The Data Processing and Analysis Consortium (DPAC) is responsible for the data handling from the mission. DPAC is divided into nine subgroups, called coordinating units, each of which is responsible for a different aspect of the Gaia data processing.
The MPIA hosts one of two Gaia teams in Heidelberg (the other is at ARI), funded primarily by the German space agency, the DLR. This team plays a leading role in CU8 "Astrophysical Parameters", by developing algorithms to classify and interpret the Gaia data. We are building the Gaia classification machine - the "Discrete Source Classifier (DSC)" - a probabilistic classifier to identify all Gaia sources. We also provide the algorithm for inferring the physical parameters for single stars (called "GSP-Phot") and for binary stars (called "MSC") using the BP/RP spectra and parallaxes. The group additionally maintains the CU8 data model and contributes to another coordination unit, CU9. In parallel to Gaia we are involved in related projects involving the application of statistical data analysis methods to large data sets.