Oxygen and Carbon abundances in blue straggler stars

Oxygen abundance as a function of Carbon abundance (both with respect to Iron and in a logarithmic scale) for the Blue straggler stars observed in the globular cluster 47 Tuc. Normal Blue straggler stars are marked with empty circles, while the 6 Carbon and Oxygen-deplete Blue Straggler stars are marked with red squares. Their names are also indicated. The yellow region correspond to the location of other stars in 47 Tuc previously studied



About the Image

Release date:2 October 2006
Related releases:eso0637
Size:2055 x 1172 px

About the Object

Name:47 Tucanae
Type:Milky Way : Star : Grouping : Cluster : Globular
Distance:15000 light years
Category:Star Clusters

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