These routines provide fits to the CO spectral line energy distribution (SLED) based on the model published in Narayanan & Krumholz (2014). The routines are available in
To run the code, download the appropriate tarball, and unzip using tar -xf nk_cosled_XXX.tar. This will create a directory nk_fit_data, as well as a file nk_cosled.py or .pro. This file contains a routine that will read in the data in the nk_fit_data directory and produce a prediction of the CO SLED as a function of star formation rate surface density.