{
  "bibcode": "2014GCN.17234....1G",
  "body": "J. Gorosabel (UPV-EHU, IAA-CSIC), A. de Ugarte Postigo (IAA-CSIC,\nDARK/NBI), C.C. Thoene (IAA-CSIC),  N. Tanvir (U. Leicester), J.P.U. Fynbo\n(DARK/NBI), D. Garc�a-Alvare (GTC), \"A. Perez-Romero (GTC)\nreport on behalf of a larger collaboration:\n\nWe observed the afterglow of GRB 141225A (D'Avanzo et al. GCN 17229) with\nOSIRIS at the 10.4m GTC. Observations began at 00:25:25 UT (~1.4 hours\npost burst). Four 600s spectra were taken with the R1000B grism going from\n3750 to 7800 AA. A first analisys based on archival arc lamps reveals\nabsorption features of FeII and MgII at a preliminary redshift of z=0.915.\n\n[GCN OPS NOTE(27dec14): Pera author's request, D.G was changed to D.G-A\nand A.P-R was added.]",
  "circularId": 17234,
  "createdOn": 1419563318000,
  "email": "jgu@iaa.es",
  "subject": "GRB 141225A: Redshift from OSIRIS at the 10.4m GTC",
  "submitter": "Javier Gorosabel at IAA-CSIC  <jgu@iaa.es>",
  "eventId": "GRB 141225A"
}