Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-11-28
Hydrogen-Deficient Stars ASP Conference Series, Vol. 391, proceedings of the conference held 17-21 September, 2007, p.203
Astronomy and Astrophysics
Astrophysics
4 Pages, 2 Figures, 1 Table. Presented at the Third Conference in Hydrogen Deficient Stars, Tubingen, September, 2007
Scientific paper
We present numerical simulations of the very late thermal pulse (VLTP) scenario for a wide range of remnant masses. We show that, by taking into account the different possible remnant masses, the fast outburst evolution of V4334 Sgr (a.k.a. Sakurai's Object) and V605 Aql can be reproduced within standard 1D stellar evolution models. A dichotomy in the born again timescales is found, with lower mass remnants evolving in a few years and higher mass remnants (M $\hbox{\rlap{\hbox{\lower4pt\hbox{$\sim$}}}\hbox{$>$}}$ 0.6 M$_{\odot}$) failing to expand due to the H-flash and, as a consequence, evolving in timescales typical of He-shell flash driven born agains ($\sim 100$ yr).
Althaus Leandro G.
Miller Bertolami Marcelo M.
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