{
  "bibcode": "2005GCN..3971....1P",
  "body": "J. X. Prochaska (UCO-Lick/UCSC), R. J. Foley (UCB), H.-W. Chen\n(U Chichago), J. S. Bloom (UCB), K. Hurley (SSL/UCB), M. Cooper (UCB),\nR. Guhathakurta (UCO-Lick/UCSC), W. Li (UCB) report on behalf of the\nGRAASP collaboration:\n\n\"We have obtained Keck/DEIMOS spectra of the afterglow of 050908  \nstarting\nat 20050908.56 UT.  The 1200/7500 grating data has a resolution of ~0.33\nAng and S/N~10 per resolution element covering wavelengths 6300-9000  \nAng.\nWe refine the GRB host redshift to be z=3.3440 +/- 0.0001 based on the\nstrongest component of the CIV profile.\n\nThe DEIMOS spectrum overlaps with GMOS spectrum between 6330 and 7950 A,\nand does not confirm the emission feature originally detected in the  \nGMOS\ndata at 7273 A.  We therefore conclude that the intervening system at\nz=2.81 reported in GCN 3949 is not likely to be real.\n\nAdopting log N(HI)=19 and ignoring ionization corrections, the\nnon-detections of CII 1334, OI 1302 and AlII 1670 imply a metallicity of\nless than 1/100 solar.  Ionization corrections could imply even 10x  \nlower\nvalues.\n\nIn contrast to the low-ion transitions, the host shows very strong SiIV\nand CIV absorption spanning ~500 km/s.\"\n\nThis message may be cited.",
  "circularId": 3971,
  "createdOn": 1126546773000,
  "email": "xavier@ucolick.org",
  "subject": "GRB 050908: DEIMOS spectrum and further analysis",
  "submitter": "Jason Prochaska at UCO/Lick Obs  <xavier@ucolick.org>",
  "eventId": "GRB 050908"
}