Studying the Milky Way

The Milky Way is the prototype disk galaxy.  It is unique in allowing a close study of the physical processes involved in its formation and evolution. Detailed physical parameters can be derived from observations of individual Solar-type stars from throughout its history. Several studies of such stars during past decades will be summarised, focused on disk and extreme halo stars. Most recently, we have addressed the mechanisms for enrichment of the early halo in chemical elements of several types, combining high-resolution spectra from the ESO VLT and the Nordic Optical Telescope (NOT).  Another current topic that will be reviewed is the possible traces of past minor mergers in nearby stars, using NOT spectra and data from ESA’s astrometric space mission Gaia.

Birgitta Nordström and Johannes Andersen
1st meeting room, KIAA
Mon, 2017-04-17 12:00 to 13:00