What is the progenitor of the Type Ia SN 2014J?
Paper i proceeding, 2014
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
Consejo Superior de Investigaciones Científicas (CSIC)
Centro de Estudios de Física del Cosmos de Aragón
P. Lundqvist
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
Consejo Superior de Investigaciones Científicas (CSIC)
C. Fransson
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-Gesellschaft
M. K. Argo
University of Manchester
J. C. Guirado
Universitat de Valencia
Max-Planck-Gesellschaft
Proceedings of the 11th Scientific Meeting of the Spanish Astronomical Society - Highlights of Spanish Astrophysics VIII, SEA 2014
540-546
11th Scientific Meeting of the Spanish Astronomical Society - Highlights of Spanish Astrophysics VIII, SEA 2014
Teruel, Spain,
Teruel, Spain,
Ämneskategorier (SSIF 2011)
Astronomi, astrofysik och kosmologi
Fundament
Grundläggande vetenskaper
Infrastruktur
Onsala rymdobservatorium