{
  "bibcode": "2003GCN..1897....1C",
  "body": "R. Chornock and A. V. Filippenko (UC Berkeley) report:\n\nWe obtained a pair of spectra (2 x 1000 s) of the optical afterglow (GCN\n1879) of GRB 030226 (GCN 1888) using the Low Resolution Imaging\nSpectrometer (resolution ~ 6 angstroms, spectral range 3150-10000\nangstroms) on Keck I.  We see the three previously noted absorption\nsystems, at redshifts 1.044, 1.962, and 1.986 (GCNs 1882, 1884, 1886, and\n1889). The higher redshift absorbers have many lines of common\ninterstellar species.  In addition, we note a broad absorption system with\nmultiple components from 3600 and 3640 angstroms.  We identify these as\nthe Lyman-alpha absorptions of the two high-redshift systems.  Blueward of\nthis complex, the continuum has many absorption lines, which we identify\nas the onset of the Lyman-alpha forest.  Therefore, we conclude that the\nhighest redshift absorption system is at the redshift of the GRB.",
  "circularId": 1897,
  "createdOn": 1046351292000,
  "email": "chornock@astro.berkeley.edu",
  "subject": "GRB 030226 spectroscopy",
  "submitter": "Ryan Chornock at UC Berkeley  <chornock@astro.berkeley.edu>",
  "eventId": "GRB 030226"
}