Nitrogen Abundances in Giant Stars of the Globular Cluster NGC 6752

Yong, David; Grundahl, Frank; Johnson, Jennifer A; Asplund, Martin

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Nitrogen Abundances in Giant Stars of the Globular Cluster NGC 6752

Date

2008

Authors

Yong, David

Grundahl, Frank

Johnson, Jennifer A

Asplund, Martin

Publisher

IOP Publishing

Abstract

We present N abundances for 21 bright giants in the globular cluster NGC 6752 based on high-resolution UVES spectra of the 3360 ÅNH lines. We confirm that the Strömgren c1 index traces the N abundance and find that the star-to-star N abundance variation