{
  "bibcode": "2009GCN..9518....1C",
  "body": "S. B. Cenko, D. A. Perley (UC Berkeley), V. Junkkarinen, M. Burbidge (UC\nSan Diego), and K. Miller (UCO Lick Observatory) report on behalf of a\nlarger collaboration:\n\nWe have obtained a spectrum of the afterglow (GCNs 9512, 9513, 9514, 9515)\nof GRB 090618 with the KAST spectrograph on the 3-m Shane telescope at\nLick Observatory.  Observations began at 08:48 UT on 18 June 2009,\napproximately 20 minutes after the burst.  On the blue channel (using the\n830/3460 grism, providing wavelength coverage from 3200 - 4400 A), we\ndetect a number of strong absorption features that we identify as Mg II,\nMg I, and Fe II at a common redshift of z = 0.54.  We believe this likely\nto be the redshift of the GRB, as the lack of Lyman-alpha absorption\nlimits the GRB host to lie at z <~ 1.6.\n\nFurther analysis is in progress.",
  "circularId": 9518,
  "createdOn": 1245328632000,
  "email": "cenko@srl.caltech.edu",
  "subject": "GRB 090618: Lick/KAST Spectroscopy",
  "submitter": "S. Bradley Cenko at Caltech  <cenko@srl.caltech.edu>",
  "eventId": "GRB 090618"
}