Subject:
new opacity files
From:
Maurice Leutenegger <Maurice.A.Leutenegger@nasa.gov>
Date:
Thu, 05 Feb 2009 18:30:10 -0500
To:
David Cohen <cohen@hven.astro.swarthmore.edu>, Erin Martell <emartel1@swarthmore.edu>, Emma Wollman <ewollma1@swarthmore.edu>

Hi all,

here are new opacity files. Actually, the opacities are not too new, except for the 2/3 solar metallicity model. But they are packaged as FITS files, which may be more convenient to use; if not, it's easy to get text back out of them.

The files are:

ZetaPup_Feb_2009_1.7e-6.fits      ---------------   Janos' most recent model, including all radii; not suitable for windtabs, just more convenient than ascii.
ZetaPup_Feb_2009_1.7e-6_R1.82.fits  ---------   Same model, with R = 1.82 R_* opacity extracted. Can be used in windtabs.
kappa.66.fits   -----------------------------------------   2/3 solar metallicity
kappa1.0.fits   -----------------------------------------   solar metallicity; these last two use AGS2005 abundances, and the same fictional ion balance as before.

I will send the files out in a second email, since the tar file is ~ 2 MB; you can get the file and then delete that mail.

I will also send a file called 'tau_transmission.fits' for use with windtabs. None of the ascii text files are used anymore.

Tonight I will update windtabs on sourceforge. Here are the instructions to update local models and start using windtabs:

1. Get the code:

svn co https://windprofile.svn.sourceforge.net/svnroot/windprofile/trunk/

2. Edit the lmodel.dat entry for windtabs to specify the directory where you will keep the data files for windtabs. The lmodel.dat file that comes with windprofile should already have a sample entry from my installation. The directory must be specified at the end of the first line of the model description.

3. There must be two specific files in this directory: tau_transmission.fits, and kappa.fits.  kappa.fits may be any of the three files I sent, or more generally any fits file with wavelength and opacity as the first two columns of the first extension.  However, you must rename the opacity file to be specifically kappa.fits, unless you want to edit the C++ source code.

If you want to change between opacity files frequently without recompiling local models, you have two options: a., you can rename a different opacity file to be kappa.fits every time you want to switch, or b., you can keep each opacity file in a different directory (along with a copy of tau_transmission.fits), and then alter lmodel.dat to point to the correct directory whenever you want to change.

4. Then you can proceed as usual: initpackage localmodels lmodel.dat (localmodels directory);   lmod localmodels (localmodels directory)

Let me know if you have any questions.

Maurice