Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..401..131t&link_type=abstract
RS Ophiuchi (2006) and the Recurrent Nova Phenomenon ASP Conference Series, Vol. 401, proceedings of the conference held 12-14 J
Astronomy and Astrophysics
Astronomy
1
Scientific paper
The thermonuclear runaway model for recurrent novae (RNe) may invoke three ingredients to reproduce the short recurrence time of these events: (1) a white dwarf (WD) close to the Chandrasekhar limit (2) that the WD be hot and (3) a high accretion rate, dot M. The relative importance of each of these is discussed by evaluating how each modifies the thermal structure of the accreting layer of the WD. This comparison shows that, in terms of the runaway ignition mechanism, RNe form a relatively continuous extentsion of Classical Novae (CNe) in short-period binaries accreting due to Roche Lobe overflow. While the WD core temperature is an essential element in setting the conditions of the runaway in those low-dot M systems, it is found to be relatively unimportant at the extremely high dot M characteristic of RNe. By contrast, both the mass and dot M are found to be essential to achieve the short recurrence times observed in RNe such as RS Oph.
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