Some successful "correction factor" plots

Again, everything is being compared to Goldsmith/Bergin/Lis '97

so this is good!

 

figs 10 and 11 above.

A minimal pyradex example

I got the following code to produce the above plot (an intentional reproduction/bookmark against Goldsmith, Bergin, Lis 1997)

https://github.com/tomr-stargazer/nitrogen-accounting-plots/blob/7cb1f84f42c5173eb3ffa61a03e64b738e231cb1/pyradex_experiment.py

How to calculate optical depth from line ratios of molecule isotopologues

From Schwarz et al. (2016)  




further notes: there doesn't seem to be a closed-form solution for tau_13CO, so you gotta solve it numerically (using simple root-finding techniques).