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X-shooter observations of main-sequence stars in the globular cluster NGC 2808: First chemical tagging of a He-normal and a He-rich dwarf

Bragaglia, Angela; Carretta, Eugenio; Gratton, Raffaele G.; Lucatello, Sara; Milone, Antonino; Piotto, G; D'Orazi, Valentina; Cassisi, S; Sneden, Chris; Bedin, L R

Description

We present the first chemical composition study of two unevolved stars in the globular cluster NGC 2808, obtained with the X-shooter spectrograph at VLT. NGC 2808 shows three discrete, well-separated main sequences. The most accepted explanation for this

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
URI: http://hdl.handle.net/1885/79582
Source: Astrophysical Journal Letters
DOI: 10.1088/2041-8205/720/1/L41

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