{
  "bibcode": "2009GCN..8888....1K",
  "body": "T. Kruehler and J.Greiner (both MPE Garching) report on behalf of the\nGROND team:\n\nWe observed the field of GRB 090205 (Swift trigger 342121, M. Perri et\nal.,GCN #8884) simultaneously in g'r'i'z'JHK with GROND mounted at the\n2.2m ESO/MPI telescope at La Silla Observatory (Chile).\n\nObservations started on 03 Feb. 2009 at 05:25 UT, 6.33 h after the burst.\n\nThe object reported by D'Avanzo et al. (GCN #8887) is very well detected\nin the i' band and redder, marginally in r' and not in g'. A preliminary\ni' band magnitude is 20.7 +- 0.2 roughly 7 hours after the burst.\nInterpreting the large r'-i' color and the g' band non detection as\nLyman-alpha absorption in the GRB host, we derive a photometric redshift\nof 4.7 +- 0.3. This redshift estimate has been obtained using hyperZ\n(Bolzonella et al. 2000). We caution that this is based on a preliminary\ncalibration.\n\nNo statement about variability can be made at this point.\n\n[GCN OPS NOTE(06feb09): Per author's request, date and time in the sentence\nin the second paragraph were changed from \"03 Feb\" to \"06 Feb\"\nand from \"05:25\" to \"05:23\".]",
  "circularId": 8888,
  "createdOn": 1233905213000,
  "email": "kruehler@mpe.mpg.de",
  "subject": "GRB 090205: GROND observations and photometric redshift estimate",
  "submitter": "Thomas Kruehler at MPE/MPI  <kruehler@mpe.mpg.de>",
  "eventId": "GRB 090205"
}