{
  "bibcode": "2006GCN..4703....1A",
  "body": "K. Aoki, T. Hattori (Subaru Telescope, NAOJ), \nK. S. Kawabata (Hiroshima University), and N. Kawai (Tokyo Tech)\nreport on behalf of the Subaru GRB team:\n\n\"We have obtained the optical spectra of the afterglow of GRB060206\n(Morris et al., GCN 4682) with FOCAS attached to the Subaru 8.2 m\nTelescope on Mauna Kea.\n\nWe have taken the spectra covering wavelength regions of 5000-10000 A\nat Feb 6.5 (UT) with a total exposure time of 4 hours.  The spectral\nresolutions were about R=500-1000.  The optical spectra clearly show\nrich absorption lines, with which we confirm the redshift of 4.05\n(Fynbo et al. GCN 4692).  We have detected C IV 1550, Fe II 1608, and\nAl II 1670 in addition to Si II, Si II*, O I, C II, and Si IV reported\nin GCN 4692.  Besides the z=4.05 systems, we have found the z=2.26\nand z=1.48 systems which show Mg II 2800 and Fe II absorption lines.\"",
  "circularId": 4703,
  "createdOn": 1139295905000,
  "email": "nkawai@hp.phys.titech.ac.jp",
  "subject": "GRB 060206: Subaru/FOCAS optical spectroscopy",
  "submitter": "Nobuyuki Kawai at Tokyo Tech  <nkawai@hp.phys.titech.ac.jp>",
  "eventId": "GRB 060206"
}