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The X-shooter Spectral Library (XSL) is an empirical stellar library atmedium spectral resolution covering the wavelength range from 3000 \AA to 24800 \AA. This library aims to provide a benchmark for stellar populationstudies. In this work, we present a uniform set of stellar atmosphericparameters, effective temperatures, surface gravities, and iron abundances for754 spectra of 616 XSL stars. We used the full-spectrum fitting package ULySSwith the empirical MILES library as reference to fit the ultraviolet-blue (UVB)and visible (VIS) spectra. We tested the internal consistency and we comparedour results with compilations from the literature. The stars cover a range ofeffective temperature 2900 < Teff < 38 000 K, surface gravity 0 < log g < 5.7,and iron abundance -2.5 < [Fe/H] < +1.0, with a couple of stars extending downto [Fe/H] = -3.9. The precisions of the measurements for the G- and K-typestars are 0.9%, 0.14, and 0.06 in Teff, log g, and [Fe/H], respectively. Forthe cool giants with log g < 1, the precisions are 2.1%, 0.21, and 0.22, andfor the other cool stars these values are 1%, 0.14, and 0.10. For the hotterstars (Teff > 6500 K), these values are 2.6%, 0.20, and 0.10 for the threeparameters.

Stellar atmospheric parameters for 754 spectra from the X-shooter Spectral Library