Output of read_masterlist is not consistent with database directory structure

[will.t...@gmail.com]

Hi all,

When using the `read_masterlist` function (which just reads the file masterlist/masterlist.ion), I find that the list of ions returned is not consistent with the directory structure of the database itself. In particular, several ions seem to be missing from the masterlist that have directories within the database, including Ca III, Ca IV, and Fe I, among others.

Is there a reason particular ions are excluded from this list or is the list just out of date? I cannot find any documentation that indicates the former.

Thanks!

Will

[Young, Peter R. (GSFC-6710)]

Hi Will,

 

Thanks for your question. The masterlist contains ions that have the wgfa, scups and elvlc file and so yield emission lines. For computing the ionization balance we store recombination and ionization rates for each ion, including those ions that are missing in the regular database.

 

So, in the case of ca_3, for example, you’ll see diparams, drparams, easplom, easplups and rrparams files that are for ionization and recombination rates. You don’t see wgfa, scups and elvlc files, though, hence this ion isn’t in the masterlist.

 

Thanks, Peter

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