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Gaia

Cacciari, C.; Pancino, E.; Bellazzini, M.

A review of the Gaia mission and its science performance after one year of operations will be presented, and the contribution to reconstructing the history of the Milky Way will be outlined.

Gaia benchmark stars and their twins in the Gaia-ESO Survey

Jofré, P.

The Gaia benchmark stars are stars with very precise stellar parameters that cover a wide range in the HR diagram at various metallicities. They are meant to be good representative of typical FGK stars in the Milky Way. Currently, they are used by several spectroscopic surveys to validate and calibrate the methods that analyse the data. I review o…