{
  "bibcode": "2011GCN.11519....1X",
  "body": "D. Xu (Weizmann Inst.), D. Malesani, J.P.U. Fynbo, J. Hjorth\n(DARK/NBI), P. Jakobsson (U. Iceland), T. Augusteijn (NOT), report on\nbehalf of a larger collaboration:\n\nWe imaged the field of GRB 101225A (Racusin et al., GCN 11493) at the\nNordic Optical Telescope (NOT) equipped with ALFOSC. We obtained 6x600\ns R-band images with a good seeing ~0.7\" and little cloud cover.\nObservations started at 20:55:25 UT on 2011 Jan 4 (i.e., 10.1 days\nafter the BAT trigger).\n\nThe optical counterpart of the burst (Xu et al., GCN 11495) has faded\nfurther and it is detected in the stacked image with R = 24.1+/-0.1,\ncalibrated against the USNO-B1 star #1345-0000324. The object is now\nsignificantly extended along the northwest-southeast direction,\nindicating a significant contribution from the underlying host galaxy.\n\nFurther observations are encouraged, especially in the NIR.",
  "circularId": 11519,
  "createdOn": 1294235093000,
  "email": "dong@astro.ku.dk",
  "subject": "GRB 101225A: Host galaxy",
  "submitter": "Dong Xu at Weizmann Inst  <dong@astro.ku.dk>",
  "eventId": "GRB 101225A"
}