TY - JOUR
T1 - The explosion of supernova 2011fe in the frame of the core-degenerate scenario
AU - Soker, Noam
AU - García-Berro, Enrique
AU - Althaus, Leandro G.
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013/12
Y1 - 2013/12
N2 - 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
AB - 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
KW - General - supernovae
KW - Individual
KW - Sn 2011fe
KW - Supernovae
UR - http://www.scopus.com/inward/record.url?scp=84890037996&partnerID=8YFLogxK
U2 - 10.1093/mnrasl/slt142
DO - 10.1093/mnrasl/slt142
M3 - 文章
AN - SCOPUS:84890037996
VL - 437
SP - L66-L70
JO - Monthly Notices of the Royal Astronomical Society: Letters
JF - Monthly Notices of the Royal Astronomical Society: Letters
SN - 1745-3925
IS - 1
M1 - slt142
ER -