Pair-Instability Supernovae of Non-Zero Metallicity Stars

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

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

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 languageEnglish
Title of host publicationAstronomical Society of the Pacific Conference Series
Subtitle of host publicationNumerical Modeling of Space Plasma Flows ASTRONUM-2014
EditorsNikolai V Pogorelov, Edouard Audit, Gary P Zank
Place of PublicationSan Francisco CA USA
PublisherAstronomical Society of the Pacific
Number of pages6
Volume498
ISBN (Electronic)9781583818817
ISBN (Print)9781583818800
Publication statusPublished - 2015
EventAnnual International Conference on Numerical Modeling of Space Plasma Flows (ASTRONUM) 2014 - Long Beach, United States of America
Duration: 23 Jun 201427 Jun 2014
Conference number: 9th
http://www.icnsmeetings.com/conference/astronum2014/

Publication series

NameAstronomical Society of the Pacific Conference Series
PublisherAstronomical Society of the Pacific
Volume498

Conference

ConferenceAnnual International Conference on Numerical Modeling of Space Plasma Flows (ASTRONUM) 2014
Abbreviated titleASTRONUM 2014
CountryUnited States of America
CityLong Beach
Period23/06/1427/06/14
Internet address

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