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Title: Evolution and explosion of the most massive asymptotic giant branch star

The most massive asymptotic giant branch (AGB) stars can form a critical mass of ONe core at its center. The collapse of such a critical ONe core may end up as an Electron Capture Supernova (ECSN). We have accomplished a progenitor calculation for ECSN for the first time in more than two decades and have updated a pre-explosion structure for this model. Some details for ONe core formation and important mechanisms for the core contraction are shown. We discuss how the envelope mass loss affects the predicted existence of ECSN, and what physics is needed to model for a plausible structure of ECSN progenitor.
Authors:
;  [1] ;  [2]
  1. Department of Astronomy, The University of Tokyo, Tokyo 113-0033 (Japan)
  2. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
Publication Date:
OSTI Identifier:
22280451
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1594; Journal Issue: 1; Conference: OMEG12: 12. international symposium on origin of matter and evolution of galaxies, Tsukuba (Japan), 18-21 Nov 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; ASYMPTOTIC SOLUTIONS; CONTRACTION; COSMOLOGY; CRITICAL MASS; ELECTRON CAPTURE; GIANT STARS; MASS TRANSFER; STAR EVOLUTION; STELLAR WINDS