What is the progenitor of the Type Ia SN 2014J?
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2015

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 lower than 7.0 × 10^(−10) M yr^(−1) (for a wind speed of 100 km s^(−1) ). 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.

Författare

Miguel Angel Perez-Torres

Instituto de Astrofisica de Andalucía (IAA)

Centro de Estudios de Física del Cosmos de Aragón

P. Lundqvist

The Oskar Klein Centre

Stockholms universitet

R. J. Beswick

University of Manchester

C. I. Bjornsson

Stockholms universitet

T .W. B. Muxlow

University of Manchester

Z. Paragi

Joint Institute for VLBI in Europe (JIVE)

S. Ryder

Australian Astronomical Observatory

Antxon Alberdi

Instituto de Astrofisica de Andalucía (IAA)

C. Fransson

The Oskar Klein Centre

Stockholms universitet

J. M. Marcaide

Universitat de Valencia

Ivan Marti-Vidal

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

Eduardo Ros

Universitat de Valencia

Max-Planck Institut für Radioastronomie

M. K. Argo

University of Manchester

J. C. Guirado

Max-Planck Institut für Radioastronomie

Universitat de Valencia

11th Scientific Meeting of the Spanish Astronomical Society - Highlights of Spanish Astrophysics VIII, SEA 2014
Teruel, Spain,

Ämneskategorier

Astronomi, astrofysik och kosmologi

Fundament

Grundläggande vetenskaper

Infrastruktur

Onsala rymdobservatorium

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Senast uppdaterat

2021-04-01