AN ABUNDANCE ANALYSIS OF BRIGHT GIANTS IN THE GLOBULAR CLUSTER NGC 1851
作者： David Yong , Frank Grundahl
DOI: 10.1086/525850
关键词: Physics 、 Astrophysics 、 Star cluster 、 Globular cluster 、 Subgiant 、 Bright giant 、 Abundance (ecology) 、 Astronomy 、 Cluster (physics)
摘要: We present the chemical compositions for eight bright giants in globular cluster NGC 1851. Our analysis reveals large star-to-star abundance variations and correlations of light elements O, Na, Al, a feature found every well-studied cluster. However, 1851 also exhibits s-process Zr La. These are correlated with Al anticorrelated O. Furthermore, La abundances appear to around two distinct values. A recent study revealed double subgiant branch data reinforce notion that there stellar populations indicate this has experienced complicated formation history similarities ? Centauri.
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