Metal Rich Stars in omega Centauri
| dc.creator | Pancino, E. | |
| dc.date | 2003-05-23 | |
| dc.date.accessioned | 2026-07-07T02:08:35Z | |
| dc.date.available | 2026-07-07T02:08:35Z | |
| dc.description | I present some preliminary results from a high-resolution spectroscopic observing campaign conducted with UVES at the ESO VLT, devoted to the study of the newly discovered, metal-rich red giant branch (RGB-a) in omega Centauri. In particular, I derive and discuss accurate abundances of iron-peak elements, alpha-elements and s-process elements. The main results discussed in this contribution are: (i) the RGB-a is the most metal-rich component of the RGB stellar mix in omega Cen, with [Fe/H]=-0.62+/-0.06; (ii) the RGB-a has a lower alpha-enhancement compared to the other red giants, possibly due to SNe type Ia pollution and (iii) the s-process elements overabundance of the RGB-a is similar to that of the other red giants in omega Cen, and unusually high for globular cluster stars, due to pollution by low mass AGB stars. | |
| dc.description | 11 pages, 5 figures, contributed talk at the 4th Carnegie Symposium "Origin and Evolution of the Elements" | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0305449 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0305449 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/6104 | |
| dc.subject | Astrophysics | |
| dc.title | Metal Rich Stars in omega Centauri | |
| dc.type | text |