TITLE: GCN CIRCULAR NUMBER: 12542 SUBJECT: GRB 111107A: VLT/X-shooter spectroscopy DATE: 11/11/07 16:32:22 GMT FROM: Paolo D'Avanzo at INAF-OAB P. D'Avanzo (INAF-OAB), S. D. Vergani (INAF-OAB), H. Flores (GEPI/Obs. de Paris), D. Malesani, D. Watson (DARK/NBI), A. J. Levan (Univ. Warwick), J. P. U. Fynbo (DARK/NBI), report on behalf of a larger collaboration: We observed the optical afterglow of GRB 111107A (Siegel et al., GCN 12534; LaCluyze et al., GCN 12535; Kruehler et al., GCN 12536; Kuin et al., GCN 12540), using the X-shooter spectrograph mounted on the ESO-VLT. Observations started on 2011 November 7.254 UT (5.26 hr after the GRB), with a total exposure time of 1.3 hr, covering the wavelength range 3000-25000 AA. In the spectra (reduced with archival calibration files) we detect several absorption lines, like Ly-alpha, CIV, FeII and MgII, and the correspondent Lyman limit absorption, at a redshift consistent with that reported by Chornock et al. (GCN 12537). We also note the presence of a strong intervening Mg II system at z = 1.998. We acknowledge excellent support from the observing staff in Paranal, in particular Valentin Ivanov, Petr Kabath, Jonathan Smoker, Claudia Cid, Sergio Vera, Christophe Martayan and Roger Wesson. [GCN OPS NOTE(07nov11): The afilliation of DM and DW was changed.]