The final decline of novae and the hibernation hypothesis

Details The final decline of novae and the hibernation hypothesis The final decline of novae and the hibernation hypothesis

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.258..629d&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 258, no. 3, p. 629-638.

Astronomy and Astrophysics

Astronomy

31

Accretion Disks, Cataclysmic Variables, Novae, Stellar Evolution, Light Curve, Stellar Luminosity, Stellar Mass Accretion, Stellar Orbits

Scientific paper

Analyses of long series of visual and photoelectric observations of nine old novae yield a mean rate of decline of 10 +/- 3 millimag per year, half a century after outburst. Individual objects may deviate markedly from the mean, showing more rapid decline or even brightening. This is compatible with predictions of the hibernation hypothesis. The slopes appear to depend on orbital period, indicating that irradiation-induced mass transfer powers at least part of the accretion luminosity of postnovae. Objects with orbital periods below 5 hr show a stronger tendency to enter hibernation in the centuries following outburst than those with longer periods.

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