Browsing by Author "Bravo, E."

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    Stable nickel production in type Ia supernovae: A smoking gun for the progenitor mass?
    (2022) Blondin, S.; Bravo, E.; Timmes, F. X.; Dessart, L.; Hillier, D. J.
    Context. At present, there are strong indications that white dwarf (WD) stars with masses well below the Chandrasekhar limit (M-Ch approximate to 1.4 M-circle dot) contribute a significant fraction of SN Ia progenitors. The relative fraction of stable iron-group elements synthesized in the explosion has been suggested as a possible discriminant between M-Ch and sub-M-Ch events. In particular, it is thought that the higher-density ejecta of M-Ch WDs, which favours the synthesis of stable isotopes of nickel, results in prominent [Ni II] lines in late-time spectra (greater than or similar to 150 d past explosion).