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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Bibliographic Details

Published in:	The Astrophysical Journal
Main Authors:	Andrew C. Nine, Robert D. Mathieu, Simon C. Schuler, Katelyn E. Milliman
Format:	Article
Language:	English
Published:	IOP Publishing 2024-01-01
Subjects:	Binary stars Spectroscopic binary stars Stellar abundances Open star clusters
Online Access:	https://doi.org/10.3847/1538-4357/ad534b