LUCCHESI , R.

Epidemiological studies have demonstrated that skin tumors are nowadays more frequent than in the past, especially in young people. One of the most important risk factor is represented by the type of skin pigmentation; fair-skinned people are, in fact, the most affected subjects. Another important role is played by frequent overexposure to U.V....

We present our analysis of VLT/UVES and X-shooter observations of six very metal-poor stars, including four stars at [Fe/H] ≈ −3 in the Fornax and Carina dwarf spheroidal (dSph) galaxies. To date, this metallicity range in these two galaxies has not yet been investigated fully, or at all in some cases. The chemical abundances of 25 elements are...

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We present the high-resolution spectroscopic analysis of two new extremely metal-poor stars (EMPS) candidates in the dwarf spheroidal galaxy Sextans. These targets were pre-selected from medium resolution spectra centered around the Ca II triplet in the near-infrared and followed-up at higher resolution with VLT/UVES. We confirm their low...