Chemo kinematic constraints on Milky Way models from the spectroscopic surveys SEGUE & RAVE The Milky Way is only one out of billions of galaxies in the universe. However it is a special galaxy because it allows to explore the main mechanisms involved in its evolution and formation history by unpicking the system star by star. Especially the chemical fingerprints of its stars provide clues and evidence of past events in the Galaxy’s lifetime. These information help not only to decipher the current structure and building blocks of the Milky Way but to learn more about the general formation process of galaxies. In the past decade a multitude of stellar spectroscopic Galactic surveys have scanned millions of stars far beyond the rim of the solar neighbourhood. The obtained spectroscopic information provide unprecedented insights to the chemo dynamics of the Milky Way. In addition analytic models and numerical simulations of the Milky Way provide necessary descriptions and predictions suited for comparison with observations in order to decode the physical properties that underlie the complex system of the Galaxy. In…