Lithium abundances in Bulge-like SMR stars

We analyze a sample of 21 super-metal-rich (SMR) stars, using high-resolution échelle 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 in common with Pompéia et al. (2002). Geneva photometry, astrometric d...

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Bibliographic Details
Published in:Proceedings of the International Astronomical Union 2009-11, Vol.5 (S268), p.325-326
Main Authors: Barbuy, Beatriz, Trevisan, M., Gustafsson, B., Eriksson, K., Grenon, M., Pompéia, L.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics
Chemical elements
Contributed Papers
Lithium
Spectrum analysis
Star & galaxy formation
Stars & galaxies
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Summary:We analyze a sample of 21 super-metal-rich (SMR) stars, using high-resolution échelle 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 in common with Pompéia 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 carried out. Lithium abundances of these stars were derived, and their behaviour with effective temperature is shown.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921310004308