The LINEDB catalog format is a more flexible facility, which can al-
so holds additional information. On-line spectral databases (JPL and
CDMS) are directly useable as LINEDB catalogs, although access can be
long in this case.
Scripts named gag_data:*-linedb.sic are availables as examples to con-
struct local data bases from the on-line ones. Beware that the on-line
databases sometimes change their naming conventions, so that identifying
a given species by name can be tricky.
In 2020, access to CDMS was unreliable. It has improved since. Access
to JPL is operational, but frequencies are not as up-to-date as in CDMS.
Local files in the JPL ".cat" format can be used, but as of Jan-2020,
the Einstein coefficients are wrong. They also require a "partfunc.cat"
in the following format (given here for HN-15-C as an example)
species HN-15-C 28006
temperatures 300. 225. 150. 75. 37.5 18.75 9.375
qpart 141.06 105.9 70.797 35.514 17.23 9.135 4.746
The tag number (28006 here) must match that of the ".cat" file.
Gildas manager
2023-06-01