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WIYN Open Cluster Study. XC. Barium Surface Abundances of Blue Straggler Stars in the Open Clusters NGC 7789 and M67

We investigate barium (Ba) abundances in blue straggler stars (BSSs) in two open clusters, NGC 7789 (1.6 Gyr) and M67 (4 Gyr), as signatures of asymptotic-giant-branch (AGB) mass transfer. We combine our findings with previous Ba abundance analyses of NGC 6819 (2.5 Gyr) and NGC 188 (7 Gyr). Out of 3...

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Principais autores: Andrew C. Nine, Robert D. Mathieu, Simon C. Schuler, Katelyn E. Milliman
Format: Artigo
Sprog:Inglês
Udgivet: IOP Publishing 2024-01-01
Serier:The Astrophysical Journal
Fag:
Binary stars
Spectroscopic binary stars
Stellar abundances
Open star clusters
Online adgang:https://doi.org/10.3847/1538-4357/ad534b
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