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Ngc 5824: A luminous outer halo globular cluster with an intrinsic abundance spread

Da Costa, Gary; Held, E. V.; Saviane, Ivo

Description

We present a detailed study of the strengths of the calcium triplet absorption lines in the spectra of a large sample of red giant members of the luminous outer Galactic halo globular cluster NGC 5824. The spectra were obtained with the FORS2 and GMOS-S multi-object spectrographs at the VLT and the Gemini-S telescope, respectively. By comparing the line strengths of the NGC 5824 stars with those for red giants in clusters with well-established abundances, we conclude that there is an intrinsic...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
URI: http://hdl.handle.net/1885/69213
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stt2467

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