TITLE: GCN CIRCULAR NUMBER: 15802 SUBJECT: GRB 140206A: TNG redshift confirmation DATE: 14/02/06 22:52:54 GMT FROM: Valerio D'Elia at ASDC V. D'Elia (INAF/OAR & ASI/ASDC), P. D'Avanzo, S. Covino, A. Melandri (INAF-OAB), S. D. Vergani (CNRS/GEPI), L. Di Fabrizio (INAF/TNG) report on behalf of the CIBO collaboration: We report further observations of the field of GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785) with the Telescopio Nazionale Galileo (TNG) equipped with DOLORES. We obtained a spectrum of the optical source reported in D'Avanzo et al. (GCN Circ. 15799), with a total exposure of 1800 s, using the grism LR_B covering the wavelength range 3000 - 8000 AA. The observation started at 2014-02-06T19:53:07, i.e., ~12.6 hrs after the GRB. We detect several absorption lines which we interpret as due to Ly-alpha, NV, Si II, C II, SiIV, C IV, Al II, AlII and Fe II at a common redshift of 2.74. In addition, we also detect at the same redshift fine structure lines from excited levels of SiII and FeII, confirming that this is the redshift of the GRB host galaxy. Our result is in perfect agreement with the reported value by Malesani et al. (GCN 15800) Finally, we also detect a strong intervening Ly-alpha absorber at z~2.32 ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.