[Mesa-users] MESA summer school assignments

Thu Jun 28 10:07:08 EDT 2018

Hi Thomas,
Please include the mesa-users list in your replies, as this conversation can be useful to other MESA users.
In terms of familiarizing with the structure of the run_star_extras.f workflow, the MESA website and Josiah’s tutorials are a good starting point. I strongly suggest these are your first steps.

>  http://mesa.sourceforge.net/run_star_extras.html <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmesa.sourceforge.net%2Frun_star_extras.html&data=02%7C01%7Cthomas.gehrman%40mnsu.edu%7Cfbdca40dfb9b43c9ecef08d5dc78caae%7C0c0d13782eaf49c7afa98b40189a1b5c%7C0%7C1%7C636657333711966983&sdata=tC%2BFqsBXBKCsD8AKNKb5czw8ykpPhwCLhcISEe313%2FU%3D&reserved=0>
>  https://jschwab.github.io/mesa-2017/#orgfc5b973 <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fjschwab.github.io%2Fmesa-2017%2F%23orgfc5b973&data=02%7C01%7Cthomas.gehrman%40mnsu.edu%7Cfbdca40dfb9b43c9ecef08d5dc78caae%7C0c0d13782eaf49c7afa98b40189a1b5c%7C0%7C1%7C636657333711966983&sdata=O57v7rJhzJ7ApZ7yjofmX2v0Tu3lwBz00BxLPEFTEYM%3D&reserved=0>

Once you have gone through that, you should be able to understand, modify and compile your run_star_extras.f

- Concerning a specific example of a run_star_extras.f that makes use of the other_am_mixing hook, I suggest you also look at Pascale Garaud’s lecture and labs on stellar mixing 
( http://cococubed.asu.edu/mesa_market/ewExternalFiles/2014_garaud.zip <http://cococubed.asu.edu/mesa_market/ewExternalFiles/2014_garaud.zip> ) The second lab in particular deals with angular momentum transport. After this you should be able to easily complete the magnetic breakdown exercise, at least a simple implementation of it.

- Concerning binary star modeling, Selma de Mink and Pablo Marchant lectures and labs will get you started with running binary stars with MESA. But only do this once you have figure out all the above for single stars 
( http://cococubed.asu.edu/mesa_market/ewExternalFiles/2017_marchant.zip <http://cococubed.asu.edu/mesa_market/ewExternalFiles/2017_marchant.zip> , http://cococubed.asu.edu/mesa_market/ewExternalFiles/2017_demink.zip <http://cococubed.asu.edu/mesa_market/ewExternalFiles/2017_demink.zip> )

Cheers,

-M

> On Jun 27, 2018, at 7:25 PM, Gehrman, Thomas Charles <thomas.gehrman at mnsu.edu> wrote:
> 
> Hello,
> 
> Thank you Dr. Cantiello for the links. I did look at the one on MESA's cite, but didn't have the lecture on 2017 for run_star_extras. Sorry about the vague question it was hard to put it into words. Your lab assignment on magnetic breaking is one part of what I want to do for my master's thesis. I was trying to go through the first part of the assignment by adding the angular momentum diffusion coefficient, but I can't figure out Bill Paxton's instructions in the other_am_mixing.f90 file. I've been looking on the MESA website and in a Fortran 90/95 book I found to figure out how to modify the run_star_extras to add the one coefficient. I will have to eventually will have to learn how to modify the run_star_extras for a binary star model, because that's where my thesis will be focused on. 
> 
> Thank you again,
> 
> Thomas
> From: Matteo Cantiello <cantiel at kitp.ucsb.edu>
> Sent: Wednesday, June 27, 2018 4:55:56 PM
> To: Gehrman, Thomas Charles
> Cc: mesa-users at lists.mesastar.org
> Subject: Re: [Mesa-users] MESA summer school assignments
>  
> Hi Gehrman,
> Not sure exactly  what you’re asking. 
> Have you looked at the tutorials on how to extend mesa using run_star_extras.f first?
> e.g.:  http://mesa.sourceforge.net/run_star_extras.html <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmesa.sourceforge.net%2Frun_star_extras.html&data=02%7C01%7Cthomas.gehrman%40mnsu.edu%7Cfbdca40dfb9b43c9ecef08d5dc78caae%7C0c0d13782eaf49c7afa98b40189a1b5c%7C0%7C1%7C636657333711966983&sdata=tC%2BFqsBXBKCsD8AKNKb5czw8ykpPhwCLhcISEe313%2FU%3D&reserved=0>
>          https://jschwab.github.io/mesa-2017/#orgfc5b973 <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fjschwab.github.io%2Fmesa-2017%2F%23orgfc5b973&data=02%7C01%7Cthomas.gehrman%40mnsu.edu%7Cfbdca40dfb9b43c9ecef08d5dc78caae%7C0c0d13782eaf49c7afa98b40189a1b5c%7C0%7C1%7C636657333711966983&sdata=O57v7rJhzJ7ApZ7yjofmX2v0Tu3lwBz00BxLPEFTEYM%3D&reserved=0>
> 
> Some of the lecturers to most recent summer schools, also included working run_star_extras.f as a solution to their summer school exercises, 
> which is be a good way to start in order to familiarize with Fortran 90 and how to modify run_star_extras.f
> http://cococubed.asu.edu/mesa_market/education.html <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fcococubed.asu.edu%2Fmesa_market%2Feducation.html&data=02%7C01%7Cthomas.gehrman%40mnsu.edu%7Cfbdca40dfb9b43c9ecef08d5dc78caae%7C0c0d13782eaf49c7afa98b40189a1b5c%7C0%7C1%7C636657333711966983&sdata=o4jIk%2B%2Bo7tBDXjKe595HFbBSELTs17AY6%2BUg24z5yRQ%3D&reserved=0> 
>   
> Cheers,
> 
> -M
> 
> -- 
> Matteo Cantiello - http://matteocantiello.com/ <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmatteocantiello.com%2F&data=02%7C01%7Cthomas.gehrman%40mnsu.edu%7Cfbdca40dfb9b43c9ecef08d5dc78caae%7C0c0d13782eaf49c7afa98b40189a1b5c%7C0%7C1%7C636657333711966983&sdata=iJDfEjtBGNqK2ArW0GdlLt2d2fRxNXlAAFL2vZPQGfs%3D&reserved=0>
> Associate Research Scientist,  CCA, Flatiron Institute
> Visiting Associate Researcher, Princeton University
> Chief Scientific Officer and Board Member, Authorea
> 
> 
>> On Jun 27, 2018, at 5:44 PM, Gehrman, Thomas Charles <thomas.gehrman at mnsu.edu <mailto:thomas.gehrman at mnsu.edu>> wrote:
>> 
>> 
>> 
>> Hello all,
>> 
>> I'm still fairly new to mesa. I am currently going through all the MESA summer school assignments starting from 2012. I'm on the 2012 cantiello assignment 2. I am unsure as to where I should put/modify these arguments?
>> 
>> s% other_am_mixing => my_am_mixing_routine                           rename to  null_other_am_mixing ?
>> 
>> nu_additional = 3d4 ! cm^2/s
>> forall (k=1:s% nz) s% am_nu(k) = s% am_nu(k) + nu_additional
>> 
>> I'm thinking the nu_additional = 3d4 goes into my inlist_15M_dynamo and the rest is written into the run_star_extras.f for the 15M_dynamo test suite I'm using. I'm new to Fortran 90, so I'm not entirely sure how the forall argument is written in the other_am_mixing.f90 subroutine  .
>> 
>> Mesa version 10398
>> Ubuntu 16.04 LTS
>> MESA SDK version 20180127 64-bit Linux
>> 
>> Thank you,
>> 
>> Thomas
>> 
>> Thomas C. Gehrman Jr.
>> M.S. Physics & Graduate Teaching Assistant
>> Department of Physics and Astronomy
>> Minnesota State University, Mankato
>> Office: N144
>> 
>> 
>> <inlist_15M_dynamo><run_star_extras.f><other_am_mixing.f90>_______________________________________________
>> mesa-users at lists.mesastar.org <mailto:mesa-users at lists.mesastar.org>
>> https://lists.mesastar.org/mailman/listinfo/mesa-users <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.mesastar.org%2Fmailman%2Flistinfo%2Fmesa-users&data=02%7C01%7Cthomas.gehrman%40mnsu.edu%7Cfbdca40dfb9b43c9ecef08d5dc78caae%7C0c0d13782eaf49c7afa98b40189a1b5c%7C0%7C1%7C636657333711966983&sdata=FqCJYQPNxkS12%2FeTlGJgqYcLhdcREUoQQs8ZPY%2Fdhn4%3D&reserved=0>
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