[Mesa-users] Binaries and wide orbital separation

[Rob Farmer]

Hi,
It's hard to say what is happening without seeing both your inlists and any
plots you have made to show what is going on.

When do you reach the min timestep limit? What is your star doing at this
time? Is it at the very start of RLOF? Or is it because your star has
encountered problems in the core? Or somewhere else? We can't tell unless
you make some plots to explore what is going on.

Rob


On Mon, 26 Oct 2020 at 08:24, Amedeo Romagnolo via Mesa-users <
mesa-users at lists.mesastar.org> wrote:

> Hi all,
>
> I have a problem when simulating the evolution of a binary system.
> My goal would be to make the more massive star to go into RLOF, which is
> easily doable when I'm not setting a wide orbital separation (like a period
> in the order of 10^5 yr). In this case, instead, whatever I do, it seems
> that the code stops because a too small timestep has been reached, and
> therefore the star's radius has no time to grow enough to go beyond its
> Roche Lobe radius.
>
> Do you have any recommendations in this regard?
>
> Additionally, just another small question: is there an output in MESA that
> shows at the end of the simulation the final total metallicity of the
> simulated star?
>
> Thanks in advance,
>
> Amedeo
>
>
> <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.avast.com%2Fsig-email%3Futm_medium%3Demail%26utm_source%3Dlink%26utm_campaign%3Dsig-email%26utm_content%3Dwebmail&data=04%7C01%7Cr.j.farmer%40uva.nl%7C43ee58ad9bec46f5c77908d8798039a0%7Ca0f1cacd618c4403b94576fb3d6874e5%7C1%7C1%7C637392938912210298%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=Dnt1saaISTOvDuBPuv4rCWmJ9ixXM1432vJO82VrlkY%3D&reserved=0> Virus-free.
> www.avast.com
> <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.avast.com%2Fsig-email%3Futm_medium%3Demail%26utm_source%3Dlink%26utm_campaign%3Dsig-email%26utm_content%3Dwebmail&data=04%7C01%7Cr.j.farmer%40uva.nl%7C43ee58ad9bec46f5c77908d8798039a0%7Ca0f1cacd618c4403b94576fb3d6874e5%7C1%7C1%7C637392938912210298%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=Dnt1saaISTOvDuBPuv4rCWmJ9ixXM1432vJO82VrlkY%3D&reserved=0>
> <#m_-7576236462617025687_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20201026/aa076e01/attachment.htm>