The calculations in the Three Phase ISM tool are all performed by routines written in IDL (Interactive Data Language). The routines have been run and tested using Version 5.6, Solaris (sunos sparc m64).
The IDL procedures/functions used by the Three Phase ISM tool are the following:
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average_ratio.pro
Function to compute average ratio of the concentration of isotopes in the ISM model according to Clayton's model.
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metallicity_integrand.pro
Function to compute integrand for radioactive species' metallicity in Clayton's standard model. See eq. (4) in Clayton, Hartmann, and Leising (ApJL, 415, 25).
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phase.pro
Function to compute ratios of the concentration of isotopes in the three-phase ISM model compared to the average value.
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ratio_ism.pro
Function that computes the average ratio of two species in the three-phase ISM model and the relative concentration (by mass) of the two species in each of the three phases.
You may download these files in zipped or gzipped format. We distribute these routines under the GNU General Public License. Feel free to use or modify them according to your purposes; however, please keep the documentation header on the files.
