What is the progenitor of the Type Ia SN 2014J?
Paper in 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.
Author
Miguel Angel Perez-Torres
Centro de Estudios de Física del Cosmos de Aragón
Institute of Astrophysics of Andalusia (IAA)
P. Lundqvist
The Oskar Klein Centre
Stockholm University
R. J. Beswick
University of Manchester
C. I. Bjornsson
Stockholm University
T .W. B. Muxlow
University of Manchester
Z. Paragi
Joint Institute for VLBI in Europe (JIVE)
S. Ryder
Australian Astronomical Observatory
Antxon Alberdi
Institute of Astrophysics of Andalusia (IAA)
C. Fransson
Stockholm University
The Oskar Klein Centre
J. M. Marcaide
Universitat de Valencia
Ivan Marti-Vidal
Chalmers, Earth and Space Sciences, Onsala Space Observatory
Eduardo Ros
Max-Planck Institute for Radio Astronomy
Universitat de Valencia
M. K. Argo
University of Manchester
J. C. Guirado
Universitat de Valencia
Max-Planck Institute for Radio Astronomy
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,
Subject Categories
Astronomy, Astrophysics and Cosmology
Roots
Basic sciences
Infrastructure
Onsala Space Observatory