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A spectroscopic survey of thick disc stars outside the solar neighbourhood
G. Kordopatis, A. Recio-Blanco, P. de Laverny +7
We performed a spectroscopic survey of nearly 700 stars probing the galactic thick disc far from the solar neighbourhood towards the galactic coordinates (l~277, b~47). The derived…
Automatic stellar spectra parameterisation in the IR CaII triplet region
G. Kordopatis, A. Recio-Blanco, P. de Laverny +5
(Abridged) Galactic archaeology aims to determine the evolution of the Galaxy from the chemical and kinematical properties of its stars. The analysis of current large spectroscopic…
The First Fluorine Abundance Determinations in Extragalactic AGB Carbon Stars
C. Abia, K. Cunha, S. Cristallo +5
Fluorine (19F) abundances (or upper limits) are derived in six extragalactic AGB carbon stars from the HF(1-0) R9 line at 2.3358 mu in high resolution spectra. The stars belong to…
Lithium abundances and extra mixing processes in evolved stars of M67
B. L. Canto Martins, A. Lèbre, A. Palacios +5
Aims. We present a spectroscopic analysis of a sample of evolved stars in M67 (turn-off, subgiant and giant stars) in order to bring observational constraints to evolutionary model…