QU Carinae: Type Ia supernova in the making?

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Date
2012
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Oxford University Press on behalf of the Royal Astronomical Society
Abstract
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.
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novae, cataclysmic variables, supernova: general
Citation
Kafka, S., Honeycutt, R. K., & Williams, R. (2012). QU Carinae: Type Ia supernova in the making? Monthly Notices of the Royal Astronomical Society, 425(2), 1585-1590. http://dx.doi.org/10.1111/j.1365-2966.2012.21618.x
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© 2012 The Authors
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