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Characterizing the heavy elements in globular cluster M22 and an empirical s-process abundance distribution derived from the two stellar groups

Roederer, I U; Marino, Anna; Sneden, Chris

Description

We present an empirical s-process abundance distribution derived with explicit knowledge of the r-process component in the low-metallicity globular cluster M22. We have obtained high-resolution, high signal-to-noise spectra for six red giants in M22 using the Magellan Inamori Kyocera Echelle spectrograph on the Magellan-Clay Telescope at Las Campanas Observatory. In each star we derive abundances for 44 species of 40 elements, including 24 elements heavier than zinc (Z = 30) produced by...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
URI: http://hdl.handle.net/1885/78928
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/742/1/37

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