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Measuring galactic chemical abundance trends in open and globular clusters using SDSS/APOGEE
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2022-12-12
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Star clusters are key tracers for chemical and dynamical evolution in the Milky Way. As such, constructing and analyzing a large, comprehensive, uniform dataset of clusters can provide needed constraints for Galactic dynamic and chemical evolution parameters. The Open Cluster Chemical Abundance and Mapping (OCCAM) survey aims to do just that. This latest contribution to the OCCAM survey presents the analysis of SDSS/APOGEE Data Release 17 (DR17), where we find a sample of 150 open clusters, 94 of which are designated as high-quality. We find the APOGEE DR17-derived [Fe/H] values to be in good agreement with those from previous studies, and by using a subset of the high-quality sample, the Galactic abundance gradients were measured for 15 other elements. In addition to the open cluster sample, we also use the OCCAM pipeline to define membership probabilities for 72 globular clusters to explore their properties in a homogeneous sample.
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Physics and Astronomy