[mesa-users] evolving higher mass (e..g. 3Msun) through agb to wd

[Jieun Choi]

Hi Dave,

I've found that the following inlist successfully evolves a 2M star well on
to the WD cooling sequence in a reasonable amount of time (~1 day).

Cheers,
Jieun

On Fri, Jan 18, 2013 at 10:43 AM, Bill Paxton <paxton at kitp.ucsb.edu> wrote:

>
> On Jan 18, 2013, at 10:30 AM, Dave Spiegel wrote:
>
> > I can run a 1-Msun star through the post-MS stages and get a WD at the
> end within a day or only a little longer.  But, for higher-mass stars
> (e.g., 3-Msun), MESA cranks away for more than a week, doing hundreds of
> thermal pulses, and still hasn't gotten to a WD when I'm forced by
> frustration to hit ctrl-c.  Is there something I could do differently to
> end up with a WD at the end of a high-mass-star run in a reasonable amount
> of time?
>
>
>
> Hi Dave,
>
> The only solution I've found is shown in test_suite/make_co_wd --- get the
> run_star_extras in addition to the inlist.
> It runs with "okay_to_reduce_gradT_excess" (aka, MLT++), and after the 1st
> thermal pulse on the agb, it
> turns up the wind to get rid of the envelope.   Seems that just as we need
> something extra when we go from
> 20 Msun to 30 Msun to get past he burning, we also need help on the agb
> when we go beyond about 2 Msun.
>
> Good luck!
>
> Cheers,
> Bill
>
>
>
>
>
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