The massive white dwarf in the recurrent nova T CrB

Details The massive white dwarf in the recurrent nova T CrB The massive white dwarf in the recurrent nova T CrB

1997-03-23

arxiv.org/abs/astro-ph/9703146v1

Astronomy and Astrophysics

Astrophysics

Accepted by MNRAS, 6 pages, 8 figures

Scientific paper

We have obtained I, J, H and K band light curves of the recurrent nova T CrB. We find that we can only fit the $J$ band light curve with a Roche-lobe filling secondary star and a dark spot of radius 11-26 derees (90 per cent confidence) centred at the inner Lagrangian point. We obtain limits to the binary inclination of 38-46 degrees (90 per cent confidence) which when combined with the value for the mass function allows us to determine the mass of the compact object to be 1.3-2.5 Mo (90 per cent confidence). This mass range is consistent with the Chandrasekhar limiting white dwarf mass, and so we provide evidence needed to support the outbursts in recurrent novae in terms of a thermonuclear runaway process on the surface of a massive 1.4 Mo white dwarf.

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