On the role of the accretion rate in nova outbursts

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Novae, Stellar Mass Accretion, White Dwarf Stars, Hydrogen, Mass To Light Ratios, Stellar Envelopes, Stellar Luminosity, Stellar Mass Ejection, Stellar Models, Thermonuclear Reactions

Scientific paper

The role of the accretion rate in determining the outcome of the accretion of hydrogen-rich material onto a 1.25 solar mass C/O white dwarf is investigated. It is found that there is an upper limit to the mass accretion rate that leads to a nova outburst. The upper limit is between 10 to the -8th and 10 to the -9th solar masses/year for a 1.25 solar mass white dwarf. Below this upper limit, the outburst characteristics are very similar for accretion rates down to 10 to the -11th solar masses/year.

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