216, Astronomical Data Analysis Software and Systems IX, eds. We present DIRT , a Java applet geared toward modeling a variety of processes in envelopes of young and evolved stars.
Users can automatically and efficiently search grids of pre-calculated models to fit their data.
A large set of physical parameters and dust types are included in the model database, which contains over 500,000 models. The computing cluster for the database is described in the accompanying paper by Teuben et al. For any given model, auxiliary plots such as dust grain properties, radial intensity profiles, and the flux as a function of wavelength and beamsize can be viewed. The Model Server 1.1 . The database is kept on disk in a directory structure that uniquely specifies each model parameter.