Multidimensional simulations of mixing in zero- and solar-metallicity SNe

Candace Church Joggerst, Alexander Heger, Stanford E. Woosley

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2 Citations (Scopus)

Abstract

We present multidimensional simulations of zero- and solar- metallicity stars in the last stages of their lives and estimate their resulting nucleosynthetic output. When primordial stars with masses less than about 100 solar masses explode as supernovae, some portion of the star falls back onto the black hole, while the rest escapes to enrich the next generation of stars. The composition of the escaped gas depends on processes that cannot be adequately modeled in one dimension. Multidimensional simulations are needed to capture the inherently asymmetric processes that enrich the outer layers of the star and determine its final yield. We investigate the effects of Rayleigh-Taylor-induced mixing and asymmetries in the explosion on the final composition of the escaped gas. For spherically symmetric explosions, we find that Rayleigh-Taylor-induced mixing has little effect on the shells interior to oxygen, and so very little material interior to the oxygen shell goes on to enrich the interstellar medium. Some asymmetry in the explosion is needed in order for elements interior to oxygen to escape from the star in significant amounts.

Original languageEnglish
Title of host publicationFirst Stars III
Pages257-259
Number of pages3
Volume990
DOIs
Publication statusPublished - 28 Apr 2008
Externally publishedYes
EventFirst Stars III - Santa Fe, NM, United States of America
Duration: 15 Jul 200720 Jul 2007

Conference

ConferenceFirst Stars III
CountryUnited States of America
CitySanta Fe, NM
Period15/07/0720/07/07

Keywords

  • Hydrodynamics
  • Supernovae

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