Spectra of type ia supernovae from double degenerate mergers

Chris L. Fryer; Ashley J. Ruiter; Krzysztof Belczynski; Peter J. Brown; Filomena Bufano; Steven Diehl; Christopher J. Fontes; Lucille H. Frey; Stephen T. Holland; Aimee L. Hungerford; Stefan Immler; Paolo Mazzali; Casey Meakin; Peter A. Milne; Cody Raskin; Francis Timmes

doi:10.1088/0004-637X/725/1/296

Spectra of type ia supernovae from double degenerate mergers

Chris L. Fryer, Ashley J. Ruiter, Krzysztof Belczynski, Peter J. Brown, Filomena Bufano, Steven Diehl, Christopher J. Fontes, Lucille H. Frey, Stephen T. Holland, Aimee L. Hungerford, Stefan Immler, Paolo Mazzali, Casey Meakin, Peter A. Milne, Cody Raskin, Francis Timmes

Earth and Space Exploration, School of (SESE)

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

69 Scopus citations

Abstract

The merger of two white dwarfs (aka double-degenerate merger) has often been cited as a potential progenitor of Type Ia supernovae. Here we combine population synthesis, merger, and explosion models with radiationhydrodynamics light-curve models to study the implications of such a progenitor scenario on the observed Type Ia supernova population. Our standard model, assuming double-degenerate mergers do produce thermonuclear explosions, produces supernova light curves that are broader than the observed type Ia sample. In addition, we discuss how the shock breakout and spectral features of these double-degenerate progenitors will differ from the canonical bare Chandrasekhar-massed explosionmodels.We conclude with a discussion of howone might reconcile these differences with current observations.

Original language	English (US)
Pages (from-to)	296-308
Number of pages	13
Journal	Astrophysical Journal
Volume	725
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/725/1/296
State	Published - Dec 10 2010

Keywords

Binaries: close
Supernovae: general
White dwarfs Online-only material: color figures

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-637X/725/1/296

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Fryer, C. L., Ruiter, A. J., Belczynski, K., Brown, P. J., Bufano, F., Diehl, S., Fontes, C. J., Frey, L. H., Holland, S. T., Hungerford, A. L., Immler, S., Mazzali, P., Meakin, C., Milne, P. A., Raskin, C., & Timmes, F. (2010). Spectra of type ia supernovae from double degenerate mergers. Astrophysical Journal, 725(1), 296-308. https://doi.org/10.1088/0004-637X/725/1/296

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title = "Spectra of type ia supernovae from double degenerate mergers",

abstract = "The merger of two white dwarfs (aka double-degenerate merger) has often been cited as a potential progenitor of Type Ia supernovae. Here we combine population synthesis, merger, and explosion models with radiationhydrodynamics light-curve models to study the implications of such a progenitor scenario on the observed Type Ia supernova population. Our standard model, assuming double-degenerate mergers do produce thermonuclear explosions, produces supernova light curves that are broader than the observed type Ia sample. In addition, we discuss how the shock breakout and spectral features of these double-degenerate progenitors will differ from the canonical bare Chandrasekhar-massed explosionmodels.We conclude with a discussion of howone might reconcile these differences with current observations.",

keywords = "Binaries: close, Supernovae: general, White dwarfs Online-only material: color figures",

author = "Fryer, {Chris L.} and Ruiter, {Ashley J.} and Krzysztof Belczynski and Brown, {Peter J.} and Filomena Bufano and Steven Diehl and Fontes, {Christopher J.} and Frey, {Lucille H.} and Holland, {Stephen T.} and Hungerford, {Aimee L.} and Stefan Immler and Paolo Mazzali and Casey Meakin and Milne, {Peter A.} and Cody Raskin and Francis Timmes",

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doi = "10.1088/0004-637X/725/1/296",

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T1 - Spectra of type ia supernovae from double degenerate mergers

AU - Fryer, Chris L.

AU - Ruiter, Ashley J.

AU - Belczynski, Krzysztof

AU - Brown, Peter J.

AU - Bufano, Filomena

AU - Diehl, Steven

AU - Fontes, Christopher J.

AU - Frey, Lucille H.

AU - Holland, Stephen T.

AU - Hungerford, Aimee L.

AU - Immler, Stefan

AU - Mazzali, Paolo

AU - Meakin, Casey

AU - Milne, Peter A.

AU - Raskin, Cody

AU - Timmes, Francis

PY - 2010/12/10

Y1 - 2010/12/10

N2 - The merger of two white dwarfs (aka double-degenerate merger) has often been cited as a potential progenitor of Type Ia supernovae. Here we combine population synthesis, merger, and explosion models with radiationhydrodynamics light-curve models to study the implications of such a progenitor scenario on the observed Type Ia supernova population. Our standard model, assuming double-degenerate mergers do produce thermonuclear explosions, produces supernova light curves that are broader than the observed type Ia sample. In addition, we discuss how the shock breakout and spectral features of these double-degenerate progenitors will differ from the canonical bare Chandrasekhar-massed explosionmodels.We conclude with a discussion of howone might reconcile these differences with current observations.

AB - The merger of two white dwarfs (aka double-degenerate merger) has often been cited as a potential progenitor of Type Ia supernovae. Here we combine population synthesis, merger, and explosion models with radiationhydrodynamics light-curve models to study the implications of such a progenitor scenario on the observed Type Ia supernova population. Our standard model, assuming double-degenerate mergers do produce thermonuclear explosions, produces supernova light curves that are broader than the observed type Ia sample. In addition, we discuss how the shock breakout and spectral features of these double-degenerate progenitors will differ from the canonical bare Chandrasekhar-massed explosionmodels.We conclude with a discussion of howone might reconcile these differences with current observations.

KW - Binaries: close

KW - Supernovae: general

KW - White dwarfs Online-only material: color figures

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DO - 10.1088/0004-637X/725/1/296

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SN - 0004-637X

VL - 725

SP - 296

EP - 308

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

Spectra of type ia supernovae from double degenerate mergers

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