{
  "bibcode": "2010GCN.10439....1K",
  "body": "T. Kruehler (MPE), A. Nicuesa (Tautenburg Obs.), S. Klose (Tautenburg\nObs.), J. Greiner and P. Afonso (both MPE Garching) report on behalf of\nthe GROND team:\n\nWe observed the field of GRB 100219A (Swift trigger #412982; Rowlinson et\nal., GCN #10430) simultaneously in g'r'i'z'JHK with GROND (Greiner et al.\n2008, PASP 120, 405) mounted at the 2.2 m MPI/ESO telescope at LaSilla\nObservatory (Chile).\n\nObservations started on 20 February 2010 at 00:30 UT, 8.7 hours after the\nGRB trigger.\n\nInside the XRT error circle (Evans et al., GCN #10437), we detect the\nsource mentioned in Jakobsson et al. GCN #10438, spatially separated by 3\"\nfrom the object mentioned in Holland et al. GCN#10432 and Bloom & Nugent\nGCN #10433.\n\nThe object inside the XRT error circle is well detected in the r' band and\nredder, but not in g'. Preliminary photometry yields an AB magnitude of\ni'=21.5 calibrated against the GROND zeropoint at 9.0 hours after the\ntrigger. At the moment no statement about variability can be made.\nHowever, if this is the afterglow of GRB 100219A, its colors indicate a\nrelatively high redshift event (z around 4.5).",
  "circularId": 10439,
  "createdOn": 1266634391000,
  "email": "kruehler@mpe.mpg.de",
  "subject": "GRB 100219A: GROND observations",
  "submitter": "Thomas Kruehler at MPE/MPI  <kruehler@mpe.mpg.de>",
  "eventId": "GRB 100219A"
}