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From: Bill P. <pa...@ki...> - 2014-06-26 20:46:26
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Hi Manos, Please send inlists and all details necessary to reproduce a sample case. I'd like to know how far the evolution has gone when convergence fails. In the past, this mass range has ignited Ne20 off-center after C/O burning. It then takes a very large number of timesteps for the burning front to advance inward to the center. The advanced is limited by not being able to deplete the Ne20 over a significant mass range at once. With convection that works to help the burning go relatively quickly. For inward burning, there is no help from mixing --- unless you crank up overshooting below the burn. Without the help of overshooting to drive things inward faster, it has to creep inward bit by bit. -Bill On Jun 26, 2014, at 1:38 PM, Manos Chatzopoulos wrote: > Dear all, > > Has anyone managed to have a converged MESA model all the way from > pre-MS to pre-supernova (core-collapse) > in this rather interesting mass range of 11 - 14 Msun? Stars around this > mass range are thought to make electron-capture > SN progenitors with O/Ne/Mg cores, but when I try running them they > always seem to fail to converge past > core C/O burning. Is this relevant to the core becoming significantly > degenerate? Any insight on this would be > appreciated. > > Best, > > Manos > > ------------------------------------------------------------------------------ > Open source business process management suite built on Java and Eclipse > Turn processes into business applications with Bonita BPM Community Edition > Quickly connect people, data, and systems into organized workflows > Winner of BOSSIE, CODIE, OW2 and Gartner awards > http://p.sf.net/sfu/Bonitasoft > _______________________________________________ > mesa-users mailing list > mes...@li... > https://lists.sourceforge.net/lists/listinfo/mesa-users |