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Outbursts of the recurrent nova T Coronae Borealis

Abstract

THE recurrent nova T CrB has long been regarded as an anomaly among cataclysmic variables. It is a binary system consisting of an M3III giant and a blue companion1. From the radial velocity curves, Kraft2 found component masses of ≥ 3.7M and ≥ 2.6M, respectively, later revised downwards to 2.6M and 1.9M by Paczyński3. Nevertheless, the mass of the blue component is clearly greater than the Chandrasekhar limit, even though the blue components of common novae are widely believed to be white dwarfs. The binary period, 227.5 d, is > 300 times longer than that of GK Per3, the longest period known among the remaining cataclysmic variables, and in stark contrast with the 0.0567-d period of WZ Sge, the only other recurrent nova of known binary period. Warner4 has suggested, however, that T CrB is typical of the majority of recurrent novae. In this paper we interpret the behaviour of T CrB in terms of accretion in a binary system.

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WEBBINK, R. Outbursts of the recurrent nova T Coronae Borealis. Nature 262, 271–272 (1976). https://doi.org/10.1038/262271a0

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