The allowed mass range is between 0.1 M_☉ and 15.0 M_☉. Masses not in the original grids will be calculated by interpolation. To download single track of a given mass, select the grid, metallicity and select the mass from the options or just type the required mass in solar units. In case of multiple mass requests, type Mass1--Mass2, step all in solar units. For example, typing 0.9--1.4, 0.05 will produce as output 11 tracks with masses equal to 0.90, 0.95... 1.35, 1.40 M_☉. The minimum allowed mass step is 0.0001 M_☉

 

For reasons of computational time, the maximum number of tracks downloadable in one go is 60. If a photometric system is not selected, the HR-diagram is provided by default. Interpolation in metallicity is available for Z and [Fe/H] with the following condition:

If a pre-calculated metallicity is selected, interpolated metallicity values are ignored.

If two interpolated values are introduced (Z and [Fe/H]), only Z is calculated.

If a mass is not given for the metallicity interpolation, the file will include all masses.

If a metallicity is not selected, all metallicities for the selected photometric system will be downloaded.

Pre-computed tracks for available photometric systems can be downloaded after the selection of Heavy element mixture, Available grids, and metallicity. In this cases, all masses are included in the file.