Elemental abundances in AGB stars and the formation of the Galactic bulge
Stefan Uttenthaler (1), Joris A.D.L. Blommaert (2), Thomas Lebzelter, (1), Nils Ryde (3), Peter R. Wood (4), Mathias Schultheis (5), Bernhard, Aringer (6) ((1) University of Vienna, Department of Astronomy, Austria (2), Instituut voor Sterrenkunde, KU Leuven
TL;DR
This study analyzes high-resolution near-IR spectra of 45 AGB stars in the Galactic bulge to determine elemental abundances, aiming to understand the bulge's formation history and dust composition in stellar winds.
Contribution
It provides new elemental abundance measurements for AGB stars in the Galactic bulge, linking stellar chemistry to galactic evolution and dust formation.
Findings
Initial elemental abundance patterns identified.
Potential correlations between photospheric composition and dust species.
Progress towards constraining bulge formation history.
Abstract
We obtained high-resolution near-IR spectra of 45 AGB stars located in the Galactic bulge. The aim of the project is to determine key elemental abundances in these stars to help constrain the formation history of the bulge. A further aim is to link the photospheric abundances to the dust species found in the winds of the stars. Here we present a progress report of the analysis of the spectra.
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