Muestra métricas de impacto externas asociadas a la publicación. Para mayor detalle:
| Indexado |
|
||
| DOI | 10.1086/588816 | ||
| Año | 2008 | ||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Fluorine (F-19) abundances are derived in a sample of six bulge red giants in Baade's window. These giants span a factor of 10 in metallicity, and this is the first study to define the behavior of F-19 with metallicity in the bulge. The bulge results show an increase in F/O with increasing oxygen. This trend overlaps what is found in the disk at comparable metallicities, with the most oxygen-rich bulge target extending the disk trend. The increase in F/O in the disk arises from F-19 synthesis in both asymptotic giant branch (AGB) stars and metal-rich Wolf-Rayet (WR) stars through stellar winds. The lack of an s-process enhancement in the most fluorine-rich bulge giant in this study suggests that WR stars represented a larger contribution than did AGB stars to F-19 production in the bulge, when compared to the disk. If this result for fluorine is combined with the previously published overall decline in the O/Mg abundance ratios in metal-rich bulge stars, it suggests that WR winds played a role in shaping chemical evolution in the bulge. One star in this study exhibits a very low value of F/O while having a large O abundance; this chemical mixture can be understood if this star formed from gas that was enriched by metal-poor core-collapse supernovae, and it may indicate that chemical evolution in the bulge was inhomogeneous.
| Revista | ISSN |
|---|---|
| Current Developments In Biotechnology And Bioengineering: Food And Beverages Industry | 9780-4-44-63666-9 |
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Cunha, K. | Mujer |
Natl Opt Astron Observ - Chile
|
| 2 | Smith, Verne V. | Hombre |
Natl Opt Astron Observ - Chile
|
| 3 | Gibson, Brad K. | Hombre |
Univ Cent Lancashire - Reino Unido
|