{
  "bibcode": "2009GCN..9409....1T",
  "body": "A. J. Levan (Univ. Warwick), P. Jakobsson (U. Iceland), C. C. Thoene\n(INAF/OAB), P. D'Avanzo (U.  Bicocca & INAF/OAB), A. De Cia (U. Iceland),\nJ. P. U. Fynbo, J. Hjorth, D. Malesani (DARK/NBI), D. Fugazza (INAF/OAB),\nN. R. Tanvir (U. Leicester) report on behalf of a larger collaboration:\n\nUsing FORS2 on the ESO Very Large Telescope, we have obtained \nlow-resolution spectra (3 x 30 min) of the optical afterglow of GRB \n090519 (Perri et al., GCN 9400; Thoene et al., GCN 9403) with the grism \n300V, covering the wavelength range 3500-9200 AA. In the acquisition \nimage  the afterglow has a magnitude of R ~ 23.5. The first spectrum \nwas  taken approximately 4 hours after the burst.\n\nIn a preliminary analysis we detect a break around 4400 AA and strong \nabsorption features around 5000 AA and 5900 AA. We interpret these \nfeatures as the Lyman limit, Lyman-beta and Lyman-alpha at a redshift of \nz = 3.85. This is in agreement with the photometric redshift reported by \nRossi et al. (GCN 9408).\n\nWe thank the Paranal staff for excellent support, in particular Gianni \nMarconi, Kieran O'Brien and Patricia Guajardo.\n\n[GCN OPS NOTE(20may09): Per the original first-author's (CCT) request,\nthe author list was changed.]",
  "circularId": 9409,
  "createdOn": 1242809657000,
  "email": "paolo.davanzo@brera.inaf.it",
  "subject": "GRB 090519: VLT spectroscopic redshift",
  "submitter": "Paolo D'Avanzo at INAF-OAB  <paolo.davanzo@brera.inaf.it>",
  "eventId": "GRB 090519"
}