ATLASRD - Reads in Kurucz model atmosphere fluxes

Syntax:

ATLASRD Teff LogG [MODE]

Description:

Reads in Kurucz model atmosphere fluxes, from the data base kept in the directory with environment variable SPECDAT. The data are stored in the database in the form of astrophysical fluxes; however, ATLASRD multiplies them up by a factor $\pi$ to produce `actual' fluxes. The x unit is Angstroms, and the y unit erg/cm2/s/A.

If MODE=0 (the default value) solar abundance models are acquired; otherwise the `low metal abundance' models (1/30 solar) are read in. A summary of the available solar abundance models can be obtained using ATLIST, and the models normalised to cursor-selectable X,Y values using ATNORM.

Other files in the SPECDAT database, including extended atmosphere and Non-LTE models (see $SPECDAT/info.lis for details), can be read in using SP2RD $SPECDAT/filename.typ. The KHMEXT, MLTE and MNLT models can all be ATNORMed if they are first subjected to TENY, but the normalisation constant will be meaningless.

If you cannot access the model atmospheres, it may be because you are not currently using NDF data format (see command USENDF). Most of the data in SPECDAT is only available in NDF format. Of course, your node may not have the SPECDAT database installed, in which case complain to your node manager.