Chemical abundances in Terzan 7 from UVES spectra

L. Sbordone (1 , 2) , P. Bonifacio (3) , G. Marconi (1 , 4) , R. Buonanno (2) ((1) ESO Chile , (2) Universita' di Roma Tor Vergata , (3) Osservatorio Astronomico di Trieste

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(4) Osservatorio Astronomico di Roma)

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classification 🌌 astro-ph

keywords abundancesalphachemicaldsphmeanterzanabundanceassociated

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We present chemical abundances for Mg, Si, Ca and Fe for three red giants in the sparse globular cluster Terzan 7, physically associated to the Sagittarius Dwarf Spheroidal Galaxy (Sgr dSph), which is presently being tidally disrupted by the Milky Way. The data has been obtained with VLT-UVES and show a mean [Fe/H]=-0.57, with solar alpha content, mean [alpha/Fe]=-0.03. This enforces Ter 7's membership to the Sgr dSph system, which shows a similar pattern of abundance.

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Chemical abundances in Terzan 7 from UVES spectra

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