Links / Gaia related
The Gaia homepage at ESA
"...The site contains information and resources for individuals working closely with the Gaia project. The site is a tool for information flow between these people, and provides access to material that they require in order to keep up-to-date with developments in the project..."

Variable Star Working Group
This is a closely related working group. The objectives include: the estimation of the total number of variable objects detected by Gaia, the algorithm for variable object detection, the algorithm for variable object classification.

Classification Working Group (ICAP)
The goal of this working group is to develop the necessary methods to classify all of the objects observed and to determine meaningful astrophysical parameters (such as stellar effective temperatures, compositions, radii and so forth). This will make use not only of the multiband photometry, but also the parallaxes, the proper motions (e.g. for QSO detection), the radial velocity spectrum (yielding much additional information on bright targets) and variability data.