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Astron. Astrophys. 352, 563-566 (1999)

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Post nova white dwarf cooling in V1500 Cygni

M.W. Somers and T. Naylor

Department of Physics, Keele University, Keele, Staffordshire, ST5 5BG, UK

Received 26 July 1999 / Accepted 6 October 1999


We use the irradiated secondary star in the remnant of Nova Cyg 1975 as a probe of the cooling white dwarf. At superior conjunction the flux in the B band is dominated by the irradiated face of the secondary star. The heated face produces an orbital modulation which is dependent on the strength of the irradiating source. We demonstrate that the cooling rate of the white dwarf is consistent with the theoretical model of Prialnik (1986).

Key words: stars: binaries: spectroscopic – stars: individual: V1500 Cyg – stars: novae, cataclysmic variables – stars: binaries: close – stars: binaries: eclipsing – stars: white dwarfs

Send offprint requests to: T. Naylor (timn@astro.keele.ac.uk)

© European Southern Observatory (ESO) 1999

Online publication: December 2, 1999