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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
Crédit:ESO
À propos de l'image
Identification: | eso0637a |
Type: | Graphique |
Date de publication: | 2 octobre 2006 |
Communiqués de presse en rapport: | eso0637 |
Taille: | 2055 x 1172 px |
À propos de l'objet
Nom: | 47 Tucanae |
Type: | Milky Way : Star : Grouping : Cluster : Globular |
Distance: | 15000 années lumière |
Catégorie: | Star Clusters |