[mesa-users] Binary capabilities on MESA

Roni Waldman roni181066 at gmail.com
Tue Oct 9 11:55:00 EDT 2012

Hi Bill,
Great. I hope you can do this soon.
When you do that, I suggest another fix:
If you set wind mass loss for the primary, it does not do roche lobe mass
I think both stars should lose mass according to the wind prescription when
there is no roche lobe overflow, and when there is - the wind for both
stars should be switched off and mass transfer should be switched on.

On Tue, Oct 9, 2012 at 5:44 PM, Bill Paxton <paxton at kitp.ucsb.edu> wrote:

> Hi Roni,
> Good catch -- that's a bug.   The code is correctly updating the
> "companion_mass" variable,
> but it isn't actually causing the model for the companion to gain mass
> accordingly:
> we calculate what the mass change should be, but we don't make it happen.
> I'll add this to the list -- hopefully there will be a fix soon.
> -Bill
> On Oct 9, 2012, at 6:49 AM, Roni Waldman wrote:
> > Hi,
> > Following up on a recent discussion here, I started looking at binary
> evolution with MESA.
> > I ran the binary_rlo_implicit example.
> > I got results looking the same as documented on the mesa forum, however
> something looks peculiar:
> > Whereas the companion mass, as plotted from the history.data of the
> primary is growing in mass, as it should, in the log2 and out file it loses
> mass, according to the mass loss laws set in the inlist2.
> > Can anyone explain what is going on?
> > Cheers,
> > Roni
> >
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