What is it?

GOSSIP is a tool created to fit the electro-magnetic emission of an object (the SED, Spectral Energy Distribution) against synthetic models, to find the simulated one that best reproduces the observed data. It has been developed to perform this task in a simple, user friendly and efficient way.

What does it do?

GOSSIP automatically builds-up the observed SED of an object (or a large sample of objects) combining magnitudes in different bands and eventually a spectrum; then it performs a chi-square minimization fitting procedure versus a set of synthetic models. The fitting results are used to estimate a number of physical parameters like the Star Formation History, absolute magnitudes, stellar mass and their Probability Distribution Functions.