This package includes field variable and particle files from the three simulated molecular 
clouds that are discussed in Chira, Ibanez-Mejia, Mac Low, & Henning (Astron. 
Astrophys. 2019, 630, 97). The details of the simulations are described in 
Ibanez-Mejia, Mac Low, Klessen, & Baczynski (2017, Astrophys. J., 850, 62). The
files are output by simulations conducted using Flash with the implementation
described in the paper. The files are in the HDF5 format. All values are in
Gaussian cgs units.  The full data set is roughly 0.6 Tb in size

Contact the authors through Mordecai-Mark Mac Low (mordecai@amnh.org).

Note that due to technical problems we are able to offer the raw
data only for those simulations that resolve the local Jeans length with 4 cells.

The data are accessible on the FTP server of the American Museum of Natural
History, at the address:

ftp://ftp.amnh.org/pub/group/publish/mordecai/sd.astro.3 .

They can also be accessed at higher speed using Globus at the address:

https://app.globus.org/file-manager?origin_id=d8d218f0-e092-11ea-8bbc-029866a337f1&origin_path=%2Fftp%2Fdata%2Fpub%2Fgroup%2Fpublish%2Fmordecai%2Fsd.astro.3%2F

The package includes a series of routines that produce the plots published in 
Chira et al. (2019), as well as all intermediate products.
The source data are stored in the folder src_data/.  This folder contains both
the original simulation HDF5 files and the derived velocity structure functions.
The folder library/ includes the scripts that prepare the data, calculate the 
velocity structure functions and plot the results in the published versions. The 
plots are stored in the folder vsf_output/.

Most of the scripts use the Python packages numpy, matplotlib, astropy, glob 
and scipy. The script that extracts the required information from the simulation
files additionally uses the yt visualization package (Turk et al 2011; 
http://yt-project.org).
                                                          
In case the user encounters any technical problem when downloading the data
please contact the Library of the American Museum for Natural History (libref@amnh.org).