Skip navigation
Skip navigation

The double sub-giant branch of NGC 6656 (M 22): A chemical characterization

Asplund, Martin; Marino, Anna F; Milone, A. P.; Sneden, Chris; Bergemann, Maria; Kraft, R. P.; Wallerstein, G; Cassisi, S; Aparicio, Antonio; Hilker, M; Lind, Karin

Description

We present an abundance analysis of 101 subgiant branch (SGB) stars in the globular cluster M 22. Using low-resolution FLAMES/GIRAFFE spectra we have determined abundances of the neutron-capture strontium and barium and the light element carbon. With these data we explore relationships between the observed SGB photometric split in this cluster and two stellar groups characterized by different contents of iron, slow neutron-capture process (s-process) elements, and the α element calcium, which...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
URI: http://hdl.handle.net/1885/66268
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361/201118381

Download

File Description SizeFormat Image
01_Asplund_The_double_sub-giant_branch_of_2012.pdf2.66 MBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  20 July 2017/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator