Fates of the most massive primordial stars

Ke-Jung Chen; Alexander Heger; Ann Almgren; Stan Woosley

doi:10.1063/1.4754380

Fates of the most massive primordial stars

Ke-Jung Chen, Alexander Heger, Ann Almgren, Stan Woosley

School of Physics and Astronomy

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

Abstract

We present our results of numerical simulations of the most massive primordial stars. For the extremely massive non-rotating Pop III stars over 300M_⊙, they would simply die as black holes. But the Pop III stars with initial masses 140 - 260M_⊙ may have died as gigantic explosions called pair-instability supernovae (PSNe). We use a new radiation-hydrodynamics code CASTRO to study evolution of PSNe. Our models follow the entire explosive burning and the explosion until the shock breaks out from the stellar surface. In our simulations, we find that fluid instabilities occurred during the explosion. These instabilities are driven by both nuclear burning and hydrodynamical instability. In the red supergiant models, fluid instabilities can lead to significant mixing of supernova ejecta and alter the observational signature.

Original language	English
Title of host publication	First Stars IV - From Hayashi to the Future
Subtitle of host publication	Kyoto, Japan; 21-25 May 2012
Editors	Masayuki Umemura, Kazuyuki Omukai
Place of Publication	USA
Publisher	AIP Publishing
Pages	340-342
Number of pages	3
ISBN (Print)	9780735410923
DOIs	https://doi.org/10.1063/1.4754380
Publication status	Published - 2012
Event	Conference on FIRST STARS - From Hayashi to the Future 2012 - Kyoto, Japan Duration: 21 May 2012 → 25 May 2012 Conference number: 4th

Publication series

Name	AIP Conference Proceedings
Publisher	AIP Publishing
Volume	1480
ISSN (Print)	0094-243x

Conference

Conference	Conference on FIRST STARS - From Hayashi to the Future 2012
Country	Japan
City	Kyoto
Period	21/05/12 → 25/05/12

Keywords

Pair-Instability Supernovae
Pop III Stars

Access to Document

10.1063/1.4754380

Link to publication in Scopus

Cite this

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title = "Fates of the most massive primordial stars",

abstract = "We present our results of numerical simulations of the most massive primordial stars. For the extremely massive non-rotating Pop III stars over 300M⊙, they would simply die as black holes. But the Pop III stars with initial masses 140 - 260M⊙ may have died as gigantic explosions called pair-instability supernovae (PSNe). We use a new radiation-hydrodynamics code CASTRO to study evolution of PSNe. Our models follow the entire explosive burning and the explosion until the shock breaks out from the stellar surface. In our simulations, we find that fluid instabilities occurred during the explosion. These instabilities are driven by both nuclear burning and hydrodynamical instability. In the red supergiant models, fluid instabilities can lead to significant mixing of supernova ejecta and alter the observational signature.",

keywords = "Pair-Instability Supernovae, Pop III Stars",

author = "Ke-Jung Chen and Alexander Heger and Ann Almgren and Stan Woosley",

year = "2012",

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language = "English",

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series = "AIP Conference Proceedings ",

publisher = "AIP Publishing",

pages = "340--342",

editor = "Masayuki Umemura and Kazuyuki Omukai",

booktitle = "First Stars IV - From Hayashi to the Future",

address = "United States of America",

note = "Conference on FIRST STARS - From Hayashi to the Future 2012 ; Conference date: 21-05-2012 Through 25-05-2012",

}

Chen, K-J, Heger, A, Almgren, A & Woosley, S 2012, Fates of the most massive primordial stars. in M Umemura & K Omukai (eds), First Stars IV - From Hayashi to the Future: Kyoto, Japan; 21-25 May 2012. AIP Conference Proceedings , vol. 1480, AIP Publishing, USA, pp. 340-342, Conference on FIRST STARS - From Hayashi to the Future 2012, Kyoto, Japan, 21/05/12. https://doi.org/10.1063/1.4754380

Fates of the most massive primordial stars. / Chen, Ke-Jung; Heger, Alexander; Almgren, Ann; Woosley, Stan.

First Stars IV - From Hayashi to the Future: Kyoto, Japan; 21-25 May 2012. ed. / Masayuki Umemura; Kazuyuki Omukai. USA : AIP Publishing, 2012. p. 340-342 (AIP Conference Proceedings ; Vol. 1480).

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

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