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X-shooter GTO observations and chemical tagging of two main-sequence stars in the globular cluster NGC 2808

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


We observed two main sequence stars in the globular cluster NGC 2808, using X-shooter. We selected one of the targets on the blue main sequence (bMS) and one on the red main sequence (rMS) and measured abundances for several light elements that are expected to be different in stars of first and second generations in globular clusters. The differences between the bMS and the rMS stars amply exceed the errors and is in agreement with a difference in products of hydrogen burning at high...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Astronomische Nachrichten
DOI: 10.1002/asna.201111529


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