From: Alessandro P. <ale...@gm...> - 2010-12-03 19:30:19
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Dear MESA developers, I am trying to simulate a set of binaries with a low mass donor star (typically below 1 Msun) with short orbital period (typically below ~1 day). In my simulations I need to include a wind mass loss recipe, and I'm using the de Jager ones. >From a theoretical point of view, if I use a star of, say, 1 Msun, then this will have a rotational period of about 1 month, like our Sun. Tidal synchronization however will shortly bring the stellar rotation to be the same as the orbital period, and therefore much faster than our Sun. In this case I would expect a very large increase in the wind mass loss rate. I am not sure whether these aspects are included in the code, from a quick inspection I couldn't find anything like this, but only the possibility of setting the "eta" value for the wind of non-rotating and rotating models. Can you please confirm that the rotation and its evolution (and the subsequent effect on the wind loss) is not included as a feature of MESA ? Also, in the binary evolution I can't find magnetic braking, but only the GW angular momentum loss. Is this also not yet included in the code ? On a separate note, I am planning to write a quick update for the MESA code to include the possibility of evolving a grid of binaries with variable initial orbital period, donor and accretor mass. Since I'm not a Fortran programmer as good as you are, is some of you available to give me some help in the next days ? Who should I contact ? Many thanks ! Ale |