TITLE: GCN CIRCULAR NUMBER: 15250 SUBJECT: GRB 130925A: VLT/X-shooter redshift DATE: 13/09/25 11:07:01 GMT FROM: Sylvio Klose at TLS Tautenburg V. Sudilovsky, D.A. Kann, P. Schady (all MPE Garching), S. Klose (TLS Tautenburg), J. Greiner (MPE Garching), and T. Kruehler (ESO) report: We observed the optical/NIR afterglow (Sudilovsky et al., GCN 15247) of GRB 130925A (Swift trigger 571830, Lien et al., GCN 15246) using ESO/VLT UT2 equipped with the X-shooter spectrograph. Observations started at 07:42 UT on 2013-09-25, about 3.5 hr after the Swift trigger. A total exposure of 1.6 hr was obtained, covering the spectral range from 3000 to 20500 AA. In the spectrum we detect emission lines, which we interpret as being due to [O II](3726,3729), H_beta, [O III](4959), [O III](5007) and H_alpha at a common redshift of z = 0.35, in agreement with Vreeswijk et al. (GCN 15249). We thank the Paranal staff for excellent support, in particular Linda Schmidtobreick, Jonathan Smoker and Patricia.