A Tool for Astrophysical Data Analysis
What is TA-DA
TA-DA is a powerful, integrated tool for the analysis of stellar photometric data, aimed to significantly simplify the process of comparing calibrated astrophysical data with theoretical models.
In the released version TA-DA allows to easily and reliably operate on synthetic photometry, creating theoretical spectral energy distributions (SEDs). The tool also supports analysis of photometry from different archives, SED model fitting, self-consistent prediction of stellar parameters based on multi-band photometry.
TA-DA includes a comprehensive and updatable repository of throughputs of astronomical instruments and filters, stellar and synthetic spectra, and evolutionary models. Photometric and spectroscopic data can easily be imported from the Virtual Observatory as well as from user's own tables and models. Results are produced in tabular or graphic format, readily usable for publication.
TA-DA runs as an IDL widget application publicly available for download.
1. Computation synthetic photometry of complete grids of evolutionary models, or part of them, or any arbitrary set of stellar parameters. Observed fluxes or magnitudes and colors are computed in a number of units. Dust extinction can be considered in the computation.
2. The results are plotted for visual inspection, and can be saved to file.
3. Tables with observed photometry can be imported in the program. The individual entries in the imported table can be sorted and selected. The data can be plotted in comparison with the synthetic photometry previously computed.
4. A universal fitting algorithm is used to derive the best stellar parameters of individual sources, based on the their magnitudes or colors, and relevant photometric errors, in an arbitrary number of simultaneous bands (up to 16).
2012/10/11: TA-DA version 0.99 released - Fixed a bug causing TA-DA to crash during synthetic photometry for some configurations of parameters
2012/07/19: TA-DA version 0.98 released - Small bug fix when running the fitter multiple times (thanks to Giacomo Beccari for spotting it)
2012/07/11: TA-DA version 0.97 released - Right-clicking on the plot window now shows the model parameters in that point. - Synthetic photometry faster in some cases.
2012/07/05: TA-DA version 0.96 released - Improvements in the fitter engine - Improvements in the interpolation of evolutionary models. - Fixed a bug causing TA-DA to crash if the plot window was re-drawn too many times.
2012/06/28: TA-DA version 0.911 released - Small bug fixed
2012/06/27: TA-DA version 0.91 released - Added functionality to include custom label on plots - Added Marigo-Girardi and Pisa isochrones; added Kurucz atmospheres.