Abstract
We discuss how abundance ratios can help unravel the evolutionary history of the Galactic bulge. An LTE abundance analysis of a solar-[Fe/H] bulge red giant star reveals that the α-elements O, Mg, Si, Ca and Ti are enhanced by +0.3 dex, the rprocess element Eu is enhanced by +0.5 dex and the Ba/Eu ratio is -0.5. These ratios are characteristic of normal halo composition, and suggest that the bulge reached solar [Fe/H] in less than 1 Gyr.
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McWilliam, A., Rich, R.M. (1999). Abundance Ratios in Galactic Bulge Stars. In: Walsh, J.R., Rosa, M.R. (eds) Chemical Evolution from Zero to High Redshift. ESO Astrophysics Symposia. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-48360-1_20
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DOI: https://doi.org/10.1007/978-3-540-48360-1_20
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