Pair-Instability Supernovae of Non-Zero Metallicity Stars

Ke-Jung Chen; Alexander Heger; Stan Woosley; Ann S Almgren; Daniel J Whalen

Pair-Instability Supernovae of Non-Zero Metallicity Stars

Ke-Jung Chen, Alexander Heger, Stan Woosley, Ann S Almgren, Daniel J Whalen

School of Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

Abstract

Observational evidence suggests that some very massive stars in the local Universe may die as pair-instability supernovae. We present 2D simulations of the pair-instability supernova of a non-zero metallicity star. We find that very little mixing occurs in this explosion because metals in the stellar envelope drive strong winds that strip the hydrogen envelope from the star prior to death. Consequently, a reverse shock cannot form and trigger fluid instabilities during the supernova. Only weak mixing driven by nuclear burning occurs in the earliest stages of the supernova, and it is too weak to affect the observational signatures of the explosion.

Original language	English
Title of host publication	Astronomical Society of the Pacific Conference Series
Subtitle of host publication	Numerical Modeling of Space Plasma Flows ASTRONUM-2014
Editors	Nikolai V Pogorelov, Edouard Audit, Gary P Zank
Place of Publication	San Francisco CA USA
Publisher	Astronomical Society of the Pacific
Number of pages	6
Volume	498
ISBN (Electronic)	9781583818817
ISBN (Print)	9781583818800
Publication status	Published - 2015
Event	Annual International Conference on Numerical Modeling of Space Plasma Flows (ASTRONUM) 2014 - Long Beach, United States of America Duration: 23 Jun 2014 → 27 Jun 2014 Conference number: 9th http://www.icnsmeetings.com/conference/astronum2014/

Publication series

Name	Astronomical Society of the Pacific Conference Series
Publisher	Astronomical Society of the Pacific
Volume	498

Conference

Conference	Annual International Conference on Numerical Modeling of Space Plasma Flows (ASTRONUM) 2014
Abbreviated title	ASTRONUM 2014
Country/Territory	United States of America
City	Long Beach
Period	23/06/14 → 27/06/14
Internet address	http://www.icnsmeetings.com/conference/astronum2014/

Access to Document

245186401-oaFinal published version, 406 KB

http://aspbooks.org/custom/publications/paper/498-0047.html

Cite this

Chen, K.-J., Heger, A., Woosley, S., Almgren, A. S., & Whalen, D. J. (2015). Pair-Instability Supernovae of Non-Zero Metallicity Stars. In N. V. Pogorelov, E. Audit, & G. P. Zank (Eds.), Astronomical Society of the Pacific Conference Series: Numerical Modeling of Space Plasma Flows ASTRONUM-2014 (Vol. 498). (Astronomical Society of the Pacific Conference Series; Vol. 498). Astronomical Society of the Pacific. http://aspbooks.org/custom/publications/paper/498-0047.html

Chen, Ke-Jung ; Heger, Alexander ; Woosley, Stan et al. / Pair-Instability Supernovae of Non-Zero Metallicity Stars. Astronomical Society of the Pacific Conference Series: Numerical Modeling of Space Plasma Flows ASTRONUM-2014. editor / Nikolai V Pogorelov ; Edouard Audit ; Gary P Zank. Vol. 498 San Francisco CA USA : Astronomical Society of the Pacific, 2015. (Astronomical Society of the Pacific Conference Series).

@inproceedings{5211f47ac29d458e9459c7db8682eca9,

title = "Pair-Instability Supernovae of Non-Zero Metallicity Stars",

abstract = "Observational evidence suggests that some very massive stars in the local Universe may die as pair-instability supernovae. We present 2D simulations of the pair-instability supernova of a non-zero metallicity star. We find that very little mixing occurs in this explosion because metals in the stellar envelope drive strong winds that strip the hydrogen envelope from the star prior to death. Consequently, a reverse shock cannot form and trigger fluid instabilities during the supernova. Only weak mixing driven by nuclear burning occurs in the earliest stages of the supernova, and it is too weak to affect the observational signatures of the explosion.",

author = "Ke-Jung Chen and Alexander Heger and Stan Woosley and Almgren, {Ann S} and Whalen, {Daniel J}",

year = "2015",

language = "English",

isbn = "9781583818800",

volume = "498",

series = "Astronomical Society of the Pacific Conference Series",

publisher = "Astronomical Society of the Pacific",

editor = "Pogorelov, {Nikolai V} and Audit, {Edouard } and Zank, {Gary P}",

booktitle = "Astronomical Society of the Pacific Conference Series",

address = "United States of America",

note = "Annual International Conference on Numerical Modeling of Space Plasma Flows (ASTRONUM) 2014, ASTRONUM 2014 ; Conference date: 23-06-2014 Through 27-06-2014",

url = "http://www.icnsmeetings.com/conference/astronum2014/",

}

Chen, K-J, Heger, A, Woosley, S, Almgren, AS & Whalen, DJ 2015, Pair-Instability Supernovae of Non-Zero Metallicity Stars. in NV Pogorelov, E Audit & GP Zank (eds), Astronomical Society of the Pacific Conference Series: Numerical Modeling of Space Plasma Flows ASTRONUM-2014. vol. 498, Astronomical Society of the Pacific Conference Series, vol. 498, Astronomical Society of the Pacific, San Francisco CA USA, Annual International Conference on Numerical Modeling of Space Plasma Flows (ASTRONUM) 2014, Long Beach, California, United States of America, 23/06/14. <http://aspbooks.org/custom/publications/paper/498-0047.html>

Pair-Instability Supernovae of Non-Zero Metallicity Stars. / Chen, Ke-Jung; Heger, Alexander; Woosley, Stan et al.
Astronomical Society of the Pacific Conference Series: Numerical Modeling of Space Plasma Flows ASTRONUM-2014. ed. / Nikolai V Pogorelov; Edouard Audit; Gary P Zank. Vol. 498 San Francisco CA USA: Astronomical Society of the Pacific, 2015. (Astronomical Society of the Pacific Conference Series; Vol. 498).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

TY - GEN

T1 - Pair-Instability Supernovae of Non-Zero Metallicity Stars

AU - Chen, Ke-Jung

AU - Heger, Alexander

AU - Woosley, Stan

AU - Almgren, Ann S

AU - Whalen, Daniel J

N1 - Conference code: 9th

PY - 2015

Y1 - 2015

N2 - Observational evidence suggests that some very massive stars in the local Universe may die as pair-instability supernovae. We present 2D simulations of the pair-instability supernova of a non-zero metallicity star. We find that very little mixing occurs in this explosion because metals in the stellar envelope drive strong winds that strip the hydrogen envelope from the star prior to death. Consequently, a reverse shock cannot form and trigger fluid instabilities during the supernova. Only weak mixing driven by nuclear burning occurs in the earliest stages of the supernova, and it is too weak to affect the observational signatures of the explosion.

AB - Observational evidence suggests that some very massive stars in the local Universe may die as pair-instability supernovae. We present 2D simulations of the pair-instability supernova of a non-zero metallicity star. We find that very little mixing occurs in this explosion because metals in the stellar envelope drive strong winds that strip the hydrogen envelope from the star prior to death. Consequently, a reverse shock cannot form and trigger fluid instabilities during the supernova. Only weak mixing driven by nuclear burning occurs in the earliest stages of the supernova, and it is too weak to affect the observational signatures of the explosion.

M3 - Conference Paper

SN - 9781583818800

VL - 498

T3 - Astronomical Society of the Pacific Conference Series

BT - Astronomical Society of the Pacific Conference Series

A2 - Pogorelov, Nikolai V

A2 - Audit, Edouard

A2 - Zank, Gary P

PB - Astronomical Society of the Pacific

CY - San Francisco CA USA

T2 - Annual International Conference on Numerical Modeling of Space Plasma Flows (ASTRONUM) 2014

Y2 - 23 June 2014 through 27 June 2014

ER -

Chen KJ, Heger A, Woosley S, Almgren AS, Whalen DJ. Pair-Instability Supernovae of Non-Zero Metallicity Stars. In Pogorelov NV, Audit E, Zank GP, editors, Astronomical Society of the Pacific Conference Series: Numerical Modeling of Space Plasma Flows ASTRONUM-2014. Vol. 498. San Francisco CA USA: Astronomical Society of the Pacific. 2015. (Astronomical Society of the Pacific Conference Series).