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Table · dataset · 2015

Abundances of red giant stars in NGC6093 (M80)

Listed in IVOA Registry (Virtual Observatory)

Homogeneous abundances of light elements, alpha-elements, and Fe-group elements from high-resolution FLAMES spectra are presented for 82 red giant stars in NGC 6093 (M 80), a dense, metal-poor globular cluster (GC).

Description

M 80 shows star to star variations in proton-capture elements, and the extension of the Na-O anticorrelation perfectly fit the relations with (i) total cluster mass, (ii) horizontal branch morphology, and (iii) cluster concentration previously found by our group.

The chemistry of multiple stellar populations in M 80 does not look extreme. The cluster is also a typical representative of halo globular clusters for what concerns the pattern of alpha-capture and Fe-group elements. However we found that a significant contribution from the s-process is required to account for the distribution of neutron-capture elements.

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Astronomical sciences 73%
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