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The binary channels to electron capture supernovae

par Siess, Lionel ;Lebreuilly, Ugo
Référence Memorie della Societa Astronomica Italiana, Supplementi - Journal of the Italian Astronomical Society, Supplement, 88, 3, page (294-297)
Publication Publié, 2017

Article révisé par les pairs

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Résumé :

Due to the second dredge-up and expected strong mass loss during the thermally pulsing super-AGB phase, the mass range for single stars to evolve as electron capture supernova (ECSN) is very narrow. In this short contribution, we briefly review alternative binary channels and present recent case A & B mass transfer simulations. In these models, the envelope is removed during Roche lobe overflow (RLOF), preventing the occurrence of the second dredge-up and the reduction of the H-free core below the Chandrasekhar mass. The newly formed helium star can then ignite carbon and may end its life as ECSN.