-Osip and Wojtek Krzeminski and Carlos Contreras and Jos{\'e} Maza and Luis Gonzlez and Leonor Huerta and Gast{\'o}n Folatelli and Ryan Chornock and Filippenko, {Alexei V.} and Persson, {S. E.} and Freedman, {W. L.} and Kathleen Koviak and Suntzeff, {Nicholas B.} and Kevin Krisciunas",

year = "2009",

doi = "10.1088/0004-637X/703/2/1612",

language = "English (US)",

volume = "703",

pages = "1612--1623",

journal = "Astrophysical Journal",

issn = "0004-637X",

number = "2",

}

Hamuy, M, Deng, J, Mazzali, PA, Morrell, NI, Phillips, MM, Roth, M, Gonzalez, S, Thomas-Osip, J, Krzeminski, W, Contreras, C, Maza, J, Gonzlez, L, Huerta, L, Folatelli, G, Chornock, R, Filippenko, AV, Persson, SE, Freedman, WL, Koviak, K, Suntzeff, NB & Krisciunas, K 2009, 'Supernova 2003bg: The first type IIb hypernova', Astrophysical Journal, vol. 703, no. 2, pp. 1612-1623. https://doi.org/10.1088/0004-637X/703/2/1612

TY - JOUR

T1 - Supernova 2003bg

T2 - The first type IIb hypernova

AU - Hamuy, Mario

AU - Deng, Jinsong

AU - Mazzali, Paolo A.

AU - Morrell, Nidia I.

AU - Phillips, Mark M.

AU - Roth, Miguel

AU - Gonzalez, Sergio

AU - Thomas-Osip, Joanna

AU - Krzeminski, Wojtek

AU - Contreras, Carlos

AU - Maza, José

AU - Gonzlez, Luis

AU - Huerta, Leonor

AU - Folatelli, Gastón

AU - Chornock, Ryan

AU - Filippenko, Alexei V.

AU - Persson, S. E.

AU - Freedman, W. L.

AU - Koviak, Kathleen

AU - Suntzeff, Nicholas B.

AU - Krisciunas, Kevin

PY - 2009

Y1 - 2009

N2 - Optical and near-infrared photometry and optical spectroscopy are reported for SN 2003bg, starting a few days after explosion and extending for a period of more than 300 days. Our early-time spectra reveal the presence of broad, high-velocity Balmer lines. The nebular-phase spectra, on the other hand, show a remarkable resemblance to those of Type Ib/c supernovae, without clear evidence for hydrogen. Near maximum brightness SN 2003bg displayed a bolometric luminosity comparable to that of other Type I hypernovae unrelated to gamma-ray bursts, implying a rather normal amount of 56Ni production (0.1-0.2 M) compared with other such objects. The bolometric light curve of SN 2003bg, on the other hand, is remarkably broad, thus suggesting a relatively large progenitor mass at the moment of explosion. These observations, together with the large value of the kinetic energy of expansion established in the accompanying paper, suggest that SN 2003bg can be regarded as a Type IIb hypernova.

AB - Optical and near-infrared photometry and optical spectroscopy are reported for SN 2003bg, starting a few days after explosion and extending for a period of more than 300 days. Our early-time spectra reveal the presence of broad, high-velocity Balmer lines. The nebular-phase spectra, on the other hand, show a remarkable resemblance to those of Type Ib/c supernovae, without clear evidence for hydrogen. Near maximum brightness SN 2003bg displayed a bolometric luminosity comparable to that of other Type I hypernovae unrelated to gamma-ray bursts, implying a rather normal amount of 56Ni production (0.1-0.2 M) compared with other such objects. The bolometric light curve of SN 2003bg, on the other hand, is remarkably broad, thus suggesting a relatively large progenitor mass at the moment of explosion. These observations, together with the large value of the kinetic energy of expansion established in the accompanying paper, suggest that SN 2003bg can be regarded as a Type IIb hypernova.

KW - Supernovae: general

UR - http://www.scopus.com/inward/record.url?scp=70549094395&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70549094395&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/703/2/1612

DO - 10.1088/0004-637X/703/2/1612

M3 - Article

AN - SCOPUS:70549094395

SN - 0004-637X

VL - 703

SP - 1612

EP - 1623

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

Supernova 2003bg: The first type IIb hypernova

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Keywords

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