Title of article :
Lithium abundances in Bulge-like SMR stars
Author/Authors :
Beatriz Barbuy، نويسنده , , M. Trevisan، نويسنده , , B. Gustafsson، نويسنده , , K. Eriksson، نويسنده , , M. Grenon ، نويسنده , , B. Gustafsson and L. Pompeia، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
2
From page :
325
To page :
326
Abstract :
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 in common with Pompeia 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.
Keywords :
stars: abundances , Formation , Galaxy: formation
Journal title :
Proceedings of the International Astronomical Union
Serial Year :
2009
Journal title :
Proceedings of the International Astronomical Union
Record number :
675133
Link To Document :
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