Astronomy and Astrophysics – Astronomy
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.4503l&link_type=abstract
American Astronomical Society Meeting 210, #45.03; Bulletin of the American Astronomical Society, Vol. 39, p.159
Astronomy and Astrophysics
Astronomy
Scientific paper
We have reported in a previous work that 10-15% of white dwarf stars are expected to experience a very late helium pulse (the born again phenomenon). Because as many as half of all normal stars are believed to occur in a binary system, it is reasonable to assume that some of these outburst stars will have a binary companion. If the separation distance is close enough, the reflection effect can induce mass transfer onto the outbursting white dwarf. The so-called reflection effect has been shown to be effective in inducing mass transfer from a companion star onto a hot white dwarf star. That is, if a hot white dwarf is in a close binary system, it can irradiate its companion and enhance mass transfer onto itself. This effect may be particularly enhanced during the hot blue phase of the born-again star. We explore here the effects of mass transfer due to irradiation on the evolution of very late thermal pulse objects. We have previously invoked this scenario as a possible cause for the sudden outburst of V838 Monocerotis.
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