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GeMS MCAO observations of the Galactic globular cluster NGC 2808: the absolute age
Davide Massari, G. Fiorentino, A. McConnachie +7
Globular clusters are the oldest stellar systems in the Milky Way and probe the early epoch of the Galaxy formation. However, the uncertainties on their absolute age are still too…
Carbon and nitrogen abundances of individual stars in the Sculptor dwarf spheroidal galaxy
C. Lardo, G. Battaglia, E. Pancino +7
We present [C/Fe] and [N/Fe] abundance ratios and CH(λ4300) and S(λ3883) index measurements for 94 red giant branch (RGB) stars in the Sculptor dwarf spheroidal galaxy from VLT/VIM…
Inclusion of Horizontal Branch stars in the derivation of star formation histories of dwarf galaxies: the Carina dSph
Alessandro Savino, Maurizio Salaris, Eline Tolstoy
We present a detailed analysis of the Horizontal Branch of the Carina Dwarf Spheroidal Galaxy by means of synthetic modelling techniques, taking consistently into account the star…
The early days of the Sculptor dwarf spheroidal galaxy
P. Jablonka, P. North, L. Mashonkina +11
We present the high resolution spectroscopic study of five -3.9<=[Fe/H]<=-2.5 stars in the Local Group dwarf spheroidal, Sculptor, thereby doubling the number of stars with compara…
Carbon-enhanced metal-poor stars in dwarf galaxies
Stefania Salvadori, Asa Skuladottir, Eline Tolstoy
We investigate the frequency and origin of carbon-enhanced metal-poor (CEMP) stars in Local Group dwarf galaxies by means of a statistical, data-calibrated cosmological model for t…
Sulphur in the Sculptor dwarf spheroidal galaxy - Including NLTE corrections
Asa Skuladottir, Sergei M. Andrievsky, Eline Tolstoy +4
In Galactic halo stars, sulphur has been shown to behave like other -elements, but until now, no comprehensive studies have been done on this element in stars of other galaxies.…