All Tables

Table 1: Log of the Swift observations analysed in this paper.
Table 2: X-ray position (equatorial and Galactic), presence of an IR counterpart and reddshift of the 12 sources studied with Swift/XRT.
Table 3: IR, Optical and UV apparent magnitudes obtained from the literature and online catalogues, and, when available, from the analysis of the UVOT data. Upper limits are given at the 5- $\sigma$ level.
Table 4: Spectral parameters of the 12 sources studied with Swift/XRT.
Table 5: Best XRT positions of serendipitous sources found in this study.