... ------------------------------------------------ 046 Czech Rep., 0.57 16 x 10' 1.3 1 5 0.083 0.034 Klet 3.0 USNO 106 Slovenia, 0.36 36 x 36' 2.0 80 332 0.371 0.333 Crni vrh 2.4 USNO 114 87 608 0.344 0.298 118 Slovakia, 0.57 14 x 10' 1.7 3 18 0.065 0.155 Modra 3.3 USNO 157 Italy, 0.20 18 x 12' 1.4 6 28 0.196 0.175 Frasso Sabino 1.3 USNO 160 Italy, Castel- ... USA 0.9 UCAC I26 Obs., ... USA 6.1 USNO G69 Thousand 0.30 25 x 25' 1.8” 6 63 0.271 0.423 Oaks, U.S.A. 2.9 UCAC G92 Jarnac Obs...

Rep ort by the ESA-ESO Working Group on Galactic p opulations, chemistry and dynamics Abstract Between the early 40s, when Baade showed the first evidence for the existence of two distinct stellar populations, and today, with our Galaxy surprising us with new substructures discovered almost on a monthly basis, it is clear that a remarkable progress has been achieved in our understanding of the Galaxy, of its structure and stellar populations, and of its chemical and dynamical signatures. Yet, some questions