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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
Kilde:ESO
Om billedet
Id: | eso0637a |
Type: | Diagram |
Udgivelsesdato: | 2. oktober 2006 |
Relaterede pressemeddelelser: | eso0637 |
Størrelse: | 2055 x 1172 px |
Om objektet
Navn: | 47 Tucanae |
Type: | Milky Way : Star : Grouping : Cluster : Globular |
Afstand: | 15000 lysår |
Kategori: | Star Clusters |