[Mesa-users] Studying the pulsation of stars (sdB and sdO stars)

Thu Aug 2 11:25:25 EDT 2018

Thank you for your messages. I followed your advice,  I started to read the lab of the previous summer school. Maybe it the results given by gyre could give a response to my question.

Thanks
Abdel

From: Bill Paxton
Sent: Wednesday, August 1, 7:58 PM
Subject: Re: [Mesa-users] Studying the pulsation of stars (sdB and sdO stars)
To: AbdelBassit Abdessamed Senhadji
Cc: Frank Timmes, mesa-users at lists.mesastar.org, David Arnett

I double-endorse Dave’s advice if what you are asking is can you make the mesa/star model pulse realistically.

Until that ability is in mesa someday, you can still perhaps answer your question by running GYRE to see if it thinks your model is pulsationally unstable.     The test cases ‘gyre_in_mesa_ms’ and ‘gyre_in_mesa_rsg’ are examples.  You’ll have to create your own gyre_in_mesa_subdwarf.

cheers
bill

On Aug 1, 2018, at 4:51 PM, David Arnett via Mesa-users <mesa-users at lists.mesastar.org<mailto:mesa-users at lists.mesastar.org>> wrote:

I endorse Francis Timmes advice, and also add that the sdB stars exhibit issues that go beyond physics (convection and mixing) now in MESA.

On Wed, Aug 1, 2018 at 5:44 PM, Francis Timmes via Mesa-users <mesa-users at lists.mesastar.org<mailto:mesa-users at lists.mesastar.org>> wrote:
one way to learn how to pulsate models with mesa/gyre
is to point your browser to mesastar.org<https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmesastar.org%2F&data=02%7C01%7C%7C03ddb66c697a4f460b8b08d5f80aa8bd%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636687647020546457&sdata=8ydzn94h6bjiiZY97FZau%2FO6P2Ui3RPjw7NtYpaEJq4%3D&reserved=0>

click on education.
there you will see previous mesa summer school labs,
which offer a solid knowledge gaining experience. perhaps
start with conny aert's 2016 lab or alfred gautschy's 2016 lab.

click on guides.
click on warrick ball's overview of the astero module.

good luck!

fxt

> On Aug 1, 2018, at 3:55 PM, AbdelBassit Abdessamed Senhadji <sen-abd at hotmail.fr<mailto:sen-abd at hotmail.fr>> wrote:
>
> Dear MESA users:
>
> I am currently working on subdwarfs stars (sdB and sdO stars).
>
> I obtained many results and some of them were very interesting and I want to see if they pulsate or not. More precisely I want to see if sdO pulsates too much or not.
>
> I generated my results using MESA 10108 and Mesa sdk 20171120.
>
> There is a way on Mesa how I can see that ? Because I have no idea.
>
>
> Thank you in advance
> Abdel
> _______________________________________________
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--
David Arnett
Regents Professor
Steward Observatory
University of Arizona

Facts are stubborn, but statistics are more pliable.  Mark Twain
Facts do not cease to exist because they are ignored.  Aldous Huxley
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