Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-01-29
Astronomy and Astrophysics
Astrophysics
9 pages, 7 figures
Scientific paper
10.1086/339742
Li abundances are derived for a sample of bulgelike stars with isochronal ages of 10-11 Gyr. These stars have orbits with pericentric distances, Rp, as small as 2-3 kpc and Zmax < 1 kpc. The sample comprises G and K dwarf stars in the metallicity range -0.80<[Fe/H]< +0.40. Few data of Li abundances in old turn-off stars (> 4.5 Gyr) within the present metallicity range are available. M67 (4.7 Gyr) and NGC 188 (6 Gyr) are the oldest studied metal-rich open clusters with late-type stars. Li abundances have also been studied for few samples of old metal-rich field stars. In the present work a high dispersion in Li abundances is found for bulgelike stars for all the metallicity range, comparable with values in M67. The role of metallicity and age on a Li depletion pattern is discussed. The possible connection between Li depletion and oxygen abundance due to atmospheric opacity effects is investigated.
Barbuy Beatriz
Castilho Bruno
Grenon Michel
Pompéia Luciana
No associations
LandOfFree
Detailed Analysis of Nearby Bulgelike Dwarf Stars II. Lithium Abundances does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Detailed Analysis of Nearby Bulgelike Dwarf Stars II. Lithium Abundances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detailed Analysis of Nearby Bulgelike Dwarf Stars II. Lithium Abundances will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-627122