[Mesa-users] Mesa-users Digest, Vol 95, Issue 4

Tue Jun 17 13:47:25 UTC 2025

Hi Ewen,
Yes an inlist would be very useful! maybe some properties of your models
when it approaches the blue egde too

Also, what exactly are you not successful with? dropping the timestep? if
nothing else works you can always impose a small max_timestep!
Have you tried imposing more restrictive timestep controls? delta_lgL,
delta_lgR and delta_lgTeff and associates may be helpful! decreasing
varcontrol too

Cheers,
Ana Antonini

<mesa-users-request at lists.mesastar.org> escreveu (terça, 17/06/2025 à(s)
09:01):

> Send Mesa-users mailing list submissions to
>         mesa-users at lists.mesastar.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
>         https://lists.mesastar.org/mailman/listinfo/mesa-users
> or, via email, send a message with subject or body 'help' to
>         mesa-users-request at lists.mesastar.org
>
> You can reach the person managing the list at
>         mesa-users-owner at lists.mesastar.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Mesa-users digest..."
>
>
> Today's Topics:
>
>    1. Re:  Evolving 2?3?M? models from TAMS to Red Clump for GYRE
>       (Meridith Joyce)
>    2. Issues Resolving Pulsations for a Second-Crossing Cepheid
>       (Ewen Francis MacKenzie Whyte)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 16 Jun 2025 11:09:32 -0600
> From: Meridith Joyce <meridith.joyce at gmail.com>
> To: Bruno Lustosa <bruno.moura.pesquisa at gmail.com>
> Cc: mesa-users at lists.mesastar.org
> Subject: Re: [Mesa-users]  Evolving 2?3?M? models from TAMS to Red
>         Clump for GYRE
> Message-ID:
>         <
> CAPfmirc-R8LUi6bAy6_ZAWBpRyy0gz+A5-mE1YEsCF7rLf3aQA at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi Bruno,
>
> Using GYRE on-the-fly, as discussed here (and see related Zenodo / Github
> links and citations) might be a good place to start:
> https://ui.adsabs.harvard.edu/abs/2024ApJ...971..186J/abstract
> The code to do this is public.
>
> There are evolutionary phase-based stopping conditions defined in MESA, of
> the form "stop_at_TACHeB = true" or similar. You can find a list of these
> and their physical definitions in mesa/star/private/star_utils.f90 (search
> "phase_of_evolution").
>
> Cheers,
>
> On Thu, Jun 12, 2025 at 4:27?PM Bruno Lustosa via Mesa-users <
> mesa-users at lists.mesastar.org> wrote:
>
> > Hello everyone,
> >
> > I?m currently using the `1M_pre_ms_to_wd` test case from the
> > `mesa-24.08.1` release.
> >
> > My goal is to evolve a grid of stars with masses between 2.0 and 3.0 M?,
> > with varying initial_z, but I?m only interested in the evolutionary phase
> > from the Terminal Age Main Sequence (TAMS) to the Red Clump.
> >
> > I would appreciate suggestions on how to:
> >
> > 1. Stop the evolution at TAMS and resume from that point (or start
> > directly near the TAMS),
> > 2. Define a suitable stopping condition at the clump (e.g., core
> > He-burning onset or a threshold He-burning luminosity),
> > 3. Generate output suitable for use with GYRE, including proper
> > profile_columns.list and high-resolution models.
> >
> > If anyone has recommendations on inlist setup, stopping flags, or
> > resolution adjustments for this evolutionary stage, I?d be very grateful.
> >
> > Best regards,
> > Bruno
> > _______________________________________________
> > mesa-users at lists.mesastar.org
> > https://lists.mesastar.org/mailman/listinfo/mesa-users
> >
> >
>
> --
>
> Assistant Professor Meridith Joyce, PhD
> Department of Physics and Astronomy
> & School of Computing
> College of Engineering and Physical Sciences
> University of Wyoming
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> https://lists.mesastar.org/pipermail/mesa-users/attachments/20250616/f02f7328/attachment-0001.htm
> >
>
> ------------------------------
>
> Message: 2
> Date: Mon, 16 Jun 2025 19:57:30 +0000
> From: Ewen Francis MacKenzie Whyte <efmackenziewhyte at mta.ca>
> To: mesa-users <mesa-users at lists.mesastar.org>
> Subject: [Mesa-users] Issues Resolving Pulsations for a
>         Second-Crossing Cepheid
> Message-ID:
>         <
> YQXPR01MB4627673B2C3A5A8E7F2E9B64A370A at YQXPR01MB4627.CANPRD01.PROD.OUTLOOK.COM
> >
>
> Content-Type: text/plain; charset="windows-1252"
>
> Hi all,
>
> My goal is to evolve a 10 solar mass Cepheid to the blue loop and save the
> model when it is close to the blue edge of the instability strip during the
> second crossing. At that point I would like to drop the timestep to a few
> hours and start generating a light curve to resolve the Cepheid?s
> pulsations.
>
> Thus far I have had no success in this endeavour. I have tried many
> different solutions like increasing the number of zones, attempting RSP
> analysis, lowering the star?s mass, using a finer temporal resolution, and
> so on. I am happy to provide inlists that I used if that helps.
> Unfortunately, none of my results have pointed to a pulsating Cepheid.
>
> I figured you all might have some new ideas for me to try, or controls
> that I am missing. Let me know your thoughts!
>
> Sincerely,
>
> Ewen
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> https://lists.mesastar.org/pipermail/mesa-users/attachments/20250616/2f87ecb2/attachment-0001.htm
> >
>
> End of Mesa-users Digest, Vol 95, Issue 4
> *****************************************
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20250617/b76047a6/attachment.htm>