The explosion of supernova 2011fe in the frame of the core-degenerate scenario

Noam Soker*, Enrique García-Berro, Leandro G. Althaus

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

We argue that the properties of the Type Ia supernova (SN Ia) SN 2011fe can be best explained within the frame of the core-degenerate (CD) scenario. In the CD scenario, a white dwarf (WD) merges with the core of an asymptotic giant branch (AGB) star and forms a rapidly rotating WD, with a mass close to and above the critical mass for explosion. Rapid rotation prevents immediate collapse and/or explosion. Spinning down over a time of 0-1010 yr brings theWD to explosion. A very long delayed explosion to post-crystallization phase, which lasts for about 2 × 109 yr, leads to the formation of a highly carbon-enriched outer layer. This can account for the carbon-rich composition of the fastest-moving ejecta of SN 2011fe. In reaching the conclusion that the CD scenario best explains the observed properties of SN 2011fe, we consider both its specific properties, like a very compact exploding object and carbon-rich composition of the fastest-moving ejecta, and the general properties of SNe Ia

Original languageEnglish
Article numberslt142
Pages (from-to)L66-L70
JournalMonthly Notices of the Royal Astronomical Society: Letters
Volume437
Issue number1
DOIs
StatePublished - Dec 2013
Externally publishedYes

Keywords

  • General - supernovae
  • Individual
  • Sn 2011fe
  • Supernovae

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