QU Carinae: Type Ia supernova in the making?
Article first published online: 17 AUG 2012
© 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS
Monthly Notices of the Royal Astronomical Society
Volume 425, Issue 2, pages 1585–1590, 11 September 2012
How to Cite
Kafka, S., Honeycutt, R. K. and Williams, R. (2012), QU Carinae: Type Ia supernova in the making?. Monthly Notices of the Royal Astronomical Society, 425: 1585–1590. doi: 10.1111/j.1365-2966.2012.21618.x
- Issue published online: 22 AUG 2012
- Article first published online: 17 AUG 2012
- Manuscript Accepted: 28 JUN 2012
- Manuscript Received: 24 MAY 2012
- NASA Astrobiology Institute
- novae, cataclysmic variables;
- supernovae: general
Variable Na i absorption lines have been reported in a number of Type Ia supernovae (SNeIa). The presence of this circumstellar material suggests that cataclysmic variables (CVs) with a giant donor star may be the progenitors of these SNeIa. We present echelle spectra of the CV QU Carinae which strengthen the connection between CVs of the V Sge class, the accretion wind evolution scenario, variable wind features, variable Na i absorption and SNeIa. This thread not only provides insight into the spectral peculiarities of QU Car, but also links SNeIa as a class with their parent systems.