| Texto completo | |
| Autor(es): |
Barbuy, Beatriz
;
Trevisan, M.
;
Gustafsson, B.
;
Eriksson, K.
;
Grenon, M.
;
Pompeia, L.
;
Charbonnel, C
;
Tosi, M
;
Primas, F
;
Chiappini, C
Número total de Autores: 10
|
| Tipo de documento: | Artigo Científico |
| Fonte: | COSMIC MAGNETIC FIELDS: FROM PLANETS, TO STARS AND GALAXIES; v. N/A, n. 268, p. 2-pg., 2010-01-01. |
| Resumo | |
We analyze a sample of 21 super-metal-rich (SMR) stars, using high-resolution echelle spectra obtained with the FEROS Spectrograph at the 1 5m ESO telescope The metallicities are in the range 0 15 < [Fe/H] < 0 5, 3 of them m common with Pompera et al. (2002) Geneva. photometry, astrometric data from Hipparcos, and radial velocities from CORAVEL are available for these stars The peculiar kinematics suggests the thin disk close to the bulge as the probable birthplace of these stars (Grenon 1999) From Hipparcos data, it appears that the turnoff of this population indicates an age of 10-11 Gyr (Grenon 1999) Detailed analysis of the Sample stars is culled out Lithium abundances of these stars were derived, and their behaviour with effective temperature is shown. (AU) | |
| Processo FAPESP: | 98/10138-8 - Espectroscopia de média e alta resolução: abundâncias químicas e populações estelares |
| Beneficiário: | Beatriz Leonor Silveira Barbuy |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |