Manuela Zoccali

ESO-Garching

Poster Title: Chemical Abundances in the Galactic Bulge

Abstract: We present a programme aimed to obtain high resolution spectra for ~800 bulge stars with GIRAFFE and 56 bulge stars with UVES, using the FLAMES facility on UT2. The data for the first half of the target stars have been collected during last August. This database will allow us to reach the following scientific results: 1) Determine the metallicity distribution of the Galactic bulge for a sample of unprecedented size, 2) Set the bulge field and globular cluster metallicities on the same scale, 3) Determine the detailed distribution of elemental ratios as a function of metallicity, hence getting insight into the timescale of bulge formation, 4) Check whether individual families can be recognized in the bulge, characterized by special values of the elemental ratios, suggestive of a bulge formation by assembly of sub-units, 5) Detect (or set limits to the number of) disk stars with solar abundance ratios that might have been diverted into the bulge by the bar, and 6) Establish whether radial gradients exist in any of the measured quantities.



Link to poster: N/A