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

M. A. Pérez-Torres, P. Lundqvist, R. J. Beswick, C. I. Björnsson, T. W. B. Muxlow, Z. Paragi, S. Ryder, A. Alberdi, C. Fransson, J. M. Marcaide, I. Martí-Vidal, E. Ros, M. K. Argo, J. C. Guirado

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

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 M ≲ 7.0 × 1010 M yr1 (for a wind speed of 100 km s1). 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
Subtitle of host publicationProceedings of the XI Scientific Meeting of the Spanish Astronomical Society (SEA) held in Teruel, September 8-12, 2014
Place of PublicationTeruel
PublisherSpanish Astronomical Society
Pages540-546
Number of pages7
ISBN (Print)9788460687603
Publication statusPublished - 2014
Externally publishedYes
Event11th Scientific Meeting of the Spanish Astronomical Society - Highlights of Spanish Astrophysics VIII, SEA 2014 - Teruel, Spain
Duration: 8 Sep 201412 Sep 2014

Conference

Conference11th Scientific Meeting of the Spanish Astronomical Society - Highlights of Spanish Astrophysics VIII, SEA 2014
CountrySpain
CityTeruel
Period8/09/1412/09/14

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