Unveiling the inner Galaxy stellar populations and their relation with local samples

 

 

 

 

The inner Galaxy is a challenging region to observe and characterize. The main obstacles in this region are the high extinction, distances determination, and stellar populations' superposition. With the help of the APOGEE survey and Gaia EDR3 in Queiroz et 2020b, we review the dependency of metallicity and alpha-elements with orbital parameters and velocities for an unprecedented coverage and precise sample of stars in the inner Galaxy. The broad set of information from APOGEE and Gaia enables us to disentangle the multi-populations that inhabit the inner Galaxy. We use statistical techniques to visualize high dimensional data to separate the populations identified in Queiroz et al. 2020b and further compare with local samples to understand their contribution to the inner Galaxy and vice-versa.