What is the progenitor of the Type Ia SN 2014J?

M A Pérez-Torres, P Lundqvist, Robert Beswick, C I Björnsson, T W B Muxlow, Z Paragi, S Ryder, A Alberdi, C Fransson, J M M Marcaide, I Martí-Vidal, E Ros, M K Argo, J C Guirado, F Figueras, C Hernández-Monteagudo, J Trujillo Bueno, L Valdivielso, A J Cenarro (Editor)

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    We report the deepest radio interferometric observations of the closest Type Ia supernova in decades, SN 2014J, which exploded in the nearby galaxy M 82. These observations represent, together with radio observations of SNe 2011fe, the most sensitive radio studies of a Type Ia SN ever. We constrain the mass-loss rate from the progenitor system of SN 2014J to dot{M} ≲ 7.0EE{-10} msunyr (for a wind speed of 100 kms). Our deep upper limits favor a double-degenerate scenario-involving two WD stars-for the progenitor system of SN 2014J, as such systems have less circumstellar gas than our upper limits. By contrast, most single-degenerate scenarios, i.e., the wide family of progenitor systems where a red giant, main-sequence, or sub-giant star donates mass to a exploding white dwarf, are ruled out by our observations. The evidence from SNe 2011fe and 2014J points in the direction of a double-degenerate scenario for both.
    Original languageEnglish
    Title of host publicationHighlights of Spanish Astrophysics VIII, Proceedings of the XI Scientific Meeting of the Spanish Astronomical Society
    EditorsA J Cenarro
    Number of pages7
    Publication statusPublished - May 2015
    EventHighlights of Spanish Astrophysics VIII -
    Duration: 1 Jan 1824 → …


    ConferenceHighlights of Spanish Astrophysics VIII
    Period1/01/24 → …
    Internet address


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