[mesa-users] EOS / Gamma_1 derivatives

[Bill Paxton]

On Nov 27, 2016, at 12:49 PM, Earl Bellinger wrote:

> In the specification of the FGONG file format [1, section 2.1.3],
> model variables 26-28 are to contain derivatives of \Gamma_1 with
> respect to density, pressure, and helium abundance, respectively;
> with, in each case, the other two unused variables being held
> constant.

Hi Earl,

Good to hear you are plugging away.  It seems you've turned up an error of omission in mesa's FGONG output.

You can see it in star/private/pulse_fgong.f90 in subroutine get_fgong_data.

The code carefully sets the variables as expected, but it jumps from 25 to 29 neatly skipping over the ones you want.

Then in subroutine write_fgong_data it writes out uninitialized values for those missing entries - hence the results you see.

Rich Townsend is the one for you to talk to about this to see if there is a simple fix.  

Good luck,
Bill


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