I need some guidance to understand and properly use MESA.
My ultimate goal is to modify it such that I can use a variable G.
I saw a video using it to predict the evolution of a main-sequence star. I don't quite understand how it is used to predict observations (Stellar Population).
I am familiar with the Kennicutt-Schmidt Law, relating the rate of galaxy formation and gas surface density
https://en.wikipedia.org/wiki/Kennicutt%E2%80%93Schmidt_law
The Tolman surface brightness test (surface brightness versus z), might be used together with wavelength information to determine star population as a function of z.
Then there is the initial mass function
It is not clear how this initial mass function would be changed in an epoch-dependent G.
IN SUMMARY
This is a very early stage of exploration of the issue of Stellar Population Modeling, Star Evolution under MESA.
Advice and comments are welcomed.
No I'm not familiar with MESA app. What does it do and how does it operate?
This is the site for one of the mesa applications
https://github.com/MESAHub/mesa/tree/main
There are at least three sites
I am not an expert. That is the reason I asked the question. I am looking for people that know it to ask my questions...:)
I know that the program propagates star evolution from their mass and composition.
So, they have at least one module to calculate star evolution.
I found a list where you can ask questions. They are all in gitub. Go there as search mesa... The programs have discussion sections. Join their discussion sections and ask questions.
Or wait until a nice astrophysicist shows up and ask some of my silly questions.
My problem with MESA are:
a) I didn't know the existence of three mesa programs. I knew about the modules program and the SDK. There is at least one more related to Graphics. I tried to install the graphics program and after doing so, I had to reinstall my OS. Installing the requirements screw up my nvidia driver choices or something.
b) Now with the OS recovered, following the installation procedure doesn't lead to a working program. So, there is where I am - with the benefit that now I know about the MESA list-server and will be asking for help soon.
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