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Sulphur abundance in Galactic stars
E. Caffau, P. Bonifacio, R. Faraggiana +3
We investigate sulphur abundance in 74 Galactic stars by using high resolution spectra obtained at ESO VLT and NTT telescopes. For the first time the abundances are derived, where…
Li in NGC 6752 and the formation of globular clusters
L. Pasquini, P. Bonifacio, P. Molaro +5
Li abundances for 9 Turnoff (TO) stars of the intermediate metallicity cluster ([Fe/H]=-1.4) NGC6752 are presented. The cluster is known to show abundance anomalies and anticorrela…
Chemical Abundances in the Secondary Star of the Neutron Star Binary Centaurus X-4
Jonay I. González Hernández, Rafael Rebolo, Garik Israelian +4
Using a high resolution spectrum of the secondary star in the neutron star binary {Cen X-4}, we have derived the stellar parameters and veiling caused by the accretion disk in a co…
Sulphur abundances in Terzan 7
E. Caffau, P. Bonifacio, R. Faraggiana +1
We present here the first measurements of sulphur abundances in extragalactic stars. We make use of high resolution spectra, obtained with UVES at the ESO 8.2 m Kueyen telescope, o…
A search for Interstellar absorptions towards Sgr dSph
S. Monai, P. Bonifacio, L. Sbordone
We searched for Na I D1,D2 interstellar absorption lines towards 12 giant stars of the Sgr dwarf spheroidal and 3 stars of the associated globular cluster Terzan 7, observed at hig…