Abstract by Aaron Dotter
MESA is an open source project to produce a modern, sophisticated set of modules to be used for computer simulations in stellar astrophysics, including stellar evolution. MESA is capable of modelling massive stars with arbitrary wind models up to core collapse. It does not include a 1-D treatment of rotation at present but that is an active area of development. The current status of the project is described in detail here (http://arxiv.org/abs/1009.1622). I will give a brief overview of MESA massive star evolution.
@MESA authors
ReplyDeleteAre there any plans to implement massive star binary evolution in the nearby future of your project?
What are the time scales for the PMS tracks at the highest masses? They must be extremely short, like a few thousand years?
ReplyDeleteHow long does it take to run a typical model on a desk top or a notebook?
ReplyDeleteI believe that some effort may be underway with respect to rotation. Binary evolution is something that we should be able to do but there is no active development that I am aware of.
ReplyDeletePre-main sequence evolution for the massive stars is very short: for a solar metallicity star of 100Msun, the pre-main sequence time is ~10^4 yrs. This is almost certainly not a legitimate number since no mass is lost or gained during the calculation I showed.
A typical sequence through core He-burning is a matter of 1-2 hours on a reasonably fast desktop. Through the late burning phases to core collapse is a matter of days.